Lenshacker Posted April 2, 2015 Share #301 Posted April 2, 2015 (edited) Advertisement (gone after registration) Uncompressed DNG, ISO2500, -1ev, pushed 1-stop in LR, no sharpening, no noise reduction: L1012652_DNGcrop by fiftyonepointsix, on Flickr Same exposure, same settings, waited until the buffer was flushed, DNG-8, L1012654_DNG8_crop by fiftyonepointsix, on Flickr My M9 has very low noise, and I have used it at ISO2500 -1ev, uncompressed DNG. The Noise level is less than 1/2 of the M8. I believe the DNG-8 compression routine increases noise where there are "boundaries between steps", but decreases noise once in the step. With the M8, more noise- more chances for bouncing between steps. The M9 has less noise, so less fluctuations. If you look at the DNG-8, the noise seems to be "correlated", I think it is following the steps. The uncompressed DNG looks more random to me. Sit back from the computer screen 3ft or so, look at each. I am still learning how to read DNG files, I have the old IEEE "mixed-Radix FFT" routine in the code. I will try it out to see what is going on with the frequency makeup of the image. I always thought the M9 could have added an ISO5000 setting. Edited April 2, 2015 by Lenshacker Quote Link to post Share on other sites More sharing options...
Advertisement Posted April 2, 2015 Posted April 2, 2015 Hi Lenshacker, Take a look here CCD vs CMOS: Can you tell which is which?{merged}. I'm sure you'll find what you were looking for!
friedeye Posted April 15, 2015 Share #302 Posted April 15, 2015 Thanks for this, David. As an M9 user, I think I hit about 90% - but who cares, really? The CMOS sensor, as you proved, is capable of… whatever one wants. I love my M9 and its capabilities - they seem to synch very well with my film cameras; I switch from my M9 to my M2 or 3 a lot and without a hitch. And I find now, shooting in manual, that I rarely have to use a meter. But that said, the 240 is an amazing camera, capable of so much more than the M9 (low light, LV, and lenses) -- One day I'll own one - or, perhaps its successor. Quote Link to post Share on other sites More sharing options...
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