Hi Richard, on 08 Aug 03 you wrote in pentax.list:
>Olympus' brochures claim that the film-camera-based >lenses would not provide good results with the CCD >sensor because the light rays, especially at the >edges, do not properly strike the sensor at an right >angle. That's right. CCDs need parallel light rays to math the pixels on the sensor optimal. But this was no theme, when analogue lenses were produced. >Does anyone know if images taken with Canon's >full frame DSLR have any issues at the edges? IIRC I have read that there are problems in the edges and because of this the camera uses special algorithms to sharpen the edges. To a certain grade it is a question of the firmware, but it shows that there is a problem to deal with. >If yes, if Pentax does come out with a full frame DSLR, wouldn't we >need to buy new designed lenses to get the best results? Maybe. Or somedays we have CCDs which are less dependant on parallel light rays. Or they simply use Canon's software way. >If Olympus' claims are true, we should not count on using the existing >lenses on a full frame DSLR if we want to match the results of the film >cameras. I think, that this is only a question of time. Customers demand full frame to use their old lenses. If this demand can be answered in a technically and financially sensible way, then we will see those cameras. >The smaller CCD sensor in the *ist D is a compromise but it >allows us to continue to use our existing lenses with good results. ACK. Cheers, Heiko
