Marek,
Thank you for sharing this voluptuous image! It has inspired me to attempt something significant today.
Best regards,
David
Search found 635 matches
- Sat Oct 13, 2018 6:20 am
- Forum: Administrator's Appreciation Gallery...Photography Through the Microscope
- Topic: Callus remover
- Replies: 16
- Views: 18221
- Wed Oct 10, 2018 7:31 pm
- Forum: Equipment Discussions
- Topic: Lee diffusers?
- Replies: 14
- Views: 2321
On the LEE website the demonstrations seem to suggest that the sheets are very thin and therefore difficult to build a stable cylinder. Is the thickness of the sheet an option when buying the product? Thanks in advance, Carlos Magno Hello Carlos, These filters bend easily as flat sheets, but form v...
- Wed Oct 10, 2018 10:23 am
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
Re: hidden gem...
Thats the WA 35mm I assume, not the 30mm enlarger lens? The enlarger lens had serious CA issues. @dmillard: I think you use(d) this Minolta MD 2.8/35 mm SLR lens, latest Series is MD-III http://www.artaphot.ch/minolta-sr/objektive/150-minolta-35mm-f28 http://artaphot.ch/images/Technik/Sony_E_Full_F...
- Tue Oct 09, 2018 7:15 pm
- Forum: Equipment Exchange
- Topic: Schneider-Kreuznach V38 parts and Unifoc 76
- Replies: 1
- Views: 1407
Oddss and ends
PM sent
Best regards,
David
Best regards,
David
- Tue Oct 09, 2018 5:07 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
3) retrofocus means the WD is at least reasonably good - ................................................................................................... 4) Some of them eg the Canons are good, lightweight, optically modern designs and not comparatively expensive. 5) several of us probably have ...
- Tue Oct 09, 2018 4:47 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
+/- 20% strikes me as a narrow range, particularly for a lens with a modest aperture. It makes one wonder which optimization SK care about most. Perhaps it's distortion? I guess it would be necessary to look very critically, at the rated mag. Qioptiq's Inspec.x L 5.6/105 line-scan lenses have simil...
- Mon Oct 08, 2018 2:26 pm
- Forum: Equipment Exchange
- Topic: SK Makro-Symmar 5.9/120 SR 5.6/120-0059 SOLD
- Replies: 0
- Views: 1382
SK Makro-Symmar 5.9/120 SR 5.6/120-0059 SOLD
SK Makro-Symmar 5.9/120 SR 5.6/120-0059 line scan lens, optimized for 0.75X magnification. As Robert O'Toole has demonstrated, this lens works extremely well in conjunction with a reversed Xenon. $299 + shipping. Please PM me if you are interested.
The lens has now gone to a good home!
The lens has now gone to a good home!
- Mon Oct 08, 2018 2:08 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
Well, for anybody that missed out on the Makro-Symmar, I will be posting one for sale very soon! :) As Robert previously said, usedparts-semifa is one of the best. I ordered the lens Thursday, and received it this morning before 9:00 am, extremely well-packed. I then quickly tested it against the Ma...
- Sun Oct 07, 2018 6:47 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
In 2012 I posted that I have a 35mm f/2.0 Mid 1977 (looks much like the one above) 28mm f/2.0 Approx 1943 (looks older!) That's interesting Chris. I just looked in Kingslake's History of the Photographic Lens , and according to him, the Schneider Xenon is an unsymmetrical six element double-Gauss l...
- Sun Oct 07, 2018 3:20 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
Thanks again for sharing the performance of this lens combo! From Schneider's data at https://www.schneideroptics.com/info/age_of_lenses/ , your particular 28mm & 35mm Xenons were produced in 1995 and 1996 respectively, but Schneider doesn't provide information about how long and how many of either ...
- Sun Oct 07, 2018 8:18 am
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
- Thu Oct 04, 2018 8:53 pm
- Forum: Equipment Discussions
- Topic: Stacked Lens vs APO objectives at 4x with Surprising Results
- Replies: 88
- Views: 11296
- Thu Oct 04, 2018 8:20 pm
- Forum: Equipment Discussions
- Topic: Lee diffusers?
- Replies: 14
- Views: 2321
I use a variety of Lee filters, primarily as cylinders on my Mitutoyo and Olympus objectives. I often combine them with an inner layer of 214 Tough Spun to further cut interior reflections, or selectively mask them with black cardstock. Like Harald, I have found them to be very color neutral, but I ...
- Mon Oct 01, 2018 11:03 am
- Forum: Technical and Studio Photography -- Macro and Close-up
- Topic: Foraminifera fossils
- Replies: 5
- Views: 1598
- Tue Sep 25, 2018 1:35 pm
- Forum: Equipment Discussions
- Topic: 5x Magnification Ideas and Suggestions
- Replies: 27
- Views: 4282
A quick test of the 7.5X with an Apo-Symmar 135mm f/5.6 shows that it easily covers the full frame of a Sony A7Rii at 4.91X. I think the darkened corners seen here may result from mechanical vignetting somewhere else in my system (the lens aperture, PB-6 bellows, or the Nikon-Sony adapter), rather t...