Re: [pinhole-discussion] F-stop question

2003-02-22 Thread Bill Erickson
F-stop questionCalculate the area of your aperture (pi x radius squared). Calculate the area of an f22 aperture at 50mm (50mm divided by 22 =diameter. Area =(1/2diameter)(1/2diameter) x pi. Divide the area of your aperture into the area of f22. The result equals 40. Multiply f22 metered exposure

Re: [pinhole-discussion] D'Arcy Power article on-line

2003-02-21 Thread Bill Erickson
://idea.uwosh.edu/nick/pinholephoto.htm and finding the link there. Then right click on it, and click on save target as. That will save it to your hard drive, and you should be able to open it with acrobat reader from there. John - Original Message - From: Bill Erickson erick...@hickorytech.net

Re: [pinhole-discussion] D'Arcy Power article on-line

2003-02-21 Thread Bill Erickson
I can't get the document to open. - Original Message - From: Nick Dvoracek dvora...@vaxa.cis.uwosh.edu To: pinhole-discussion@p at ??? Sent: Thursday, February 20, 2003 4:45 PM Subject: [pinhole-discussion] D'Arcy Power article on-line A while ago there was a thread about an

Re: [pinhole-discussion] new but not a newbie , kinda but not really

2002-06-04 Thread Bill Erickson
Try the Black Cat thing. I can't remember the rest of the name. You can find it under Black cat at pinhole resource and other camera places. It's not a meter but it will translate from f22 to the higher Fstops. It's a $20 carboard dial with a long list of exposure by condition suggestions too.

Re: [pinhole-discussion] Covering Power of Pinholes

2002-05-31 Thread Bill Erickson
Covering Power of PinholesSimple answer is that covering power generally is 1 1/2 times the focal length either side of the axis. Erics book has both complex and simple formulae. The simple formula is the diameter of the aperture in thosandths of an inch (for example 0.010= 10) divided by 55

Re: [pinhole-discussion] Cutting oatmeal box

2002-05-24 Thread Bill Erickson
Any power tool will shred the cardboard. I'd use either an xacto knife or a single edger razor blade. - Original Message - From: Chris Harris cpharrisph...@hotmail.com To: pinhole-discussion@p at ??? Sent: Thursday, May 23, 2002 7:58 PM Subject: [pinhole-discussion] Cutting oatmeal box

[pinhole-discussion] how to say It's just a camera in Italian.

2002-04-24 Thread Bill Erickson
I'm about to leave for two weeks of pinholing in Italy. I feel rather self conscious about digging in a changing bag and putting out suspicious looking cannisters on the Ponte Veccio. Can some one tell me how to say It's just an home made camera, or I am harmless, though eccentric in Italian?

Re: Thanks Re: [pinhole-discussion] best viewfinders for close-up work

2002-04-20 Thread Bill Erickson
If the essence of a child is movement, then a pinhole is the ideal method to desribe it. My experience is that you can captue quiet movement easily enough in bright sun. Anything moving throughout an exposure of more than ten seconds will simply disappear. I enjoy playing with overnight exposures,

Re: [pinhole-discussion] getting somewhere (and a new question)

2002-04-16 Thread Bill Erickson
I find that if you leave the dark slide in, it tends to wobble or catch the breeze and move the camera. I pull it out and then throw my jacket or a black plastic bag over the back of the camera. that's what dark cloths are for in large format lens photography. - Original Message - From:

Re: [pinhole-discussion] pinhole coverage issue

2002-04-16 Thread Bill Erickson
A 0.44 mm aperture placed 145mm from the film will cover about 500 mm. The formulas is that the coverage equals about 1 1/2 times the focal length either side of center. Focal length is just the distance from the pinhole to the film. It's really a misnomer because nothing focusses, it's just the

Re: [pinhole-discussion] Source for 8x10 film holders

2002-04-08 Thread Bill Erickson
I've seen a number of wooden ones on Ebay. - Original Message - From: Greg Newberry grnewbe...@qwest.net To: Pinhole-Discussion pinhole-discussion@p at ??? Sent: Monday, April 08, 2002 8:10 PM Subject: [pinhole-discussion] Source for 8x10 film holders Hi, I want to buy a few used

[pinhole-discussion] scanners

2002-03-21 Thread Bill Erickson
This seems like an opportune time for a variation on the scaner topic. I have negative scanners but my flatbed scanner is older and not too adequate. Any advice on choice of flatbed scanner for prints, not negs?

