Search found 2864 matches

by Chris S.
Mon Sep 07, 2009 9:12 pm
Forum: Equipment Discussions
Topic: Time honored discussion :
Replies: 66
Views: 10770

Bruce, It seems we Chris's are thick as thieves at this forum. If you were asking if NikonUser and I are the same person--no, we're not. More likely, you were asking if he is some other Chris. Good luck with your search for a nice second-hand D200. While I don't have any advice about finding a good ...
by Chris S.
Mon Sep 07, 2009 2:49 pm
Forum: Equipment Discussions
Topic: Time honored discussion :
Replies: 66
Views: 10770

Bruce, Marvelous stuff, your underwater work. My experience agrees with others--my D200 and D700 work very nicely on the Nikon PB6 bellows, and on an older off-brand bellows, with no electrical problems. I do need to use a spacer because these bodies would otherwise bump the rear end of the bellows ...
by Chris S.
Mon Jun 15, 2009 11:04 pm
Forum: Equipment Discussions
Topic: Please help identify/mount oddly-threaded Nikon M Plans
Replies: 6
Views: 5362

Apologies for the long overdue reply. I was camping, and splendidly disconnected from computers. Now, back to reality. I had in fact become aware that these objectives had standard RMS threads on adapters--advice from a dealer in used Nikon microscope equipment. I'd even suspected it at first, but t...
by Chris S.
Thu May 21, 2009 10:34 am
Forum: Equipment Discussions
Topic: Bellows rubbish ...
Replies: 35
Views: 9129

I find compressed air to work better than vacuum for this purpose. For my bellows units, I fully extend the bellows to stretch out the folds, then I blow it inside and out using a can of compressed air. I try to aim things down to let gravity help out, but not so much that I tilt the air can and rel...
by Chris S.
Sat May 02, 2009 8:35 am
Forum: Equipment Discussions
Topic: Leads on the Voigtlander 125mm f/2.5 APO (EF mount)?
Replies: 2
Views: 1282

by Chris S.
Fri May 01, 2009 8:14 pm
Forum: Equipment Discussions
Topic: How to repair damaged threads on microscope objective?
Replies: 14
Views: 5744

An afterword for this thread, in case anyone ever has the same issue: I did take the lens to my jeweler friend, who cleaned up the threads in a few minutes and didn't seem to find it difficult. She started with a "watch knife" that I understand is normally used to open watch cases. Pretty soon she w...
by Chris S.
Sat Apr 25, 2009 9:14 am
Forum: Equipment Discussions
Topic: Please help identify/mount oddly-threaded Nikon M Plans
Replies: 6
Views: 5362

The colored band indicates (a range of) magnification. Thanks, Charles. I should have thought about that, but didn't. So the colored bands on these objectives are perfectly consistent with the information on the barrels. The thread on these is the larger "BD" thread. Generally you find the the brig...
by Chris S.
Fri Apr 24, 2009 1:03 am
Forum: Equipment Discussions
Topic: New Computer - but which monitor?
Replies: 5
Views: 1506

The Eizo's are outstanding. Last I checked, though, all but the smallest were above Steve's posted price target. If spending more is an option, a lot of people think highly of LaCie, also.

Cheers,

--Chris
by Chris S.
Wed Apr 22, 2009 10:04 pm
Forum: Equipment Discussions
Topic: New Computer - but which monitor?
Replies: 5
Views: 1506

svalley, Over at the post-processing and printing forum on Fredmiranda, this is a fairly frequent matter of dicussion. Paging back through the last month or so of postings, I see seven threads on the subject--and I recall many before that. Thought I might find one especially worth recommending, but ...
by Chris S.
Wed Apr 22, 2009 8:16 pm
Forum: Equipment Discussions
Topic: Please help identify/mount oddly-threaded Nikon M Plans
Replies: 6
Views: 5362

Thanks, mgoodm3. I hadn't seen that useful thread, and probably wouldn't have thought it applied since they are talking about BD objectives. But now that I look it over, I see how you may be right. Thanks also for the tip that Edmund has adapters in this size--the way they are labeled, I doubt I'd h...
by Chris S.
Wed Apr 22, 2009 12:37 am
Forum: Equipment Discussions
Topic: Please help identify/mount oddly-threaded Nikon M Plans
Replies: 6
Views: 5362

Please help identify/mount oddly-threaded Nikon M Plans

In my quest for objectives to use on a bellows, I recently received from separate vendors two Nikon M Plan plans with identical threads that are distinctly bigger than RMS. This surprised me. Don't only later, infinity-corrected Nikon objectives have non-RMS threads? Web sources seem to state that t...
by Chris S.
Tue Apr 21, 2009 1:42 pm
Forum: Equipment Discussions
Topic: How to repair damaged threads on microscope objective?
Replies: 14
Views: 5744

Elf, your approach seems very sensible, and I hadn't known the terms "riffler" and "needle" for files. Now that I do, I see a wide variety available at reasonable prices. But you've got me thinking--I have a friend who is a bench jeweler, and who would likely have a selection of these files and expe...
by Chris S.
Mon Apr 20, 2009 9:18 pm
Forum: Equipment Discussions
Topic: How to repair damaged threads on microscope objective?
Replies: 14
Views: 5744

Thanks, Rik and g4lab, for your helpful responses. Ugh, though. I've never been succcessful at carving wood or even soap--I understand the "thin shavings" bit, but practicing it has proven beyond my abilities. G4lab's advice about a good machinist, and what he should do, sounds like a first-class ap...
by Chris S.
Mon Apr 20, 2009 1:41 pm
Forum: Equipment Discussions
Topic: How to repair damaged threads on microscope objective?
Replies: 14
Views: 5744

How to repair damaged threads on microscope objective?

I recently purchased an M Plan 40x ELWD which, though cosmetically rough, seems OK optically. However, the threads are messed up in spots, as can be seen in the images below. This objective will mount--though roughly--on my Leica microscope turret (and in one of the pictures below, you'll see the me...