Do you think the image of SD14(SD15/DP1/2) is cleaner than that of SD1m(DP1m/2m) ?

Started Jan 12, 2013 | Questions thread
Roland Karlsson Forum Pro • Posts: 27,315
Re: A correction to my post above :-(

xpatUSA wrote:

After reading Clark's article again, "that limit" is stated quite clearly as 5um which makes the SD1, at 4.9um, almost perfect in that regard, especially around the f/4 mark. Cameras with larger pixels at that same aperture would show "jaggies" more clearly on edges.

The Clark article is simply wrong.

He first says that today´s sensors are photon limited. And then he goes on and says that increasing number of pixels increases noise and decreases dynamic range.

That is only correct if you assume that you are going to either crop the image or enlarge it so that the pixel density is the same in the print, and then also look at the image at the same distance.

Which generally is a bogus assumption.

If you print the whole image at the same size, then there will be no IQ problems with having more pixels, if you are photon limited.

Moreover - there is ABSOLUTELY not any 5 um limit. The limit is strongly dependent on the technology for the sensor. If the technology is such that the percentage of captured photons do not drop when having more pixels, then the noise and dynamic range is not affected at all. We are not there yet, but getting closer for each generation of sensors.

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