Re: [pinhole-discussion] Epson Perfection 1250 Photo Flatbed Scanner

2002-03-21 Thread Bill Erickson
Are these good scanners for opaque material or are they just attractive because they offer the opportunity to scan negatives? - Original Message - From: dalf...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, March 21, 2002 12:08 AM Subject: Re: [pinhole-discussion] Epson

Re: [pinhole-discussion] Pinhole Calculations

2002-03-11 Thread Bill Erickson
Well, actually, the angle of view depends on there being a flat film plane interposed on the hemispheric optimal image distance. The average 'angle of view' is 1.5FL either side of the axis. Light falloff is a function of the different distance from the pinhole at different points on the flat film

Re: [pinhole-discussion] Zero 6x9 pinhole

2002-03-10 Thread Bill Erickson
There are at least two different formulas for the pinhole to film plane distance question. There are lots of different tables already calculated that have been referred to before. See Eric Renner's book for a long detailed description. Also, since you can be off from the right distance by a factor

Re: [pinhole-discussion] Photo-flo

2002-03-06 Thread Bill Erickson
Don't know about the photo-flo, but I have dried film in all sorts of configurations. One time I left a roll of film hanging for ayear to see how much dust it accumulated (surprisingly little, probaby because it was vertical and in a protected corner with no airflow.). If the film is in an area

Re: [pinhole-discussion] Favorite Cameras?

2002-03-04 Thread Bill Erickson
The first rule of pinhole is Play!. Try what you said and see if you like it. My impression is that a lot of the pinholers here use converted lens cameras or the Zero series. Next favorite is the curved film plane ones, with the oatmeal carton being the prototype. Figuring out what you yourself

Re: [pinhole-discussion] New photo: Rome double exposure

2002-03-04 Thread Bill Erickson
Very nice. I have played around with double exposures, pinhole and otherwise. I find that including sky in the first exposure tends to eliminate the second exposure appearing there. - Original Message - From: Mark Interrante m...@interwalk.com To: pinhole-discussion@p at ??? Sent:

Re: [pinhole-discussion] Hand made darkslides

2002-03-03 Thread Bill Erickson
Glorieux - Original Message - From: Bill Erickson erick...@hickorytech.net To: pinhole-discussion@p at ??? Sent: Sunday, March 03, 2002 8:55 AM Subject: Re: [pinhole-discussion] Hand made darkslides I've tried it, can't say with much success. I was making a film holder

Re: [pinhole-discussion] Hand made darkslides

2002-03-03 Thread Bill Erickson
I've tried it, can't say with much success. I was making a film holder for a daguerreotype plate by laminating succesive layers of model airplane plywood, using one of the thinner pieces for the dark slide. it worked OK for the dag because the plate is so slow', but for film or photographic

Re: [pinhole-discussion] question and website

2002-03-01 Thread Bill Erickson
That's some sort of diffraction pattern, I assume from internal reflections. if you figure it out let me know. i made one camera that did the same thing and i could never isolate the source. - Original Message - From: Daniel Donnelly danieldonne...@yahoo.com To: pinhole-discussion@p at

Re: [pinhole-discussion] New Pictures uploaded!

2002-02-25 Thread Bill Erickson
Very nice. I like the kalotype best. I think it's neat to have the whole process be handmade. - Original Message - From: Ingo Guenther ingoguent...@web.de To: pinhole-discussion@p at ??? Sent: Friday, January 25, 2002 6:02 PM Subject: [pinhole-discussion] New Pictures uploaded! Hi

Re: [pinhole-discussion] New image saloon uploaded on behalf of Pete Eckert

2002-02-25 Thread Bill Erickson
Thanks for the response. I was looking at the picture and realizing that one could sense the space by feel, heat, noise and the warmth from sunlight. - Original Message - From: pete eckert peteeck...@mindspring.com To: pinhole-discussion@p at ??? Sent: Monday, February 25, 2002 1:54 PM

Re: [pinhole-discussion] New image saloon uploaded on behalf of Pete Eckert

2002-02-25 Thread Bill Erickson
As ithink about your image, i have a question which I think pertains to our art and is not just ersonal poking around. I have had experience with hearing impaired people, and I have the impression that those who have been deaf since birth and do not experience sound except as a sense of vibration

Re: [pinhole-discussion] New image saloon uploaded on behalf of Pete Eckert

2002-02-24 Thread Bill Erickson
Amazing! - Original Message - From: Steve Wilson steve.wil...@eyeconcur.com To: pinhole-discussion@p at ??? Cc: peteeck...@mindspring.com Sent: Sunday, February 24, 2002 9:26 AM Subject: [pinhole-discussion] New image saloon uploaded on behalf of Pete Eckert A new image, Saloon, has

Re: [pinhole-discussion] Type 55 reciprocity adjustments

2002-02-21 Thread Bill Erickson
All suggestions will work, but just letting it dry and then re-wetting it when you want to clear it worked OK for me. - Original Message - From: dalf...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, February 21, 2002 12:09 AM Subject: Re: [pinhole-discussion] Type 55

Re: [pinhole-discussion] umm (ortho-litho development)

2002-02-21 Thread Bill Erickson
If you use lith developer, you will get only blacks and whites. If you use dektol1:2 you will get some shades of grey. It's easy to try other film or paper developers since you can develop by inspection, just deelop until it stops changing. I think you'll get more pleasing results using Dektol.

