another thing you have to deal with is exposure compensation when extending
lenses into the macro range. It varies with extension so getting exposure correct
is a challenge.

On 3/4/2015 9:42 AM, Bulent Celasun wrote:
I was searching for a proper, locally available 150mm lens (it is not
included in the package) as the standard focal range.

I was thinking that the range of movements might have helped in
selectively increasing the DOF.
If that is not the case even with extreme range of movements I have to
re-consider!

Thank you :)

Bulent


---------------------------------------------------------------------
http://patoloji.gen.tr
http://celasun.wordpress.com/
http://www.flickr.com/photos/bc_the_path/
http://photo.net/photodb/user?user_id=2226822
http://www.pentaxphotogallery.com/artists/bulentcelasun


2015-03-04 16:31 GMT+02:00 J C OConnell <[email protected]>:
based on my experience with large format photography:

first of all, the larger the format, the less DOF. so macro photography on
large
format is very difficult due to narrow DOF.

focusing a 90mm F8 lens isnt that difficult with a lupe, but its
a wide angle and not really suitable for macro. For macro I would
recommend something in the 150mm to  210mm range as a side
benefit these lenses are usually faster too f4.5-f5.6.

havent checked the availability of film lately.

B+W used to be pretty cheap per exposure, especially if your
only developing two sheets at a time in a drum with 1 shot
developer.

jco



On 3/4/2015 8:53 AM, Bulent Celasun wrote:
I may be able to get a 4x5" camera with a 90mm f/8 lens.
Price aside (which is another big question mark), I have questions.

First, the reasoning:
I like macro photography most.
I am getting increasingly more able to spend time on photography.
I like spending "hours" to get one single beautiful image.
I can develop and scan film. I can get a drum scan occasionally if needed.
I can make contact prints. (My enlarger supports up to 6x8 cm film).


Questions:
- How difficult is focusing using the 90 mm f/8 lens?
- How difficult is it to find proper film?
- Any idea about the cost of a single exposure (film only)?
- Further comments?

Bulent


---------------------------------------------------------------------
http://patoloji.gen.tr
http://celasun.wordpress.com/
http://www.flickr.com/photos/bc_the_path/
http://photo.net/photodb/user?user_id=2226822
http://www.pentaxphotogallery.com/artists/bulentcelasun


--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and
follow the directions.


--
PDML Pentax-Discuss Mail List
[email protected]
http://pdml.net/mailman/listinfo/pdml_pdml.net
to UNSUBSCRIBE from the PDML, please visit the link directly above and follow 
the directions.

Reply via email to