tamron 28-75 autofocus question

[neo_xeno]

i'm wondering how fast is the autofocus on this lens? is it as fast as USM? could i use it for sports?

[chops]

i'm wondering how fast is the autofocus on this lens? is it as fast as USM? could i use it for sports?

I would say it's about equal to Canon's USM, like the 24-85 or 75-300.

[Quinn Porter]

I use this Tamron, and can say that it is much slower than Canon's USM lenses. As for sports, it depends. This lens is definitely fast enough to shoot golf. Hockey, not so good.

[L Pagan]

i'm wondering how fast is the autofocus on this lens? is it as fast as USM? could i use it for sports?slow

[chops]

I don't know what's wrong with all of your guys Tamrons, but mine is rather quick at focusing. I definately wouldn't call it slow!

[Persian-Rice]

The Tamron is quick, but its not very quick.
I would say that its slower then the usm or atleast slower then L's. I assume L usm is the same as any other usm, I have never owned a non L usm............

I still think the speed is pretty sufficient, its not instant like its Canon brother, but its good.

[Adam Hicks]

Man you guys should try the Tamron 28-105 f2.8. An AMAZINGLY sharp lens from everything I've seen printed (16x20 and larger from a D1S) but talk about the worlds slowest focusing lens. I played with one for a while and I think it was as heavy as my 100-400 and just slow as molasses. Tamron can make better lenses than Sigma if they want to. I just wish they would more often!

[neo_xeno]

thanks for the info guys. would u guys say it's faster then non USM canon lens, like the 50 1.8?

[Toogy]

I would say it focuses about as quick as my 1.8, maybe slightly faster. Much quiter than the 1.8 for sure.
It is also quieter than the Sigma I sold to get this lens (18-125)

[chops]

I stood out front of our store the other day, put my 10D in continuous shot mode, and tracked several cars coming down the road at 45mph. Not a single one of the 30 something shots came out out of focus. They were all sharp! So I gues it focuses fast enough.

[DamienB]

It's definitely slower than USM lenses on my D60. I'd say AF speed was similar to the Sigma 15-30, and noticeably slower than the Canon 28-135 IS.