Quote:
| Originally Posted by YMFB Is the correction factor of 1.5 only applicable to the lenses that were on the old camera ? or is that EF lenses and should I be looking for EFS lenses to get the best results ?
What is the difference between EF & EFS lenses |
I think the factor is 1.6 and gives the apparent focal length of any lens on the digital body, when compared to the same lens on a 35mm film body. So a 50mm appears to be 80mm, a 300 appears to be 480 ( and my 17mm acts like a 27 @rse! ).
The newer digital canons have a smaller mirror set further back into the body and can take the EFS lenses. These are physically longer and so can use smaller rear lens elements and so are a bit cheaper to make. But they wont fit all cameras- my 30D takes them but my 10D won't.
HTH
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