stump4545 Posted February 2, 2012 Author Share #41 Posted February 2, 2012 Advertisement (gone after registration) for example at 6ft, to compensate for recomposing to take a guess at it are we talking leaning back 6in or is it more like stepping back 1 foot? i already started to experiment but it would be nice to have a good starting point? ------------ last question, does the .95 have "curvature of field" wide open that might on its own help correct the recomposing issue? thank you kindly. Quote Link to post Share on other sites More sharing options...
Advertisement Posted February 2, 2012 Posted February 2, 2012 Hi stump4545, Take a look here accurate focus wide open and recomposing. I'm sure you'll find what you were looking for!
zlatkob Posted February 3, 2012 Share #42 Posted February 3, 2012 One foot is likely too much, but again it depends on all of those factors. If you are 6 feet away and recomposing by, say, 2 feet on your subject (assuming that's the distance from their mid-section to their head), then the shift is just under 4 inches, and that's assuming the lens has a flat field. For most lenses at most apertures, that's enough to ignore because the depth of field takes care of it. However, I don't know about the Noctilux at f/0.95, or its curvature of field. Quote Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted February 3, 2012 Share #43 Posted February 3, 2012 The 0.95 is not flat field, neither is the new SLR Magic 0.95 as can be clearly seen from the test shots. After 40 posts on this I think it's about time you do some homework and tell us: How "accurate focus wide open and recomposing" is done with the 0.95... Several members here have been very helpful and written their opinion and "How to" so it should be possible now for you to test your 0.95 Shall we say two consecutive frames that are in focus, first recomposed to the right then to the left f/1.4 at 4 feet, vertical and horizontal... Thank you and have a nice weekend! Quote Link to post Share on other sites More sharing options...
Erik Gunst Lund Posted February 3, 2012 Share #44 Posted February 3, 2012 The 0.95 is not flat field, neither is the new SLR Magic 0.95 as can be clearly seen from the test shots.... Here are links to two samples from SLR Magic, actually thy look like the lens have a almost parabolic dof zone... Link Link Quote Link to post Share on other sites More sharing options...
stump4545 Posted February 3, 2012 Author Share #45 Posted February 3, 2012 testing i have already started and to me it seems so far that the dreaded focus is not that apparent wide open at say 6ft. maybe it has something to do with the curvature of field of the .95. i will keep playing with it. thanks again everybody for all the help. Quote Link to post Share on other sites More sharing options...
alex7075 Posted May 8, 2016 Share #46 Posted May 8, 2016 (edited) I ran a test on my Noctilux to better understand this topic: http://www.l-camera-forum.com/topic/248135-field-curvature/?p=3041115 Hope it can be of some help. Edited May 8, 2016 by alex7075 Quote Link to post Share on other sites More sharing options...
Giulio Zanni Posted May 9, 2016 Share #47 Posted May 9, 2016 Advertisement (gone after registration) What about using the EVF with focus peaking? Quote Link to post Share on other sites More sharing options...
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