Spell checkers can be a pain. For dissector read dessicator. Dr E D F Williams
http://personal.inet.fi/cool/don.williams Author's Web Site and Photo Gallery Updated: March 30, 2002 ----- Original Message ----- From: "Don Williams Finland" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Friday, August 02, 2002 8:00 AM Subject: Re: M50/1.4 fungus remedies? > No calibration needed. Take it apart in a methodical way and put it back in > the reverse order. Work on sheets of clean laser printer paper on top of a > couple of pieces of paper towel. Can you remove and replace a camera body > screw without changing the shape or appearance of the screw-head? If this is > true you can probably dismantle and reassemble a lens. > > And I said before it is wise to avoid scrubbing the glass with lens cleaning > tissue soaked in 'optical cleaning fluids' such as those made by Kaiser and > other photo companies. They will spread any oily residue evenly all over the > glass surface. Just use soap and water then get rid of it. > > Of course if you are a stone-mason, or a cello player, your hands might be a > bit rough and then you'd have to be careful about cleaning the elements with > fingers. The coating is rather delicate and can easily be scratched. But, > believe it or not, it would take a lot of scratching to degrade the > performance of the lens so you'd notice. Keep tools and fingers away from > the diaphragm. > > In Africa fungi grow on camera lenses like crazy. After cleaning them I put > the lens barrel and all the other metal parts in a lab dissector in which > there was a small beaker containing a solution of formaldehyde. The vapour > killed any remains spores and hyphae lurking there and ready to start > growing as soon as the lens was put back together. I don't recommend > formalin. It's nasty stuff and we know a lot more about it now than we did > in those days. > > D > > Dr E D F Williams > > http://personal.inet.fi/cool/don.williams > Author's Web Site and Photo Gallery > Updated: March 30, 2002 > > > ----- Original Message ----- > From: "Kristian Walsh" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, August 02, 2002 1:27 AM > Subject: Re: M50/1.4 fungus remedies? > > > > Hi Don, > > > > That's just about possible for me to do -- I might even be able to talk > > my way into getting use of a lab.. > > > > Problem is that I couldn't calibrate the lens afterwards :-( > > > > ... I'll just have to look for one without fungus, I think. > > > > -- > > Kristian > > > > > > On Thursday, August 1, 2002, at 01:52 pm, Don Williams Finland wrote: > > > > > Dismantle the lens. Clean all glass parts in hot soapy water with the > > > fingers - Fairy Liquid is good. Dry glass components, on edge, on a > > > clean > > > surface in a dust free place - after rinsing off all traces of soap > > > with tap > > > water, followed by distilled water. Don't be tempted by solvents like > > > alcohol. When dry put in microwave for a few seconds to evaporate the > > > adsorbed water molecules. Blow off all dust that attaches itself to > > > glass as > > > you reassemble the lens. When lens is all nicely back together put it > > > in a > > > container that can be tightly sealed with a few packets of fresh or > > > regenerated desiccant bags. Keep that way for a day or two. If the > > > fungus > > > reappears follow instructions given by Bob. Ideally this should be done > > > is a > > > dust free environment - a microbiology laboratory glove box perhaps? Of > > > course if you don't have the tools needed for this job you'll need to > > > borrow > > > or buy them. > > > > > > D > > > > > > Dr E D F Williams > > > > > > http://personal.inet.fi/cool/don.williams > > > Author's Web Site and Photo Gallery > > > Updated: March 30, 2002 > > > > > > > > > ----- Original Message ----- > > > From: "Bob Blakely" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Wednesday, July 31, 2002 1:36 AM > > > Subject: Re: M50/1.4 fungus remedies? > > > > > > > > >> Yup! > > >> > > >> Bet that in my younger days I could have gotten 92 mph out of a 50/1.4! > > >> > > >> (that's 148 km for you Canucks, Brits, Frenchies, Spaniards, Italians > > >> and > > > others who bowed > > >> to the metric gods...) > > >> > > >> Perfection is 90 feet between bases! > > >> > > >> Har! > > >> > > >> Regards, > > >> Bob... > > >> ------------------------------- > > >> "In the carboniferous epoch > > >> we were promised perpetual peace. > > >> They swore if we gave up our weapons > > >> that the wars of the tribes would cease. > > >> But when we disarmed they sold us, > > >> and delivered us, bound, to our foe. > > >> And the gods of the copybook headings said, > > >> 'Stick to the devil you know.' " > > >> --Rudyard Kipling > > >> > > >> From: "frank theriault" <[EMAIL PROTECTED]> > > >> > > >> > > >>> Hi, Bob, > > >>> > > >>> Did you go to the "Nolan Ryan School of Photography"? <g> > > >>> > > >>> -frank > > >>> > > >>> Bob Blakely wrote: > > >>> > > >>>> Fungus remedy: > > >>>> > > >>>> 1. Find a brick or concrete wall. > > >>>> 2. Place yourself approximately 7 meters from the wall. > > >>>> 3. Hold the lens in your hand with the first two fingers of your > > > hand on top of the > > >>>> lens barrel and the "pocket" formed by your thumb and curled third > > >>>> and > > > forth fingers. > > >>>> 4. Turn so that you are "3/4" facing the wall, keep your eye on > > >>>> the > > > wall. > > >>>> 5. Lean back, placing your weight on your rear foot, lifting your > > > forward foot. > > >> Stretch > > >>>> your forward arm out toward the wall. > > >>>> 6. Begin to push forward toward the wall with your rear foot while > > > at the same time > > >>>> propelling the lens forward with your two fingers. > > >>>> 7. As your forward foot nears the ground and your (was) rear arm > > > whips rapidly > > >> forward > > >>>> with the lens, give that extra push forward with those two fingers > > > thereby imparting > > >> more > > >>>> speed and a reverse spin which will add "lift" to the lens. > > >>>> 8. Pick up lens and extract the excess glass fragments. > > >>>> 9. Place on desk as paper weight. > > >> - > > >> This message is from the Pentax-Discuss Mail List. To unsubscribe, > > >> go to http://www.pdml.net and follow the directions. Don't forget to > > >> visit the Pentax Users' Gallery at http://pug.komkon.org . > > > - > > > This message is from the Pentax-Discuss Mail List. To unsubscribe, > > > go to http://www.pdml.net and follow the directions. Don't forget to > > > visit the Pentax Users' Gallery at http://pug.komkon.org . > > - > > This message is from the Pentax-Discuss Mail List. To unsubscribe, > > go to http://www.pdml.net and follow the directions. Don't forget to > > visit the Pentax Users' Gallery at http://pug.komkon.org . > - > This message is from the Pentax-Discuss Mail List. To unsubscribe, > go to http://www.pdml.net and follow the directions. Don't forget to > visit the Pentax Users' Gallery at http://pug.komkon.org . - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
