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Discussion in 'Open Discussion' started by Amin, Apr 6, 2013.
READ ON Tim Ashley Photography
Excellent review by Tim Ashley.
Leica M, part 2: comparison with Monochrom | The TAO of Leica
CMOSIS has not published the technical specifications of the new CMOS based detector. The only hard spec that I am certain of is the new CMOS sensor has a saturation limit of 40,000 electrons per pixel and the CCD used in the M9, M-E, and M Monochrom has a saturation limit of 60,000. CMOS sensors incorporate a lot of signal processing techniques on the chip to reduce noise, including double-sampling to average out noise. With a CCD, you do not have that capability.
What's all this mean? Images from CCD's require more off-chip post-processing to reduce noise. CMOS sensors can do more with the data before it gets off the chip, and double-sampling means a 3dB reduction in noise before the image gets off chip. The CCD has a higher fill-factor than the CMOS sensor, meaning more material to increase well-capacity.
First 24hr impressions at LL:
Leica M240 Impressions