Canon G1 X sensor review

Started Jan 31, 2012 | Discussions thread
Great Bustard
Forum ProPosts: 20,850
Re: Sensor size does not affect DR
In reply to Shorthand, Feb 5, 2012

Shorthand wrote:

Bustard - Quantum Efficency along with read noise is what goes in to high ISO performance, not dynamic range.

Dynamic range can be completely independent of QE - lower QE is more-or-less just like having a smaller aperture lens.

Quite right. I suppose what I should have said is that the G12 pixels (2 micron) have 2.11x (1.08 stops) the saturation limit per area as the D3s pixels, and only 70% the read noise / area (0.52 stops less) making for a 1.6 stop DR advantage at base ISO (based on an equal area comparison of a FF sensor composed of G12 pixels vs the D3s sensor).

However, as Steen noted, the S100 pixels (1.8 micron) extend that lead in further still in favor of smaller pixels.

Bob - While you're making good, cogent arguments, someone on the Internet will always be wrong ... and want the last word.

Ask Bob about 155.

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