"Paul Furman" wrote:

It depends on sensor characteristics and processing but yes, smaller
pixels on the whole means lower image quality. Physics rules.

It means reduced dynamic range.

Not even that. You can always pixel bin (if the camera supports that) the
same DR as larger pixels, or downsample to get very close to the same DR.

The problem is that if you have a 21MP camera, you'll find that you like
21MP images and that downsampled images aren't very interesting.

--
David J. Littleboy
Tokyo, Japan