comparison of 85mm

Question:
When comparing the 85 1.8, 85 1.2 and the sigma 85 1.4
which one has acceptible AF speeds?

I have read that many people here use the 85 1.8 for auditorium sports (e.g. bball etc) and it got me thinking about the relative speed of the 85 1.4? I understad that the 85 1.2 is slow to AF - though it sure has the power to produce some gorgeous "pop"...it would not be the best choice for faster moving activity.

If the sigma has acceptible AF responsiveness _ i may wait for the upgraded one (hoping that there will be one) so as to be able to use the dock with it for the fine tuning.

thanks for any insights.
p.s. I don't necessarily need it in the next couple of months

i have been comparing several lenses these past 2 weeks before i made my move

the AF on the 85 1.8 is really fast, faster than others

In terms of AF speed, 85 1.8 > Sigma 85 > 85L.

macaron95 wrote in post #16428504
i have been comparing several lenses these past 2 weeks before i made my move

the AF on the 85 1.8 is really fast, faster than others

thanks for that. did you try the 1.4?

kin2son wrote in post #16428511
In terms of AF speed, 85 1.8 > Sigma 85 > 85L.

Thanks. i was wondering however... if the 1.4 is fast enough to catch both portraits as well as some faster activity....

If you're shooting sports or other fast moving objects then the canon 85 f/ 1.8 would be your best choice of these three. The auto focus and speed makes it deadly accurate when shooting with it on a body such as a 7d.

Although I didn't find the 1.8 blazingly faster than the Sigma, just slightly so on a 5DIII, it was noticeably faster than the 85 f/1.2L on the 5DIII.

I found the Sigma fast enough..for portraits, kids..etc. Sports…yes..I think you could shoot sports, but more glass in Sigma than Canon 1.8…so the latter would have less glass to move in shorter time, so..I'd look at 1.8 if I were doing sports and portraits.

i tried them all and the 85 1.8 was the fastest

kin2son wrote in post #16428511
In terms of AF speed, 85 1.8 > Sigma 85 > 85L.

Same in terms of price