Sigma Vs Tammy 70-200 F2.8

[robinc2005]

I heard from a700 user saying that sigma always have this kinda problem. a700 will chewed the gear.

But i have a question, if i use a550 for this sigma or tammy 70-200mm, will it be very slow on focusing for tammy?

 

[shutterkhai]

I heard from a700 user saying that sigma always have this kinda problem. a700 will chewed the gear.

But i have a question, if i use a550 for this sigma or tammy 70-200mm, will it be very slow on focusing for tammy?

are they using the old or newer HSM II version? i guess focusing speed here would really depend on the kind of shooting that you will be doing. from reviews, it seems that for static shoot, i think both AF will be considerably about the same. what seems to be an issue is when your subject is moving in which tamron seems to be slower..

 

[davtse]

I heard from a700 user saying that sigma always have this kinda problem. a700 will chewed the gear.

But i have a question, if i use a550 for this sigma or tammy 70-200mm, will it be very slow on focusing for tammy?

i'm using this combination at the moment, doesnt seem to be a problem in good light. will test more when i have the opportunity to go for some test shoots.

 

[witpz]

i bought the sigma as the tammy was too slow on the long end when i tried it on another system. in alpha sys it might be faster though. the sigma iq is generally ok, but it is soft at the long end wide