"But at low ISO nothing can beat this camera." - CEO SIGMA Pt. 2

Started 7 months ago | Discussions thread
Erik Magnuson
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Re: Marketing Hyperbole
In reply to Basalite, 7 months ago

Basalite wrote:

Is it fair to call a 15MP Bayer sensor camera 15MP when much of the color is interpolated?

Yes, because technically MP is not a measure of (color) image resolution.

After all, the implication is that a higher MP sum will yield a higher resolution photo than something less.

And for most cameras of a similar type in similar conditions this is approximately but not exactly true.  But if you compare a cell phone to a DSLR in dim light it will not be true.

If that were true then a 15MP Bayer sensor camera should be able to get comparable image quality to a 15MP Foveon sensor.

Note you are switching from "resolution" to "image quality" in this sentence.  Does a Foveon sensor have 15MP of "image quality" (or resolution) at ISO 3200 under tungsten light?  Can a mosaic camera resolve 15MP of detail with the right target and algorithm?  It seems that 15MP is a max theoretical resolution not a guarantee.

For the average consumer neither is helpful in the presence of the other.

The average consumer has no interest in Foveon-based cameras so the exception is of mainly pedantic interest.

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Erik

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