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Question: Need some help with crop factor and wide angle lenses for DSLR!?
I have had a DSLR for more than a year now but I really hate the 1!.6 crop factor that my Canon Rebel XT has!. My favorite lens I have is a 19-35mm lens!. I greatly enjoyed the wide-angle properties of the lens but now with the crop factor, my 19mm is a 30!.4mm!. Are the new lenses labeled "Digital" lenses the same equivalent or are they adjusted to give you the mm measurement after a crop factor!? Basically I need to know if I would have to buy a 12mm lens to get the 19mm wide angle equivalent of a film camera!? Its all a little confusing and I just want a wide angle again and need it to be affordable!. If you know of any affordable EOS wide-angle lenses, please feel free to share that as well!.
Thanks so muchWww@QuestionHome@Com


Best Answer - Chosen by Asker:
The measurement of a lens in mm is a measurement!. The angle of view of a wide angle lens has to do with the format fo the sensor or film!.

The lens you need for what you want to do would be the Canon 10-22 mm wide angle zoom!.

"Digital" lenses just mean that they are designed to cover the smaller sensor found on most DSLR's The lenses them selves capture analog light!. Canon "digital" lenses are called EF-S, Nikon's DX!.Www@QuestionHome@Com

If you want 19mm, you need to put a 12mm on your DSLR!.Www@QuestionHome@Com

Just to add to Ace's answer, which is excellent, don't think that you must buy a "digital" lens for your camera!. As long as it is a current EF or EF-S Canon lens, you can use a so-called "full format" or "film" lens, also!. You can't put a digital lens on a full format or film camera, but you can go the other way!. For this reason and looking towards possible future purchases, I am more inclined to buy "non-digital" lenses from now on!.

For Canon, this means an EF mount will be suited for either film/full format or digital cropped sensors, but EF-S mounts will only be suited for digital!.

The EF-S lenses tend to be a bit less costly, though!.

Fhotoace chose a great lens for you!. It is not an "L" lens, but I understand that Canon will not place an "L" on anything less that a full format lens, no matter how good it is!.

http://www!.bhphotovideo!.com/c/product/35!.!.!.Www@QuestionHome@Com