I recently asked a question about a particular zoom lens. That lens is available as the 35mm version or with the special DG designation..light output sized for the digital sensor.

Does that make any difference? Is "digitally optimized" a marketing buzz word? Why would manufacturers make lenses with light areas to fit digital sensors if that is not a good thing?

I am confused. Perhaps some of you who have DSLR cameras and use the lenses you already had for 35mm can tell me if it makes any difference.

I wondered if it affected the actual f value..then figured that is the light "output received", not the light "area" struck.

So, if I use a 35mm lens on the DSLR and a similar one with a light area cut down to sensor size, does that make any difference at all in the final image?

Since one of the first brags about the DSLR was to be able to use lenses already on hand from the 35mm..I wonder about the value of the special "digital" lens.

Any thoughts at all will be appreciated. TomDart.

Message edited on: 06/13/2005 19:08