Search found 2880 matches

by Chris S.
Sat May 01, 2010 1:22 am
Forum: Equipment Discussions
Topic: Infinity objective
Replies: 29
Views: 27978

This is an interesting area to me, and Rogelio and I have corresponded a bit on it. Kudos to Rogelio for carrying out the experiments. I'm not an optics guru like some other members of this forum, but in my ignorant mind, it seems to me that any "infininite" objective simply sends the light beams to...
by Chris S.
Mon Apr 26, 2010 11:27 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Case study: "Portable" stacking set-up.
Replies: 44
Views: 27681

(snip) the “ball/socket base” shown here very much up to about 10X, but over that it is nice to have some sort of x/y control to position the subject instead of manually sliding the base unit. So I envision an Olympus BHMJ block with a stage such as eBay 120561186690 or eBay 200464611561 attached t...
by Chris S.
Mon Apr 26, 2010 10:52 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Nikon CF N Plan 4x's comparison -images added
Replies: 24
Views: 5748

NU, thanks for taking the time to conduct and post this test. Very illuminating. Two thoughts: First, I'm glad the apo seems to be worth the extra cost, as I have one and am glad I don't have to slap myself in the forehead and yell "Doh." Second, stand back, boys. NU has shown he can make wonderful ...
by Chris S.
Sun Apr 25, 2010 8:43 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Computer shopping
Replies: 19
Views: 4701

Currently looking around for a new desktop computer myself. . . . What motherboard, processor, memory and other components should an of-the-shelf system have nowadays, so that it can be used for efficient photo editing? I think stacking including creating stereos with Rik's ZS are the most demandin...
by Chris S.
Fri Apr 23, 2010 11:58 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Computer shopping
Replies: 19
Views: 4701

David, from the information supplied at that link, the computer is probably OK. However, they don't tell us what motherboard is in use (they have this in common with most manufacturers), and the mobo is really the actual computer--so it's hard to say for sure if this is a great computer or not. The ...
by Chris S.
Fri Apr 23, 2010 5:27 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: House dust
Replies: 5
Views: 1845

Paulo, Yes, I taped a piece of black paper to the post that holds the subject stage--so it was far enough behind the lens to be way out of focus. Lighting was a pong ball diffuser with one Nikon SB-26 speedlight shining through. I've thought about adding a dark field capability. I can, of course, ba...
by Chris S.
Fri Apr 23, 2010 1:15 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: House dust
Replies: 5
Views: 1845

Tesselator, your home sounds like a really hard place to keep a sensor clean. That aside, must be an amazing place to live. I don't see dust mites either--hmm. I had thought they were too small, but after reading your post I looked them up, and it seems that some species should indeed be in the size...
by Chris S.
Mon Apr 19, 2010 11:11 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: Computer shopping
Replies: 19
Views: 4701

David, Are you committed to the Mac platform? How would you feel about building your own PC? If "no" to the former and "yes" to the latter, you could build yourself something much more powerful than you could purchase for a similar price point. It's not all that hard. If interested, I can send you t...
by Chris S.
Sat Apr 17, 2010 1:50 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: House dust
Replies: 5
Views: 1845

House dust

Am working out a protocol to photograph captured airborne particulates for a friend's thesis defense. We expect some components of the particulates to be repelled by glass, so here tried stretched Glad Wrap (kitchen plastic wrap) to hold the dust. Wanting to first work with something other than the ...
by Chris S.
Sun Mar 21, 2010 10:04 pm
Forum: Equipment Discussions
Topic: My Setup
Replies: 22
Views: 31897

Marc, beautiful setup and documentation! Am I missing something, or does it appear that you are impossibly shooting through the vertical post that holds the subject stage? Surely you're turning the subject stage around to the camera side of the vertical post, right? Cheers, and thanks much for shari...
by Chris S.
Sun Mar 21, 2010 9:53 pm
Forum: Equipment Discussions
Topic: Another snip?
Replies: 9
Views: 2344

Even at the current lofty prices, I won't sell my copy of the Nikon 4x apo. I have a subjective feeling that without this lens, the sun would lose its luster and salt would lose its savor. When I work a subject, it's nice to have a range of lenses that work pretty much the same way--are of the same ...
by Chris S.
Thu Feb 25, 2010 6:08 pm
Forum: Equipment Discussions
Topic: Snowflake Rig
Replies: 25
Views: 5348

I purchased the Nikon 4x apo last May from the same vendor referenced by ChrisR in his link to the current eBay auction, so apparently the vendor has another one. The lens is perfect, and the vendor was quite helpful. I paid $500 and have zero regrets--the lens is worth it. If I remember correctly, ...
by Chris S.
Thu Feb 25, 2010 5:52 pm
Forum: Equipment Discussions
Topic: Test: 4x NA0.2 Apo 160 for more magnification?
Replies: 2
Views: 1725

Very useful test, Chris. Thanks much. 7X is indeed an interesting magnification--I've been meaning to test and see at what point I should switch from my 4x apo to either the 10x m or N plan. You've given an interesting data point. Maybe none of the above lenses are really good at this mag, and I'll ...
by Chris S.
Fri Feb 05, 2010 8:42 am
Forum: Equipment Discussions
Topic: Microscope objective vials -- U.S. and Canada only
Replies: 3
Views: 1983

Riks's source seems really attractive. For what it's worth, I've done two successful vial transactions with the eBay vendor below. Note that if you check the vendor's other auctions, he has two different sizes of vials. http://cgi.ebay.com/Zeiss-leica-olympus-nikon-leitz-Objective-vials-A_W0QQitemZ2...
by Chris S.
Tue Jan 26, 2010 1:17 pm
Forum: Macro and Micro Technique and Technical Discussions
Topic: My new stage ...
Replies: 5
Views: 2839

Now Andrew comes out into the light. And he ups the ante. Wonderful rig!