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Old Mar 10, 2007, 2:43 AM   #1
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I have been mulling over about buying a dSLR, and it is great to read so many opinions here.

I have an old 35mm EOS and have two EF lenses the 75 - 300 and 28 - 80.

Will these lenses work well with the Canon 400D (XTi)? I would be happy to change horses to say Nikon or Pentax, but if these lenses work, then that could be the swaying factor!


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Old Mar 10, 2007, 6:53 AM   #2
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Any EF lens will work with the canon DSLRs
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Old Mar 10, 2007, 8:04 AM   #3
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They will work.

But, they'll behave a little differently on most (but, not all) Canon DSLR models.

The sensor in most of the lower priced DSLR models [well, lower priced compared to the pro line anyway - :-)], is smaller than 35mm film.

As a result of this difference in sensor size, you'll have a narrower angle of view (more apparent magnification) for any given focal length. That means your lenses will appear to be longer on most DSLR models.

With a model like the Canon Rebel XT, XTi, EOS-20D, EOS-30D, your lenses will appear to be 60% longer.

So, a 50mm lens would behave more like an 80mm lens (50mm x 1.6 = 80mm). Just multiply the focal lengths of lenses by 1.6x to see what lens on a 35mm camera you'd need for the same angle of view.

Your 28-80mm would behave more like a 45-128mm when used on a Canon DSLR with a smaller sensor.

Note that Canon also has some models with larger sensors. For example, the EOS-5D has a sensor that's the same size as 35mm film. So, you'd have the same angle of view with your lenses on one as you would on a 35mm camera.

The narrower angle of view (more apparent magnification) that you'd have on most DSLR models is great if you want a longer lens. But, it can leave you lacking on the wide end (since your lenses will appear to be longer on most DSLR models).

So, it's probably a good idea to get a wider lens, too (with one of the models that uses a smaller sensor than film). That's one reason the kit lenses often included with DSLR models usually start out at around 17 or 18mm (so that you've still got a lens that gives you a wider angle of view).


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Old Mar 10, 2007, 8:13 AM   #4
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Sounds like it could be a reason to buy the canon body plus a lens to get the wider angles then.

<edited> hang on - the 28 - 80 has a plastic mount - it is the original lens with the EOS 500.

Maybe I am not so convinced it is worth sticking with Canon, the search continues! Bring on the Nikon D80 and Pentax K10D...:?
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