by Jon

submit your photo

Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Tag Info

New answers tagged


Another factor: Digital sensors are typically smaller than 35MM film frames. A lens which only has to produce a good (reasonably flat-focus and evenly lit) image across a smaller area can be simpler/cheaper than one which has to cover a larger area, for the same focal length and light-gathering ability. So some "digital" lenses are so marked as a warning ...


Yes, lenses designed for digital sensors have several differences from their older film based camera lens counterparts. One of the primary differences is that digital sensors are more reflective than film, so anti-reflective coatings are applied to the rear element of a digital lens. This helps prevent reflections off the sensor that could result in image ...


Some 'film' lenses designed for 35mm rangefinder cameras have a rear element which lies quite close to the plane of the film or sensor (mostly wide-angle lenses). These work fine for film, but when used on a digital camera cause quite noticeable colour shifts to the left and right of the frame. This is due to the extreme angle of the light from the rear ...


There is one significant difference between film and digital sensor for lens optics - digital sensors have a bit of glass and some filters in front of them. The blog has a pretty extensive series of posts on the effect of the sensor stack (short version, there is a very real effect for large aperture lenses) - so it is quite possible that the ...


I think you are putting too much emphasis on the "digital" part of the lens' DG designation. It seems to be more to differentiate them from "digital" lenses that are APS-C only. Sigma calls their current APS-C only lenses "DC". When digital SLRs first began to gain a foothold in the market, they almost all had sensors that were APS-C or similar sized. So new ...


I've had a waist level viewfinder attachment for a Nikon, and I've also used medium format gear (like the Yashica) that used them, and I found that I didn't like them on 35mm that much. The 35mm viewing screen feels much smaller than square medium format, making it difficult to use without flipping up the magnifier and holding it up to your eye (which ...


I've used these guys and was very pleased with the service: (They are also recommended here by ken rockwell)

Top 50 recent answers are included