has anybody further Information about converting M-Lenses for Canon ?
infinity focus is important though ...
can't convert the lenses, as others have said the flange to sensor distance is almost 20mm longer for canon lenses than m-mount. the only way to do it is to remove the mount on the canon camera, remove the mirror and some electrontics, and stick a new mount inside the gaping hole where the mirror used to be. then you can use m-mount lenses on a canon, but you know, liveview only since you had to get rid of the mirror. also, you might have some trouble reaching inside the old canon camera to turn the focus lever on some m-mount lenses.
Classic M lenses (through the 1960s) tend to be compatible with the Visoflex system. These will have FL 65mm and longer for infinity focus. In short, the optical head unscrews. I have five such lenses to include 90, 135 and 280mm.
Hard to see the effect, could you post a before/after crop? The iridescent feathers of that hummingbird make it difficult to see if there is noise there
carstenw wrote:
Hard to see the effect, could you post a before/after crop? The iridescent feathers of that hummingbird make it difficult to see if there is noise there
that's good, the noise reduction is applied to everything but the humming bird. at iso 3200 i don't find noise to be much of a problem for in focus objects it's oof areas where the noise is problematic. i gave the entire image a luminance noise reduction of 35 (detail 50) and color noise 40. then i used the brush tool to apply -100 noise reduction to the humming bird, which i assume just means it removes any noise reduction from the bird. finally a i applied luka's downsizing algorithm minus the two initial sharpening iterations that come at the beginning of the algorithm.
here is the image processed the same way except luminance noise reduction is set to zero and color to 25. perhaps this isn't the best example, the noise isn't terribly noticeable at 3200 here because the background is pretty bright: http://farm8.staticflickr.com/7028/6716323977_a745a85e14_o.jpg
Interesting differences. I only see anything different on the hummingbird and the top part of the branch it is sitting on, and there is more difference on the hummingbird than on the branch. I wonder if the NR took away some natural iridescence?
carstenw wrote:
Interesting differences. I only see anything different on the hummingbird and the top part of the branch it is sitting on, and there is more difference on the hummingbird than on the branch. I wonder if the NR took away some natural iridescence?
the differences are very obvious if you open the images in separate tabs and flip back and forth. most of the difference is on the bird, which is intriguing since i left the -100 noise reduction on the bird, i just turned off noise reduction on the entire image for the second image. it looks as though the one with noise reduction applied has much less local contrast on the bird despite my negative noise reduction mask. the difference in grain in the bokeh is noticeable but much smaller. i think i prefer the image without the noise reduction in this case. i'll have to fool around with the tool more (and find a better test image).
FrankC123 wrote:
I think you done an excellent job to capture these little fellows i think their all great , what shutter speed did you end up with using 1600 ISO,
thanks, they're all at 1/320 except for the last hummingbird shot, which is 1/200 and has much more noticeable motion blur.
I prefer the Leica lens to the 100/2 for several reasons, and I have had both long term.
The Contax 100/2 only looked nice wide open for portraits but did not appeal to me for general use. I had it for many years but used it mainly on corporate portrait shots, together with the 85/1.4.
The Contax 100/2.8 macro is a great lens. Not really up to the Leica lens but showing some nice qualities of it's own. I had mine for a short while only (half a year or so) and used it on film. I suspect it is optimized for close range as it did not do as well as the 100/2 stopped down for infinity. But, I did not own it long enough to further explore that notion.
The Leica 100/2.8 I liked better than both Contax 100mm lenses.
The new-ish Zeiss 100/2 Macro Planar seems to be an extraordinary lens, but I haven't had the pleasure.
