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isleofgough

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Everything posted by isleofgough

  1. This may not be of interest to others, but here are two side by side pictures taken within minutes of each other, both with tripod and SL2 camera comparing Otus and Summicron shot at f2 with no difference in processing. It just shows differences in color and bokeh and was not intended to be a good photo.
  2. On close zoom, there is minimally increased sharpness with the Leica, so you may be right.
  3. I know this is not an identical image, but here are two fairly close images with the two different lenses rescaled quite a bit for upload.
  4. The effect is seen at different magnifications, but it is possible that there were microscopic differences in focusing between the two lenses. I slightly preferred the Otus rendering, but I get more keepers with the Summicron due to autofocus. In the end, the differences are subtle.
  5. I would have thought the purpose of an adapter is to maintain the distance between the rear element of the lens and the sensor, equivalent of the camera for which the lens was originally made. That does not mean that the distance of the rear element on a Leica lens to sensor would necessarily be the same as on a Nikon. The angle of view should be the same (if both were exactly 50mm lenses) but that is different from rear lens to sensor distance. The actual angle of light to the sensor from the rear element would not have to be the same either between the two different camera systems. I hadn't tried RawTherapee or Silkypix but a quick try of them didn't really seem to have an advantage over the programs I know better. I can get very close in C1P, but I have to turn moire removal up to 75/100. LR at 45 (brush) works pretty well but causes some color shifts that are undesirable. Rawtherapee did not work well with 1-2 iterations using AMaZE but Sinkypix wasn't too bad on its default settings. I actually could get a better result in C1P, but that is probably because I know that program. One things I am not seeing is a difference in sharpness between the two lenses, which would be strange if the moire is completely related to lens sharpness.
  6. I wonder if the differences in color moire are related to the angle light is hitting the sensor. I had previously used a Nikon D800E (which lacks an antialiasing filter) and rarely had to deal with moire in C1P, Lightroom, or Photoshop; when I did, it was usually easy to fix. With the Leica SL2, I have to use an adapter and assign the lens profile manually. The adapter physically distances the lens from the camera somewhat, and maybe that is what is happening. If this were just resolving power, I would expect to see a difference in sharpness at high magnifications, and I am not seeing it. The differences between the two lenses on bokeh and sharpness are so minimal that I don't really see an advantage of one over the other. Realistically, the very short depth of field at f2 means that even slight focusing errors will far outweigh differences in the laboratory. I have tested shots taken with a tripod using the two lenses on a SL2 in Capture One Pro, Lightroom, and FastRawViewer. DXOphotolab will not open SL2 files currently, so I cannot compare, but would be curious about "try another raw converter". Obviously, in C1P and LR, one has to assign the lens profile manually, as the adapter does not relay information about the lens to the camera.
  7. I know this is resurrecting an old post, but I was able to test a Leica 50mm Summicron SL side by side with a Zeiss Otus 55mm for Nikon on a new Leica SL2 camera. The autofocus feature of the Summicron is great and makes it a more useful lens. For straight sharpness, I don't really see much difference, even with pixel peeping. However, the color rendering is definitely warmer with the Otus than the Summicron. The one downside of the Summicron is it definitely has more chromatic aberrations - specifically color moire - compared with the Otus, which is not completely correctable in C1P or Lightroom. The Otus doesn't have any color artifacts, but here is the Summicron at 100% magnification that shows it. I tested them side by side with several images.
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