Re: [pinhole-discussion] ASA for ortho-litho film (again)

2002-02-20 Thread Bill Erickson
Try 5 or 10. Instead of under or over exposure what you get is more or less black areas. it's alsmost a matter of personal taste. - Original Message - From: ra...@rahji.com To: pinhole-discussion@p at ??? Cc: ra...@rahji.com Sent: Wednesday, February 20, 2002 2:44 PM Subject:

Re: [pinhole-discussion] Type 55 reciprocity adjustments

2002-02-20 Thread Bill Erickson
My memory of my work with type 55 is that the reciprocity corrections used for other film worked fine with type 55. I exposed for negative, not positive, ASA 25. - Original Message - From: Markus Birsfelder b...@freesurf.ch To: pinhole-discussion@p at ??? Sent: Wednesday, February 20,

Re: [pinhole-discussion] 120 slide film?

2002-02-19 Thread Bill Erickson
No. They're bigger and you will need a different, and much more expensive, slide projector. Sorry. - Original Message - From: R Duarte ra...@rahji.com To: pinhole-discussion@p at ??? Sent: Tuesday, February 19, 2002 7:18 PM Subject: [pinhole-discussion] 120 slide film? Hi. Stupid

Re: [pinhole-discussion] Pinhole Planet new cameras

2002-02-17 Thread Bill Erickson
I've seen the prototype and talked to the fellow, but i haven't seen any pictures. It seems to be well thought out. - Original Message - From: Tom Harvey harv...@aracnet.com To: pinhole-discussion@p at ??? Sent: Saturday, February 16, 2002 8:41 PM Subject: [pinhole-discussion] Pinhole

Re: [pinhole-discussion] new AOL tins; limits on wide-angle pinhole?

2002-02-17 Thread Bill Erickson
If the focal distance is 1/3 inch, you could expect a visible image cone of about 1 inch. The rule of thumb is one and a half focal lengths either side of the axis. - Original Message - From: J.E. Patterson pinh...@lightjunkie.org To: pinhole-discussion@p at ??? Sent: Saturday,

Re: [pinhole-discussion] contast

2002-02-14 Thread Bill Erickson
You might be getting some flare from shooting toward the sun. this flattens out contrast. Also maybe some fogging? It is said to be very difficult to boost contrast with Ilford film. try tmax. - Original Message - From: Liav Koren yu257...@yorku.ca To: pinhole-discussion@p at ??? Sent:

Re: [pinhole-discussion] Angle of ligh

2002-02-12 Thread Bill Erickson
Since you brought this up, there are two factors influencing the intensity of light at the film plane, the distance from the pinhole and the angle off axis. As you move off axis of a flat film plane, the distance from the pinhole to the film grows, and the apparent shape of the pinhole changes

Re: [pinhole-discussion] Angle of ligh

2002-02-11 Thread Bill Erickson
When you increase the focal length but leave the negative size the same all you do is decrease the angle of acceptance of the light beam. You sample a smaller portion of the potential image. I can't see how the size of the pinhole would make a difference, except that it casts an optimal potential

Re: [pinhole-discussion] Lull in the conversation

2002-02-10 Thread Bill Erickson
Great image. I'm reminded of some postings here a while ago of trafic and people in times square. I don't care much for zone plate still lifes, but it gives an interesting sort of surrealism to people. - Original Message - From: Mark Interrante m...@interwalk.com To: pinhole-discussion@p

Re: [pinhole-discussion] list is fine (?)

2002-02-09 Thread Bill Erickson
I noticed the lapse also. I think it's happened before on weekends. I thought maybe I'd done something wrong and was being shunned. Nice to know it's not so. - Original Message - From: Ricardo Wildberger Lisboa wildber...@svn.com.br To: pinhole-discussion@p at ??? Sent: Saturday,

[pinhole-discussion] ilfochrome speed etc.

2002-02-06 Thread Bill Erickson
The addresses I wrote only take you to the gallery page. the images are in the 2002 gallery.

