|
I think its not that cut and dry.
Depends on the target. Some targets are widefield with bright and dim areas.
If you zoom in (F6) you may be imaging part of the dim area. If you zoom out (F3) you would be taking in more of the bright areas and therefore more signal and it would expose faster (not the dim areas though).
Of course you are assuming even performance of 2 sensors one with half the size pixels of the other and we know that is rarely the case.
9 micron pixels seems to be the allround winner in cameras. Theoretically smaller pixels should work better in a faster system but Kodak chips seem to perform best around the 9 micron pixel size. Perhaps a characteristic of their architectural design?
Kodak went to 5.5 micron pixels with their true sense sensors. These sensors only now seem to be coming out in cameras despite being around for quite some time. It takes the market a long time to accept new products like that.
Of course there are no popular cameras with either 4 or 2 micron pixels out there. The smallest Kodak is 5.4microns. Not sure about Sony - they may have some in the 4+ micron band.
Greg.
|