Craig Zendel schrieb: > > At least not with the current EF lenses? > > It would seem that the problem with producing a full frame sensor is far > from resolved. > > As I understand it, the difficulty lies in the thickness of the sensor and > RGB filter. > > If the sensor where made bigger, light travelling to the edges may be at > such an acute angle as to pass through the wrong part of the RGB filter, > causing incorrect colour, etc. Using the central part of the image circle > this is not a problem. > > Lenses for the new Contax N full frame (24x36mm) digital have a much larger > exit pupil than their film camera counterparts. > > The new Foveon x3 sensor has a multiplier of 1.7. Is this because of the > triple thickness of the array? > > Digital backs for MF cameras all use a much smaller sensor than the image > circle of the lens. > > So the cynic in me thinks that it's all done for commercial reasons, but > maybe not? > > Does anyone with a better understanding of this have any comments?
I probably don't have a better understanding, but I too have heard this thickness and angle argument. Well, let's assume it's true and the problems can't be solved, what would the consequences be? As I see it, this would mean: - We'll never get the same resolution with a digital SLR using EOS lenses as we get on film now. - Further increasing the resolution of digital sensors without increasing the size will result in smaller pixels, which also means less sensivity and more noise. So we would need faster lenses at least, which seems doable considering the smaller image circle. Faster lenses would be desirable anyway, because we need them to get rid of the larger DOF caused by the shorter focal lengths of the lenses. - It would make no sense to make these lenses EOS compatible, because they can't work for both "formats". Thomas Bantel * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