[pinhole-discussion] ilfochrome classic speed.

2002-02-06 Thread Bill Erickson
Final report. http://www.???/discussion/upload/ifoout ISO of 1.5 outdoors with 85B filter gives a print maybe just a little overexposed. http://www.???/discussion/upload/ilfoin ISO 3 with tungsten indoors, no filter, gives print just a little underexposed. Indoor color balance is nice.

Re: [pinhole-discussion] speed of Ilfochrome classic.

2002-02-05 Thread Bill Erickson
-discussion@p at ??? Sent: Tuesday, February 05, 2002 8:24 AM Subject: Re: [pinhole-discussion] speed of Ilfochrome classic. --- Bill Erickson erick...@hickorytech.net wrote: Here's my first tries. With a pinhole of known diameter at optimal distance from the paper, ASA 3 will yield

Re: [pinhole-discussion] question on exposure

2002-02-01 Thread Bill Erickson
I'm just beginning to calibrate Ilfochrome classic paper, to determine the effective ASA at various durations of exposure. I'll post the results when I get them. - Original Message - From: Glenn Friedel gfrie...@basetech.com To: pinhole-discussion@p at ??? Sent: Friday, February 01,

[pinhole-discussion] scrambled messages in digest form.

2002-01-28 Thread Bill Erickson
I discover that people who get my messages forwarded in the digest format have been receiving scrambled messages. I've been told that this is because I had been sending in html instead of plain text, and that the digesting program presumably can't read MIME (the name of some program regarding

Re: [pinhole-discussion] Art 21: Ann Hamilton

2002-01-25 Thread Bill Erickson
Mouth-pinhole portraiture! What a wonderful way to de-sensitize students to photographing other people close enough up. - Original Message - From: Lisa Reddig l...@julianrichards.com To: pinhole-discussion@p at ??? Sent: Friday, January 25, 2002 10:19 AM Subject: [pinhole-discussion]

Re: [pinhole-discussion] (no subject)

2002-01-22 Thread Bill Erickson
When the notch is in the upper right corner the emulsion is toward you. - Original Message - From: pete eckert peteeck...@mindspring.com To: pinhole-discussion@p at ??? Sent: Tuesday, January 22, 2002 7:10 PM Subject: [pinhole-discussion] (no subject) I made a 8 x 10 camera to take

Re: [pinhole-discussion] upload

2002-01-22 Thread Bill Erickson
Re: [pinhole-discussion] uploadIs it fortune favors the brave, chance favors only the prepared mind or 'even a blind squirrel will occasionally find a nut? - Original Message - From: Kosinski Family To: pinhole-discussion@p at ??? Sent: Tuesday, January 22, 2002 7:07 AM

Re: [pinhole-discussion] upload

2002-01-22 Thread Bill Erickson
, Bill Erickson at erick...@hickorytech.net wrote: I uploaded the results of an accident: www.???/discussion/upload/gallery2002.php?pic=achagower.jpg http://www.???/discussion/upload/gallery2002.php?pic=achagower.jpg The figures are in a cemetery in the village of Achagower

[pinhole-discussion] upload

2002-01-21 Thread Bill Erickson
I uploaded the results of an accident: www.???/discussion/upload/gallery2002.php?pic=achagower.jpg The figures are in a cemetery in the village of Achagower, in County Mayo, Ireland, but the tombstones are at Kilgeever Abbey, thirty miles south. I was shooting 8x10 Tmax 400 and mistakenly

Re: [pinhole-discussion] Darkroom light

2002-01-20 Thread Bill Erickson
In a darkroom that small you should make some effort to assure adequate ventilation. It's no fun only being able to print until you begin to get sick. - Original Message - From: Dennis Johanson To: pinhole-discussion@p at ??? Sent: Sunday, January 20, 2002 2:03 PM

Re: [pinhole-discussion] Darkroom light

2002-01-20 Thread Bill Erickson
Should be just density. - Original Message - From: Dennis Johanson To: pinhole-discussion@p at ??? Sent: Sunday, January 20, 2002 2:03 PM Subject: [pinhole-discussion] Darkroom light I am planning to make a darkroom out of a rather limited space (floor about 1 by 1,5

Re: [pinhole-discussion] Alexis' debate of how and why.

