Pixel Density is GENIUS!

Started Jul 13, 2008 | Discussions thread
ejmartin Veteran Member • Posts: 6,274
Re: No really, it isn't

RRJackson wrote:

simpy wrote:

RRJackson wrote:

The D3 is a 12 megapixel 135-sensor camera. A compact 5 megapixel
camera with a 2/3" sensor could have close to the same photosite size.

Err.. I think your math is a little off here. The D3 has a sensor
area that is approx. 16 times larger than a 2/3" sensor. The 5MP
compact sensor therefore corresponds to an approx. 80MP 135 format
sensor.

Eh, it was actually off the top of my head.

24mm x 36mm / 2.5 ~ 10mm x 14mm. That's actually closer to the range
of 1" sensors than 2/3" sensors, but my point was that a reasonably
sized sensor with a much lower pixel count should be able to perform
nearly as well as the high-end of current DSLRs, which are just now
starting to have low light and latitude performance that's truly
useful.

Better stop doing math off the top of your head. If you're going to reduce the full frame sensor by a factor 2.5 in each direction, then the area reduces by 2.5x2.5=6.25, and now you only get a little less than 2MP of those big fat D3 photosites.

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