Originally posted by zapp Get the correct sensor in the first place. Less trouble with Dalsa sensors - all Leaf and new Phaseone backs
with the Pentax 645D, we don't have a choice. I wouldn't say Dalsa sensors are immune to the lens shading issue, but they do handle it better than Kodak sensors do.
and I have no interest in phasemia cameras - they aren't weather resistant, and a problem I have frequently heard from users of phasemia gear is that sometimes the sensor is way off the 0.5mm +/- alignment tolerance for the camera body, and phasemia camera bodies do not have AF adjust, so there is no effective way to compensate if the sensor is incorrectly positioned apart from replacing the entire camera or returning the digital back. With the 645D body being produced with the sensor built in it means the 645D is more likely to be within the specified tolerances.