2002-01-15 Thread Bill Erickson
I'm reminded that when I visited the Sistine Chapel the man in front of me in line was blind, white cane and all. He seemed to be as moved as the rest of us. - Original Message - From: Murray mur...@uptowngallery.org To: pinhole-discussion@p at ??? Sent: Monday, January 14, 2002 2:21

[pinhole-discussion] a new debate

2002-01-13 Thread Bill Erickson
Science or art? Science ensures that is titanium yellow is always titanium yellow. Art makes yellow things. Style or content? As has already been noted, they mate. What is pinhole all about? About involving the operator more in the process, about technical minimalism, about points of view

Re: [pinhole-discussion] Polaroid Pinhole Kits

2002-01-13 Thread Bill Erickson
I tried one pack of the sepia and wasted a lot of it because I underestimated the reciprocitycorrection very badly. It would be a contributiuon for soemone to come up with good reciprocity recommendations for polaroid sepia. - Original Message - From: Louisa M. Kirby To:

Re: [pinhole-discussion] 12 day exposure

2002-01-09 Thread Bill Erickson
And thank you for making MY day. - Original Message - From: cmcbe...@aol.com To: pinhole-discussion@p at ??? Sent: Tuesday, January 08, 2002 8:01 PM Subject: Re: [pinhole-discussion] 12 day exposure http://www.p at

Re: [pinhole-discussion] Multigrade filters

2002-01-07 Thread Bill Erickson
They should work for both neg and positive. My guess is you'll need to experiement to see the effect on the negative. Effect on positive should be as predicted. - Original Message - From: Chris chri...@worldnet.att.net To: pinhole-discussion@p at ??? Sent: Monday, January 07, 2002 4:02

Re: [pinhole-discussion] Dwarf pictures

2002-01-07 Thread Bill Erickson
By gosh, he's got it! I think he's got it! - Original Message - From: Jean-Louis Thiry multim...@wanadoo.fr To: pinhole-discussion@p at ??? Sent: Monday, January 07, 2002 12:40 PM Subject: [pinhole-discussion] Dwarf pictures As it is the first time I'm posting a message, though I

Re: [pinhole-discussion] develop-in-camera, ABS pipe size availability, how much developer?

2002-01-06 Thread Bill Erickson
Seems to me you would also need to protect the pinhole from water, lest you get a meniscus of water there due to surface tension. - Original Message - From: Uptown Gallery gall...@uptowngallery.org To: pinhole-discussion@p at ??? Sent: Saturday, January 05, 2002 11:35 PM Subject:

Re: [pinhole-discussion] Upload

2002-01-05 Thread Bill Erickson
very nice! It's fun to see images where the artist clearly visualized in advance what they wanted to accomplish, and did so. - Original Message - From: Christian Harkness chris.harkn...@eudoramail.com To: pinhole-discussion@p at ??? Sent: Saturday, January 05, 2002 7:32 AM Subject:

Re: [pinhole-discussion] focusing loupe and focusing cloth

2002-01-04 Thread Bill Erickson
Porters, at www.porters.com has good plastic. Not very elegant, though. - Original Message - From: b2myo...@aol.com To: pinhole-discussion@p at ??? Sent: Thursday, January 03, 2002 10:51 PM Subject: Re: [pinhole-discussion] focusing loupe and focusing cloth In a message dated

Re: [pinhole-discussion] 12 day exposure

2002-01-02 Thread Bill Erickson
the shutter leave the camera? cool.. happy new year andy -Original Message- From: pinhole-discussion-admin@p at ??? [mailto:pinhole-discussion-admin@p at ???]On Behalf Of Bill Erickson Sent: Tuesday, January 01, 2002 7:36 PM To: pinhole-discussion@p

[pinhole-discussion] 12 day exposure tech data.

2002-01-01 Thread Bill Erickson
I forgot to add that the negative was 5x7Ilford iso 400 curved in a semicircle to conform to the curve of the optimal image. When it's put right up against the front of the camera it results in nearly a 180 degree angle of view. The curved lines at the sides are the edges of the filter holder

Re: [pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #564 - 8 msgs

2001-12-22 Thread Bill Erickson
, December 22, 2001 11:09 AM Subject: [pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #564 - 8 msgs Subject : Ultra closeup photography. Bill Erickson in replying to Rachel Mallon's questionnaire mentioned ultra closeup pinhole photography. Please tell me what this means. What subject, how

Re: [pinhole-discussion] agfa grade 1 craziness

2001-12-20 Thread Bill Erickson
You get it all the time when loading 35mm or 120 film, when you pull the tape off. I've never seen it cause a problem. - Original Message - From: R Duarte ra...@rahji.com To: pinhole-discussion@p at ??? Sent: Wednesday, December 19, 2001 10:56 PM Subject: [pinhole-discussion] agfa

[pinhole-discussion] followup on very long exposures.

