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EF-S lens
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Re: EF-S lens
This part cannot be stressed enough, do these mods "At Your Own Risk!" The afore mentioned Sigma and Tamron lenses are not EF-S mount, they are EF mount lenses with a smaller image circle. They have the same "back focus" as other EF mount lenses. EF-S lenses have a "short back focus" (that's what the "S" stands for) and… -
Re: EF-S lens
Not normally. Why do you ask? Is there a particular need? Come to think of it I believe someone did use a EF-S 60mm, f2.8 Macro to work on a full-frame body using a (modified?) extension tube. Otherwise you risk damaging the mirror and/or lens trying to use EF-S lenses (by modifying the mount) on a FF or crop 1.3x body. -
Re: EF-S lens
Like pyry said, it has been done, mainly to get EF-S lenses to fit on the older 10D (a crop body introduced prior to the EF-S line). There's no point in doing that to fit one on a 5D. I have a return question: why the move to a 5D? What is it that the 20D isn't getting done now? You say most of your lenses are EF-S, so a… -
Re: EF-S lens
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Re: EF-S lens
EF-S lenses don't produce an image circle large enough to cover the 5D sensor - they don't need to and can thus be made a bit smaller and lighter. So even if you could get the mount modified and didn't break the mirror, you'd still get the mother of all vignetting effects. You can google for several examples of kit lens… -
Re: EF-S lens
As Ziggy also said - be careful. I had a look in a camera shop at a few other EF-S lenses. The 10-22 sticks out way too far and the back of the lens WILL hit the mirror. The 60 macro might be ok... The guy in the camera shop also said that as far as he knows, some lenses - like the 17 - 85 are OK but ONLY ON THE… -
Re: EF-S lens
Yes! At least some lenses will fit... I was told by someone that some of the Sigma and Tokina EF-S mount lenses would and I was wondering if the Canon EF-S would. I have a 40D with the EF-S 17-85 mm f4/5.6 and was wondering if it would fit on my EOS3 film camera... I found that what prevents the 17-85 fitting on the EOS3… -
Re: EF-S lens
Gotcha. The short answer is that by design, Canon EF-S lenses can only be used on Canon crop 1.6x cameras. Your strategy moving forward depends on whether you intend to keep the Canon 20D, a great camera in its own right, or if you will be selling the 20D? My suggestion is to keep the 20D, to leverage what you already… -
Re: EF-S lens
To echo Ziggy, it can be done with an extension tube as some blogger shared before. Take Ziggy's advise to keep the 20D since it has no resale value at all. As what pyry said, the vignetting is the major problem to use EF-S on full frame body. It is not advisable to DIY the rubber ring or modify the lens by yourself. Why…
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