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Forum: Lens Clubs
10-14-2014, 10:49 AM
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I see two pproblems: first, how to keep softened grease from migratiing onto glass. Second, the root problem is that the grease has oolymerized. That means that grease molecules have joined together into longer chains, more like wax than grease The lighter flued would soon evaporate and leave you back where you started.
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Forum: Lens Clubs
10-13-2014, 03:02 AM
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(I want to start a new thread but don't see where, so I will be clumsy and hijack the latest thread on the forum.)
+++
Looking back from age 86, I remember with pleasure the introduction of preset lenses. Hooray! Can stop down and snap without looking at the aperture ring. Even better, the auto diaphragm: didn't even have to think about it.
The introduction of autofocus and digital has been a step backward for manual shooters: I might as well be back to my first Exakta when it comes to shooting technique. I have disassembled various Adaptall mounts, looking for a way to add a simple little DOF preview lever, which could serve same as preset, but I am not clever enough.
Now, decades after the fact, I have learned that the Olympus mount has a DOF lever. I have picked up a few and am weaving them in, with a few adaptations and modifications. As has been noted earlier on this forum, the OM bayonet is closely similar to PK and I am learning to grind away just enough to make them engage. Also there is a cheap adapter OM to EOS, so I use that on my Rebel. No adapter to PK is possible.
Two small problems with the OM DOF: the lever is not in a convenient place for hand-held shooting. I am shaping an extension from stiff wire to bring it closer to the shutter button. Also, for tripod shooting, the spring loading of the lever means it has to be held down. I have opened the mount and stuck a tiny piece of black tape on the back of the lever, adding enough friction to make it stay in the stopped-down position. The two solutions are not compatible so I add the extension to some and the friction to others. will paint them different colors.
I treasure my Adaptall collection, but as I age more of them get left at home and I want to pare down. The 30a is my newest; I am so impressed with it that I might remove the primes in its range--yes--drumroll--even the 63b. Not in a hurry; would like to hear from prospective buyers.
All in all, I think I have had more fun than most sane people.
Paul
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Forum: Pentax DSLR Discussion
06-01-2012, 04:22 PM
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I wouldn't have guessed there is an easy conversion of FD to PK; a bit curious cuz I still have some FD stuff. I am boiling down my AD2 set and it is looking real good; hoping to round it out with a 51A. We have more fun than sane people, don't you think?
~Paul
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Forum: Pentax DSLR Discussion
05-02-2012, 06:47 AM
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Thank you for superior wisdom,and I will now be content.
Blessings,
Paul
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Forum: Pentax DSLR Discussion
04-27-2012, 09:35 PM
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Some old posts mention this conversion but my search turns up nothing about how to do it. Anybody know?
Thanks,
Paul
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Forum: Welcomes and Introductions
04-11-2012, 02:12 PM
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To my new Pentax friends~
After a spell of messing with Canon and Nikon, I longed for a better way to use my real lenses.. In the ‘80s and ‘90s I bought a number of Adaptall II SP lenses; the crown jewel is...[drumroll...fanfare...] a 63B–yes, the vaunted 180/2.5, in near-mint condition. When digital took root I got lured away by stabilized lenses; just last week it dawned on me that the solution is to switch to Pentax, with stabilizer in body. This I am doing, and the Tamrons will have new life.
I bought a K200D which arrived yesterday. In my first look at the manual and some comments I have picked up on line I see two major concerns: something about stop-down metering, which I might live with in some conditions but not all. I need to know where auto-exposure works and where it doesn’t. Also, from what I have read I am not sure the stabilizer will function in some of the long exposures I get into. Hey, Mr. Pentax, it’s not rocket science: my Canon S5 IS stabilizes one-second exposures flawlessly if I take a drink first.
My quandary is that most of my photography is about A-minus level, and I am not sure it makes sense to keep an A-plus-plus-plus lens, the 63B, in my bag. Much will depend on what that lens is worth, since money is very tight here. I will not make a hasty decision, but if people are clamoring for it I probably will let it go. The 17/3.5, 24-48/3.8, 60-300/5.6, 80-200/2.8, 90/2.5, and 300/5.6 will keep me busy. If my eyes continue on their downward slope the whole bag will go on the block and I will go back to the S5 IS, that sees better than I do even now.
In the 1950s I bought a Retina IIIC and decided that photography is something to get serious about. An Exakta VX came next, and soon I was making tilt-shift mounts to adapt some lenses with a bit longer back focal length. Many 6x6,6x9, 9x12 and 4x5 outfits followed. I have had more fun than most sane people.
Blessings,
~Paul
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