D3 sensor efficiency

Started Nov 18, 2007 | Discussions thread
DuncanM1 Contributing Member • Posts: 817
Re: D3 sensor efficiency

The ISO at which the full well capacity is reached is a measure of
the sensitivity of the sensor to light, but the full well is the full
well, regardless of ISO. Pending verification of your data, I am
skeptical of your measurement. If anyone else has data on the D40x,
please post it.

I have no problem with you being skeptical, but the 20D, with 6.4 micron pixels for example, has a measured full well capacity of 51,000e at ISO100, are you skeptical of that? The 40D is about the same as the 20D, despite its 5.7 micron pixels, while the D40X falls in between at 6.1 microns.

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