dritz Posted March 10, 2013 Share #1 Posted March 10, 2013 Advertisement (gone after registration) It has the same filter thread size as the 120 (72mm). Any experience with it, especially on the 120? I hold up the Elpro for the 120-Macro-R and am drooling at the possibilities. Thanks. Link to post Share on other sites More sharing options...
Advertisement Posted March 10, 2013 Posted March 10, 2013 Hi dritz, Take a look here Elpro-S 180 on the 120?. I'm sure you'll find what you were looking for!
dritz Posted March 11, 2013 Author Share #2 Posted March 11, 2013 S2 ISO 160, 120 Macro, f2,8 at 1/15sec (cropped to 3546 x 3646), and then the 100% crop. Barely processed in lightroom. Wouldn't a 120 Elpro-S be a splendid addition... Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/200221-elpro-s-180-on-the-120/?do=findComment&comment=2267428'>More sharing options...
01af Posted March 11, 2013 Share #3 Posted March 11, 2013 I hold up the Elpro-S for the Apo-Macro-Summarit-S 120 mm and am drooling at the possibilities. Forget it. The Elpro-S 180 is meant for the Apo-Elmar-S 180 mm lens at distances between 1.1 m and 2.7 m. This means a strength of approx. +0.4 dpt. So on the Apo-Macro-Summarit-S 120 mm at or near maximum magnification, it will hardly make any perceptible difference. Link to post Share on other sites More sharing options...
jlehrer Posted March 11, 2013 Share #4 Posted March 11, 2013 Funny you mention this because when the ELPRO was announced I was curious myself. In New York at the photo expo, I put the ELPRO on the S-120mm to see if it would make a difference, and you are correct that it does not. All it does is make the lens heavier. It does work beautifully on the 180mm however. Link to post Share on other sites More sharing options...
dritz Posted March 11, 2013 Author Share #5 Posted March 11, 2013 So, we're left with non-existant extension tubes or a screw-on after-market diaper? Dean Link to post Share on other sites More sharing options...
albertknappmd Posted March 13, 2013 Share #6 Posted March 13, 2013 Josh is correct! Just consider the physics.. The ELPRO adds nothing to the 120mm... Link to post Share on other sites More sharing options...
dritz Posted March 18, 2013 Author Share #7 Posted March 18, 2013 Advertisement (gone after registration) What about after-market close-up adapters? B+W and Heliopan make several 72mm screw-on filters in the range of +1 to +5 diopters. Thanks for your advice. Dean Link to post Share on other sites More sharing options...
01af Posted March 18, 2013 Share #8 Posted March 18, 2013 What about after-market close-up adapters? B+W and Heliopan make several 72 mm screw-on diopter lenses in the range of +1 to +5 diopters. Yes, these would work well due to their higher strengths. Those by Heliopan are high-quality double-element achromatic close-up lenses, and I guess those by B+W are basically the same. To bring your Apo-Macro-Summarit-S 120 mm from a magnification of 1:2 up all the way to 1:1 (life-size), you'd need a diopter strength of at least +8 dpt or, more likely, +10 dpt or thereabouts. The exact strength required depends on the design of the focusing mechanism, or, more accurately spoken, on the effective focal length at the 1:2 setting which most likely is not 120 mm. With a +4 dpt close-up lens, you'll get a maximum magnification of, umm, 1:1.4 - 1:1.35. With a +5 dpt close-up lens, you'll arrive somwhere near 1:1.35 - 1:1.25 (these estimated figures assume an effective focal length between 100 and 120 mm at the 1:2 setting). That's not quite life-size but still a worthwhile improvement over 1:2. At apertures between, say, f/5.6 - f/16, image quality should be just fine. Just avoid full aperture when using 3rd-party close-up lenses. Of course, you can always use two +4 or +5 dpt lenses (or one +4 dpt plus one +5 dpt; their strengths simply add up) to arrive at or near life-size ... but then, image quality probably will take a dip. Might still be good enough for many purposes though. Link to post Share on other sites More sharing options...
dritz Posted May 13, 2013 Author Share #9 Posted May 13, 2013 I purchased a Canon 500D close-up adapter threaded for the 120-APO. The results are promising. This photo is ISO320, 1/125th at F3.4. The second picture is provided to give context to the third picture, which is 100%, grabbed from the edge of the frame, 1/60th, F6.8. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/200221-elpro-s-180-on-the-120/?do=findComment&comment=2320281'>More sharing options...
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