The Nikon D4 uses all 14 of its bits all the time except for those lost to digital white balance. The Nikon D800E is at 14-bit device with all codes present except for those lost to digital white balance until the ISO knob gets to 3200. Then the gain of the analog amplifier stops increasing… [Read More]

At ISO 100, it looks like the NEX-7 has a 12-bit ADC: At ISO 200, more noise: at ISO 400 still more noise. Note that we’ve not seen the bucket at 32 counts occupied in one of the histograms so far : At ISO 800, still more noise, and still nothing happening at count 32:… [Read More]

At ISO 100, there’s a big surprise; the 14th bit is AWOL: At ISO 200, pretty musc the same thing with a bit more noise. The odd dip to the left of the mean of both green channels is curious: More of same at ISO 400: At ISO 800, the red channel is clipping: At… [Read More]

At ISO 100, the D800E shows all codes in use except for the red and blue channel WB digital gain dropouts: At ISO 200 there are no surprises: At ISO 400, just some more noise. You can see that the blue channel has more digital gain applied to it than the red channel: At ISO… [Read More]