Pixel density - can the playing field be leveled???

Started Jun 6, 2009 | Discussions thread
Ola Forsslund Regular Member • Posts: 451
Yes, the same or better (by sqrt(2))

briander wrote:

I will try to ask my question as simply as possible. If two camera's
have the same size sensor, and one is a 10 MP, and the other is a 15
MP, and I lower the resolution on the 15 MP to 10, can I expect the
same picture quality for a noise perspective? Of course, this is
putting all of the other camera functions (noise reduction, etc)

Let me quote Eric Fossum, who developed the first CMOS sensor: "IQ isn't all about the number of pixels, but number of pixels helps, all else being equal." http://forums.dpreview.com/forums/read.asp?forum=1000&message=26737153

I am tired of reading "if this company would have resisted the
megapixal war, this would be a great camera". What the hell does
that mean?

It means that people commonly getting fooled by comparing images of different sizes! They do this by watching pixels at '100% zoom', ignoring the fact that the higher MP image is bigger.

Can I lower the resolution to get the same reduction in noise, that
the lower res camera has?

Yes, but you will need to apply some filter (a blur filter for example) first, since the resampling algorithms in popular programs (e.g. Photo Shop) are bad.

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