DonPilou Posted January 16, 2017 Share Posted January 16, 2017 Good evening! In addition to the quick test of the new Kolari Vision UV filter, I have bought 3 new lenses including the Steinheil 50mm F/2.8 EDIXA Auto Cassaron. Until now I was using the Nikon E 50mm F/1.8 and sometimes the Yongnuo 50mm F/1.8, so I have decided to make a comparison of these three 50mm lenses I have for portrait photography. For this comparison I used 3 Yongnuo yn560 IV unfiltered at full power, the same camera distance (1m) and the same EXIF : 50mm, F/5.6, 1/40s, 400iso. The focus is not perfect at each time... After the take of the shots, each file was processed the same way. Note : the shutter speed is not a real parameter here because the only UV light source is provided by the flashes. It only has to be lower than the synchronisation time of the flashes : 1/200s. Here are the results of the test : Yongnuo 50mm F/1.8 Nikon E 50mm F/1.8 Steinheil 50mm F/2.8 EDIXA Auto Cassaron As you can see, the Steinheil 50mm F/2.8 EDIXA Auto Cassaron has really great performance in ultraviolet photography : the exposure is twice better compared with the two other lenses. It is a bit less sharp but you can shut down the aperture to 1 or 2 more stops and keep having a good exposure. The Yongnuo is not really good, its only good point is to have auto-focus. The Nikon E has really great sharpness (not on this shot but in my experience) but requires a lot of UV light. As a conclusion, I think I am going to change the 50mm I use for the Steinheil 50mm F/2.8 EDIXA Auto Cassaron for my next project to have a really better UV transmission. Link to comment
Andrea B. Posted January 16, 2017 Share Posted January 16, 2017 An excellent demonstration of the transmission differences between the three lenses. The Cassaron seems sharp enough to make good portraits. "-) Link to comment
Bill De Jager Posted January 16, 2017 Share Posted January 16, 2017 Thanks, Don. These tests are really revealing. Link to comment
Andy Perrin Posted January 16, 2017 Share Posted January 16, 2017 I have the Steinheil 50mm F/2.8 EDIXA Auto Cassaron but I wasn't as impressed. It transmits fine, but mine is super-soft. Link to comment
KhanhDam Posted August 22, 2022 Share Posted August 22, 2022 UV Photography Compatible Lenses - Kolary Vision (kolarivision.com) this webpage has good comparison images and I agree the 50mm 2.8 steinheil looks best. Link to comment
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