3rd party lenss compatibility with Canon SLR

Kho King · 26th December 2003

Anybody have experience of incompatibility of 3rd party lenses (Sigma, Tamron, Tokina) with Canon SLR? If yes, can you list out what's the lens and what camera u using?

I have used my friend's EOS 50 + Sigma 28-200mm before, the camera seems NOT wanting to focus...you press the shutter...then after 1s then only it starts to focus...then focus also very slow slow. Initially (when the lens was still new) there's no problem.

Since then I lost confident in 3rd party Canon mount lenses...

I think reserve engineering still not done perfectly on Canon secret.

mpenza · 26th December 2003

older sigma lenses need to be rechipped to work with the newer bodies. tamron and tokina seems to be less problematic though. newer sigma lenses work well too.

clive · 26th December 2003

last time i tried a tokina ATX pro lens on eos3.
the AF feels like scratching a fork on a blackboard. thats a pity...considering that ATXpro lenses are solidly built

26th December 2003	#1
Kho King Senior Member Join Date: Jan 2002 Posts: 2,799	3rd party lenss compatibility with Canon SLR Anybody have experience of incompatibility of 3rd party lenses (Sigma, Tamron, Tokina) with Canon SLR? If yes, can you list out what's the lens and what camera u using? I have used my friend's EOS 50 + Sigma 28-200mm before, the camera seems NOT wanting to focus...you press the shutter...then after 1s then only it starts to focus...then focus also very slow slow. Initially (when the lens was still new) there's no problem. Since then I lost confident in 3rd party Canon mount lenses... I think reserve engineering still not done perfectly on Canon secret. __________________ KOH KHO KING http://ShaShinKi.com ~ Malaysia Online Camera Shop! :cool:

26th December 2003	#2
mpenza Moderator Join Date: Jan 2002 Location: New York City Posts: 13,397	older sigma lenses need to be rechipped to work with the newer bodies. tamron and tokina seems to be less problematic though. newer sigma lenses work well too.

26th December 2003	#3
clive Senior Member Join Date: Oct 2002 Posts: 2,573	last time i tried a tokina ATX pro lens on eos3. the AF feels like scratching a fork on a blackboard. thats a pity...considering that ATXpro lenses are solidly built