digital or film lens?

[bballboy30]

At the risk of sounding stupid, I should buy a digital lens for the Drebel, right? I am getting it at B&H and they offer both film and digital lens for the same price. Also, will the x-factor still apply with digtal lenses?

Thanks.
Alex

[FlyingPete]

There are only two types of EOS lens, the EF and EF-S.

There are no digital lenses as such, however the EF-S (S for short back focus) only works on digital cameras (only the Drebel & 20D without modifications to the lens).

I believe the B&H references are the same lenses, just in both places, in case people look under digital lenses instead of the other lens section.

The Drebel comes with an EF-S18-55 as a kit option, you can't use this on a film EOS, but there is nothing stopping you from buying a EF28-135IS, EF50 or something they will work fine.

The 'X Factor' applies to all lenses on sub 35mm sized sensors (Drebel included).

[bballboy30]

Thanks for the help FlyingPete!!

[robertwgross]

If you have no full frame sensor digital camera, and if you have no full frame 35mm film camera, then you can purchase any EF or EF-S lens and it will work fine.

However, some of us have either a full frame digital, or a full frame 35mm film camera, and the EF-S will not fit, so we avoid EF-S from our purchases. If I am going to buy a lens, I want to be able to use it on any camera of this family.

---Bob Gross---