2001-12-18 Thread Bill Erickson
I did an exposure of a scene for which the metered exposure for the pinhole was 4 hours. I exposed it for five days, an aggregate of about 40 hours of peak light time, on Ilford HP5 ASA 400, with standard development in HC 110. There's a usable image but its thin and lacking in detail in the

Re: [pinhole-discussion] Will paper work in 4x5 film holder?

2001-12-18 Thread Bill Erickson
Absolutely. use a fim speed of 5 or6. - Original Message - From: Chris chri...@worldnet.att.net To: pinhole-discussion@p at ??? Sent: Tuesday, December 18, 2001 9:10 AM Subject: [pinhole-discussion] Will paper work in 4x5 film holder? I'm building my first 4x5 pin hole. It's an

Re: [pinhole-discussion] Reciprocity failure with paper

2001-12-16 Thread Bill Erickson
I doubt you'll have much trouble. Correct paper exposure in the darkroom is traditionally a matter of trial and error, or at least repeated trials, anyway. There have been several discussions here about this topic. My impression is that you get some reciprocity effect beginning at maybe a half

Re: [pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #557 - 16 msgs

2001-12-12 Thread Bill Erickson
See eric renners description in his book. - Original Message - From: Daniel Donnelly danieldonne...@yahoo.com To: pinhole-discussion@p at ??? Sent: Wednesday, December 12, 2001 3:51 AM Subject: [pinhole-discussion] Re: Pinhole-Discussion digest, Vol 1 #557 - 16 msgs Has anyone any

Re: [pinhole-discussion] A test of long exposures

2001-12-09 Thread Bill Erickson
I'd be proud to share it. Send me your mailing address. - Original Message - From: b2myo...@aol.com To: pinhole-discussion@p at ??? Sent: Sunday, December 09, 2001 6:19 AM Subject: Re: [pinhole-discussion] A test of long exposures In a message dated 12/8/01 11:38:25 PM,

Re: [pinhole-discussion] A test of long exposures

2001-12-09 Thread Bill Erickson
- Original Message - From: Bill Erickson To: pinhole-discussion@p at ??? Sent: Saturday, December 08, 2001 7:21 PM Subject: [pinhole-discussion] A test of long exposures I uploaded three images which are the result of exposure times arrived at with less than

Re: [pinhole-discussion] A test of long exposures

2001-12-09 Thread Bill Erickson
The camera is a 2 inch focal length with optimal (purchased and focal lenghth calculated) pinhole, just a woden box glued to an old 6x7 rollfilm back. PortraVC 400 film. I find that overnight exposures that go from about a half hour after sunset to a half hour after sunrise give good shadow

Re: [pinhole-discussion] beseler room temperature color chemicals.

2001-12-07 Thread Bill Erickson
and your post reminded me of my earlier years working at room temprature, processing a print for 20 minutes, (EP2 was slower). You might look into other chemicals. I think I saw the Jobo's line of chemicals could also be used at room temprature. Bill Erickson wrote: Ihe arts center where i teach

Re: [pinhole-discussion] strange color with Polaroid color materials

2001-12-06 Thread Bill Erickson
I had the same experience with polaroid color and dcided it wasn't worth it. - Original Message - From: jack duganne duga...@earthlink.net To: pinhole-discussion@p at ??? Sent: Thursday, December 06, 2001 12:07 AM Subject: [pinhole-discussion] strange color with Polaroid color

[pinhole-discussion] A final thought about reciprocity failure with paper negs.

2001-11-30 Thread Bill Erickson
The more I thought about this the more I realized that, with very long exposures, the risk of overexposure is lessened by reciprocity failure, and the longer the exposure, the less the overexposure risk. In essence, it is far easier to fatally underexpose than fatally overexpose, and far more

Re: [pinhole-discussion] reciprocity failure of paper negs.

2001-11-29 Thread Bill Erickson
I get the message. More is better, but don't forget to go to bed. - Original Message - From: Guy Glorieux To: pinhole-discussion@p at ??? Sent: Thursday, November 29, 2001 6:47 AM Subject: Re: [pinhole-discussion] reciprocity failure of paper negs. Bill Erickson

Re: [pinhole-discussion] sheet film instead of photo paper

2001-11-08 Thread Bill Erickson
I've used 4x5,5x7,8x10 without problem. for me the issues were how much could i influence negative contast since I intended to use the negs for contact alternative process prints. Tmax is much the easiest to influence contrast via agitation. don't know anything about xray film. Your task, if you

Re: [pinhole-discussion] digital pinhole cameras

2001-11-04 Thread Bill Erickson
There was a string of comments and a picture quite a while ago, either here or in the cameramakers discussion group, about usng a digital camera intended for Barbie dolls as a pinhole. I don't see any reason not to try it. If you have access to a back, it shouldn't act any different than a lens

