Wide angle lenses

[Walt]

Lenses designed for digital have the light optimized to strike the sensor, or film plane, straight on rather than fron an angle. It works better for the sensor that way but either work well for film.

 

[markc]

BTW, the Canon lenses designed for digital are labeled EF-S, not EF, and won't fit the film bodies on purpose so that you don't get the vignetting by accidentally using them.

That black bit that sticks out past the metal mount interferes with the normal EF mount so that it won't slip all the way into the body and latch. It's a neat way to have a digital only lens, yet still allow film lenses to mount on the digital body.

 

[Big Mike]

Hey Mark, nice to see you around here again.

I read somewhere that the EF-S lens (back when there was only one) could mount onto a film EOS but that the rear protrusion would interfere with the mirror.

Someone said that there was a way to use it by using mirror lock up and detaching/reattaching the lens.

Not worth the hassle IMO.

Of course, I've never tried it so I can't verify this.

 

[markc]

Oh, perhaps it will fit then. I know it shouldn't be used normally. I was just assuming, which isn't good. At any rate, the EF-S is meant for just digital.