>>3065047http://www.fujirumors.com/why-dont-fujifilm-make-a-full-frame-camera-interview-with-fujifilm-manager-mr-takashi-ueno/Yes, higher image quality can be achieved with full frame sensors, but in order to maximize the use of the sensor size, the lens will be very bulky and heavy.
As you know, the size of full frame sensor, 24x36mm is exactly the same as the size of 35mm format analog film. But how they each receive light onto the imaging surface is completely different.
Firstly, the angle of light that film and imaging sensors can receive differ from each other. Film can receive light at the slanted angle of up to 45 degrees without any problem, but in case of the digital camera, the light needs to be as perpendicular to the sensor as possible. Slanted angle light causes mixed colors and therefore the real colors sometimes cannot be reproduced. In order to receive the light perpendicular to the sensor, it is important to make the rear glass element on each lens as big as possible to put the light beams parallel from the outlet of the light to the sensor. Finally, the back-focus distance should be shortened as much as possible to eliminate the degradation in image quality.
In case of SLRs, there is also the mirror box, it is very difficult to design an ideal lens especially for wide-angle and standard focal length lens. It is physically impossible to shorten the back-focus distance. As a result, many of the high image quality lenses for SLR bodies are designed with extended forefront and are of the larger diameter. You can see that by looking at the SLRs lens lineup.
