milsu Posted June 26, 2006 Share #1 Posted June 26, 2006 Advertisement (gone after registration) Could somebody point me at some examples of distortion which Summicron 50mm makes? I saw the graph on page http://www.leica-camera.com/imperia/md/content/pdf/objektive/datenbltterm-objektive/18.pdf but am not able to imagine what is it like in the photo. Link to post Share on other sites More sharing options...
Advertisement Posted June 26, 2006 Posted June 26, 2006 Hi milsu, Take a look here Distortion with Summicron-M 1:2/50mm. I'm sure you'll find what you were looking for!
Guest user8952 Posted June 26, 2006 Share #2 Posted June 26, 2006 you don‘t need low-resulution web-pics. the summicron 50 is the best 2/50 mm lens money can buy... (you wouldn't ask the Stones to audition for your birthday-party, would you?) Link to post Share on other sites More sharing options...
adan Posted June 26, 2006 Share #3 Posted June 26, 2006 Milos: That graph shows the Summicron 50 has NO distortion - the red graph line is almost perfectly flat. If it curved up or down, that would show some visible distortion. Take a look at the pdfs for some other Leica lenses (say, the 21 ASPH-M or the 15mm Elmarit-R or one of the zooms for the R) as a comparison to see the difference. In a distortion graph for, say, a fisheye lens, the red line would curve steeply downwards like a waterfall (more and more distortion or curving of the picture as the eye moves from the center to the corners/edges). Link to post Share on other sites More sharing options...
milsu Posted June 27, 2006 Author Share #4 Posted June 27, 2006 Thank you both for your instructions, they were helpful. I was just curious because all other lenses have distortion at the edge of the frame, but on Summicron 50mm it looks like it is positioned somewhere between the centre and the edge of the frame. So, no visible distortion, then. Thanks again! Milos Link to post Share on other sites More sharing options...
Guest user8952 Posted June 27, 2006 Share #5 Posted June 27, 2006 MTF curves are useless (sometimes even harmful) for most people... Link to post Share on other sites More sharing options...
tobey bilek Posted June 27, 2006 Share #6 Posted June 27, 2006 50 sumi or the new 50 2.8 are distortion free. This means that straight lines are supposed to be parallel to frame edges are parallel to the edges of the frame and not curved. The more distortion, the more they curve. For close work, enlarging lenses are distortion free. Link to post Share on other sites More sharing options...
wilyum Posted June 28, 2006 Share #7 Posted June 28, 2006 Advertisement (gone after registration) Milos, the Summicron is the Queen of 50mm lenses. If you find a better lens, buy it! My Summicron may not be perfect, but it is a hell of a lot better than my eyesight!! Best wishes, Bill Link to post Share on other sites More sharing options...
leicapfile Posted June 28, 2006 Share #8 Posted June 28, 2006 If and when the wolf ever shows up at the door, my 50 DR is the last lens he'll get! Jerry Link to post Share on other sites More sharing options...
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