http://www.willoughbys.com/Sony-Alpha-DSLR-A850-Full-Frame/M/B002MPPRNG.htm The A850 features a 35mm full-frame Exmor CMOS image sensor that is approximately 2.35x larger than the APS-C sized sensors found in many DSLR cameras. The result is a larger capture area, improved wide angle performance, and tighter depth of field control. In addition, its 24.6MP resolution maximizes the resolving power of your existing lenses and delivers sharper, higher contrast photos.