Originally posted by yeatzee I dont know about the FA, but my F focuses EXTREMELY fast
Great lens I absolutely adore mine.
The FA135 focuses very fast as well (and I suspect is equal in terms of AF speed with the almost identical F135).
Originally posted by TOUGEFC Yeah, you have me thinking again, by looking at your sig I can see which one you have and which you obviously sold
I wouldn't read too much into the lenses I have at any given moment. They change almost daily (and if not daily, certainly weekly
).
The fact that I don't have the Tamron 70-200 any more really has nothing to do with the FA135. I went through quite a few fast/long zooms trying to figure out which ones I wanted to keep. This included the Sigma 70-200/2.8, Sigma 100-300/4, Tamron 70-200/2.8, FA*80-200/2.8, DA*50-135/2.8 and DA*60-250/4. In the end I kept the pair of DA* zooms and sold the rest (not all at once, it was a progressive accumulation and sell-off). In truth, with the other fast primes I have, I could probably ditch the 50-135 as well and just go with the 60-250. That said, the Tamron 70-200 is outstanding optically and isn't that far off from the range of the 60-250 (plus it's a stop faster). On the down side, the AF is a bit nosier and the build isn't quite as good (IMO).
But this isn't about the 60-250 vs 70-200
As I said before, and as other have eluded to, the choice between the 135 and 70-200 is much more about prime vs zoom (size vs versatility) than subtle differences in IQ (or even differences in PF in high contrast situations).
Perhaps the real question is how upset will your wife be if you get both and will she be over it in a couple days (or are we talking months/years).