This article should be read by everybody

Started Dec 12, 2013 | Discussions thread
TrojMacReady
TrojMacReady Veteran Member • Posts: 8,729
Re: Proof is harder to obtain than you think

K E Hoffman wrote:

sybersitizen wrote:

K E Hoffman wrote:

Sony did us a favor and I found the samples I was looking for. They built a 24 MP SLT APC camera and a 16 MP SLT APC at basically the same time so we see the costs of smaller pixels IN THE SAME GENERATION of sensor.

Problem #1: The 'same generation of sensor' is an undefined term. You can't assume that these two sensors and their supporting hardware and firmware are identical in all ways other than resolution just because they appeared in cameras that were released closely in time. In reality we don't know what other important differences there might be.

Similar technology, same sensor size. MORE PIXELS CREATES MORE NOISE because the signal output of the pixels is less but there are fixed noise contributors. So more pixels in mid to lower light areas will be about noise not the shot. Images with areas of dark will show noise there.

Problem #2: Really? Always? You are using DPR comparisons to support your ideas, so try going to the DPR comparsions between the A7 and A7R to find the same proof of those assumptions. If you don't find the difference you were expecting, you can claim that they are not 'similar technology' even though they were released simultaneously in almost identical bodies... but then you are stuck in a circular argument that cannot be resolved.

I would say the 36MP sensor does better than the 24 MP sensor more than the removal of the AA filter can attest to. and when scaled it looks even better.

The AA filter or removal does nothing, nilch, in terms of efficiency. SNR is unaffected.

The D800 already has the 36MP sensor, the 24 MP sensor was first announced 7 months later in the D600 and A99 (which is hard to compare because of SLT and on sensor PDAF to begin with).

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tex
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