Grandadmag
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Sorry about this lame question but will a sigma ex 150-500mm lens fit my sons canon eos 500d.
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Grandadmag
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Thanks,the add says its a canon fit,sigma 150-500mm f/5-6.3 dg os hsm it's from Wex photographic,thanks for your help.
Phil V
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Why wouldn't it AF?
Just so you know for next time, all EF mount lenses Auto Focus apart from some very specialist ones, which are designed with no AF. (MP E65, TSE lenses and lenses from manufacturers who never designed the lens to AF, like Zeiss and Samyang)
When AF was introduced, most manufacturers tried to use their existing lens mount and fitted motors into the body of their cameras, which seemed the simplest route so you could mix them about. OTOH Canon designed a completely new electronic mount, so all EF lenses have motors built in.
And Canon shooters never have the issue of 'will this lens work with this body? It might meter but it won't AF, it won't AF or meter etc'.
MatBin
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Why wouldn't it AF?
Just so you know for next time, all EF mount lenses Auto Focus apart from some very specialist ones, which are designed with no AF. (MP E65, TSE lenses and lenses from manufacturers who never designed the lens to AF, like Zeiss and Samyang)
When AF was introduced, most manufacturers tried to use their existing lens mount and fitted motors into the body of their cameras, which seemed the simplest route so you could mix them about. OTOH Canon designed a completely new electronic mount, so all EF lenses have motors built in.
And Canon shooters never have the issue of 'will this lens work with this body? It might meter but it won't AF, it won't AF or meter etc'.
Not absolutely true, sorry, but
Canon use EF & Ef-s lens mounts, so EF will fit anything but EF-s wont fit EF (Full frame cameras or the 1 series).
AF well - it will work if the lens doesnt have an F8 minimum aperture, (or fitted with a teleconverter that makes it F8 minimum) then it will only work on 1 Series (& 5D3) cameras (if they have had the firmware upgrade on the latest models) and that will be centre point only.
Just to make it more complex - some "old" Sigmas wont work at all.
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Phil V
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Flightphoto
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He won't have trouble with the quoted Sig but the older type had the ERR01 issue when using AF as the 'chip' wouldn't support compatibility on digital EOS bodies, however it is still possible to visit a Sigma specialist who can update the code on the AF chip (people say a new chip added but that's rubbish, the chip is just reprogrammed)
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Not absolutely true either i'm afraid - in moderate light many effective f8 lenses will AF fine on xxD and xxxD models. If you are using a canon tc you may have to tape over certain contacts , but my old 100-400 used to Af no bother on a 20D with a 1.4tc
You've got a point on the old sigmas , that was a chip compatibility thing, but its not germane to the OPs question as than lens isn't old enough to be affected
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SThornton
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Why wouldn't it AF?
Just so you know for next time, all EF mount lenses Auto Focus apart from some very specialist ones, which are designed with no AF. (MP E65, TSE lenses and lenses from manufacturers who never designed the lens to AF, like Zeiss and Samyang)
When AF was introduced, most manufacturers tried to use their existing lens mount and fitted motors into the body of their cameras, which seemed the simplest route so you could mix them about. OTOH Canon designed a completely new electronic mount, so all EF lenses have motors built in.
And Canon shooters never have the issue of 'will this lens work with this body? It might meter but it won't AF, it won't AF or meter etc'.
Sorry, I was under the impression that canon were the same as Nikon as in not all bodies have AF motors in-built and therefore you had to get lenses with the motor to be able to AF.
Phil V
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It's a common misconception, as I said, Canon upset a lot of people when they went with a new mount for AF. And surprised a lot when they introduced EFs