Re: [pinhole-discussion] CibaChrome Processor on EBay

2001-11-01 Thread Bill Erickson
I was the one asking about Ilfochrome. thanks for the information, but I already have a JOBO. The chemicals shipped with no problem from Calumet. - Original Message - From: Andy Schmitt aschm...@warwick.net To: pinhole discussion list Pinhole-Discussion@p at ??? Sent: Thursday,

Re: [pinhole-discussion] Ilfochrome

2001-10-30 Thread Bill Erickson
Thanks for the help. I got chemistry from calumet. - Original Message - From: Andy Schmitt aschm...@warwick.net To: pinhole-discussion@p at ??? Sent: Monday, October 29, 2001 3:55 PM Subject: RE: [pinhole-discussion] Ilfochrome Dover Photo in Dover NJ has some stocks can get it for

Re: [pinhole-discussion] f stops

2001-10-30 Thread Bill Erickson
Each succeeding fstop is simply the diameter of the aperture divided into the distance from pinhole to film. The specific numbers are traditional and represent a set of diameters that yield aperture areas that are double or half the adjacent one. - Original Message - From: ragowaring

[pinhole-discussion] ilfochrome

2001-10-29 Thread Bill Erickson
Thanks for the replies re P30. I had looked in the on-line catalogues but not in the hard copy. Calumet says there's no extra shipping charge as long it is shipped by ground. Which 85 filter is best? And is the paper ca ISO 6, like BW? I've made a camera which will yield a close to 180 degree

[pinhole-discussion] Ilfochrome

2001-10-27 Thread Bill Erickson
I want to use ilfochrome paper for direct positive prints. I have experience with RA-4 processing in a JOBO. I can't seem to find the processing chemicals for ilfochrome in any sort of volumes practical for 'wet lab' home processing. It looks like the chemicals are only packaged in larger

Re: [pinhole-discussion] 12x18 w/35mm lens

2001-10-24 Thread Bill Erickson
Calculate the diameter of each f stop at the original focal length-probably 40 or 50 mm. Diameter equals focal length divided by f stop number. Then divide aperture diameter into your new lens to film distance to get the new f stop. You undoubtedly won't get full coverage of your new format with

Re: [pinhole-discussion] minimum zone plate focal length?

2001-10-19 Thread Bill Erickson
As with all things pinhole, the rule is try it!' My understanding is that zone plates of focal length less than 75mm are unreliably small to make. - Original Message - From: TSHACK tsh...@silver-bayou.com To: pinhole-discussion@p at ??? Sent: Friday, October 19, 2001 12:36 PM Subject:

Re: [pinhole-discussion] long, long focal length Q

2001-10-19 Thread Bill Erickson
You would just have a very narrow acceptance angle and a very long exposure time, plus difficulty knowing just what you were pointing at. there are some pictures of cameras like ths in eric renner's book. - Original Message - From: John Ptak jfjp...@yahoo.com To: pinhole-discussion@p at

Re: [pinhole-discussion] Pinhole size for a Nikon bodycap

2001-10-08 Thread Bill Erickson
calculate the optimal diameter for 38 mm distance. - Original Message - From: LEGE ARTIS legear...@trak.to To: pinhole-discussion@p at ??? Sent: Sunday, October 07, 2001 11:43 AM Subject: [pinhole-discussion] Pinhole size for a Nikon bodycap Hi there, Does anybody know which size

[pinhole-discussion] cameramakers

2001-10-03 Thread Bill Erickson
here's the right one http://rmp.opusis.com/mailman/listinfo/cameramakers. to post a message on the discussion use cameramak...@opusis.com

[pinhole-discussion] making plastic cameras

2001-10-03 Thread Bill Erickson
If anyone is interested, there is a discussion going on currently on the cameramakers discussion group about making plastic cameras. Lots of advice about different methods of molding different plastics. This discussion group began as the society of handmade cameras, which seems mostly defunct.

Re: [pinhole-discussion] 35 mm body f.l. determination

2001-10-02 Thread Bill Erickson
It'll work. - Original Message - From: Murray upt...@uptowngallery.org To: pinhole-discussion@p at ??? Sent: Monday, October 01, 2001 6:28 PM Subject: [pinhole-discussion] 35 mm body f.l. determination I hope I did it right - I took a steel rule as well as a depth caliper and

Re: [pinhole-discussion] pinhole camera in any lang

2001-09-26 Thread Bill Erickson
The term natural camera appears for the first time that I know of in Petzval's 1857 presentation On the Camera Obscura, where he defines the natural camera, which uses only a small hole to gather images, as one which is elementary in character, convenient in form and inexpensive to produce- -it

Re: [pinhole-discussion] what do i do with 4x5 film negatives

2001-09-23 Thread Bill Erickson
You can make duplicate negs and manipulate them, you can find someone or someplace with a 4x5 enlarger and enlarge them. If you just want to play with camera-making and contact printing, try making a 5x7 or even an 8x10, both of which make great contact prints. - Original Message - From: R

Re: [pinhole-discussion] Ann Hamilton, mouth camera.

