Originally posted by ogl Do you think that there is any serious difference between 44*33 and 48*36 mm?
Especially, if 44*33 is new generation CMOS sensor. And 48*36 mm is rather old CCD sensor.
I think new CMOS will be better in all ways.
In addition to the different crop factor (1.25 for 33x44 vs. 1.15 for 36x48), there are differences, within the same CCD sensor generation (same pixel pitch), between 33x44 and 36x48 sensors: more pixels (e.g. 40m for 33x44 and 50m for 36x48), hence more definition and, more important, smoother transitions between in-focus and out-of-focus areas.
As for the new CMOS sensor, the pictures I have seen so far aren't convincing in comparison with those taken with the "old" CCD sensors but they stemmed from pre-production IQ250 Phase One digital backs with beta firmware. In addition, this IQ250 is the first CMOS sensor ever that Phase One are handling.
In this respect, Ricoh have an advantage since they know very well how CMOS Sony sensors behave in a variety of conditions and have been able to fine tune their firmware accordingly.