Apr 16, 2005, 08:24
"G" lenses don't have an aperture ring. hence these lenses can be used in shutter priority and program mode with older bodies like F90/90x and F801. These bodies require the aperture to be set from the lens, whereas newer bodies like F50, F65, etc. use the bodies to select the aperture.
that's my take on it. the techies can probably give you a more detailed and technical explaination.
that's my take on it. the techies can probably give you a more detailed and technical explaination.