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Sigma 24-70mm f2.8 EX Aspherical DG DF

24_70EX_med_1_
Review Date: Jan 18, 2007 Recommend? yes | Price paid: $220.00 | Rating: 8 

 
Pros: relatively cheap, good build, sharp and contrasty enough for my needs
Cons:
loud AF, not an internal zoom, 82mm filter size

I've owned 2 different copies of the newer Macro version and both were quite sharp wide open at both ends. Build is quite solid and since both my copies were purchased used from the B&S boards, I never had a problem with a tight zoom ring.

AF is fast even in low-light, just have to make sure that you focus on something with contrast or it will hunt but most lenses will do that so I don't think it's a limitation of this lens in particular. No front or back focusing issues either. AF is loud though. I wish they would add HSM to this lens, would make it so much nicer.

I sold my first one cause I replaced it with the Canon 24-105L but recently picked up another one at a nobrainer price cause I decided I still needed a zoom in this range for relatively low light indoor shots. Only other ping against it is the large 82mm filter size. Good filters for this size ain't cheap unfortunately.

But for its range and capabilities I think it's a fantastic value. Sigma does have an issue with quality control though but once you're able to get a decent copy (or have one recalibrated by Sigma), you won't be disappointed.