2001-09-23 Thread Bill Erickson
how refreshing to be back on task. - Original Message - From: Robert Kosara rkos...@asgaard.tuwien.ac.at To: Pinhole Discussion List pinhole-discussion@p at ??? Sent: Sunday, September 23, 2001 9:12 AM Subject: Re: [pinhole-discussion] Ann Hamilton, mouth camera. Hello, On Sun,

Re: [pinhole-discussion] Pinhole Construction ?

2001-09-23 Thread Bill Erickson
I have made multiple pinhole lens boards, with one pinhole near each edge. You have to offset the board in order to center the pinhole. - Original Message - From: mdelman mdel...@rochester.rr.com To: pinhole-discussion@p at ??? Sent: Sunday, September 23, 2001 6:06 AM Subject:

Re: [pinhole-discussion] T-Max reciprocity

2001-09-21 Thread Bill Erickson
I mentioned recently but it's petinent to this message. Overexposure at long exposures is lessened by the reciprocity failure. Also keep in mind that in oder to get even one stop of change at long intervals. You have to double the metered time for your pinhole size and then double it again to get

Re: [pinhole-discussion] simple enlarger question - red filter?

2001-09-19 Thread Bill Erickson
I'm pretty sure you can use it to line your paper up, but you can also just line up the empty easel, if you're using one. If not, just line up a piece of paper and mark the edges with masking tape and put subsequent pieces of paper inside the tape lines. - Original Message - From: R Duarte

Re: [pinhole-discussion] Pintoids

2001-09-19 Thread Bill Erickson
There used to be the sleaziest camel imaginable in the Bismarck zoo. But that's off-topic. - Original Message - From: Marcy Merrill ma...@merrillphoto.com To: pinhole-discussion@p at ??? Sent: Wednesday, September 19, 2001 1:08 AM Subject: Re: [pinhole-discussion] Pintoids Guy

Re: [pinhole-discussion] Who we all are...

2001-09-18 Thread Bill Erickson
The second upper midwest pinhole gettogether is at pARTS gallery on Lake St, just west of lyndale, in minneapolis, 2pm sunday november 4..t - Original Message - From: tricks...@aol.com To: pinhole-discussion@p at ??? Sent: Tuesday, September 18, 2001 12:12 PM Subject: Re:

Re: [pinhole-discussion] 4 x 5 questions

2001-09-17 Thread Bill Erickson
I think the BTZS brand dark clothes are the sort you want. there are ads in View camera magazine. - Original Message - From: Gordon J. Holtslander hol...@duke.usask.ca To: pinhole-discussion@p at ??? Sent: Monday, September 17, 2001 2:34 PM Subject: Re: [pinhole-discussion] 4 x 5

Re: [pinhole-discussion] Determining exposure beyond.....................

2001-09-17 Thread Bill Erickson
I've had no experience with ilford HP%, and each BW film has it's own requirement. my general advice is expose longer than you think necessary and it'll probably be OK. The reciprocity failure you're trying to compensate for in fact buffers the overexposure error. - Original Message -

Re: [pinhole-discussion] Re: [pinhole-discussion]

2001-09-17 Thread Bill Erickson
I am 66, bought my first camera in 1958, my first year in medical school. I've been a devoted pinholer and self conscious follower of Eric Renner for about 5 years now. I propose two rules for you- the first is try it, and the second is have fun. - Original Message - From:

Re: [pinhole-discussion] Solidarity

2001-09-15 Thread Bill Erickson
This is very impressive, and very touching. Thank you. - Original Message - From: Guy Glorieux guy.glori...@sympatico.ca To: Pinhole List pinhole-discussion@p at ??? Sent: Saturday, September 15, 2001 4:09 AM Subject: [pinhole-discussion] Solidarity These images brought together by

Re: [pinhole-discussion] NYC photo (Zone Plate)

2001-09-14 Thread Bill Erickson
I really like your work, maybe because it goes in the same direction, and you seem to feel the same about it, as me. I was scheduled to go to NYC next week, and I had plans for exactly the same sort of Times Square shot. Very nice, very consistent quality work on your website. - Original

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