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02-23-2010, 02:32 PM   #1
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Tamron 70-200mm f2.8 on K10D

Hello folks,

I am new to this forum (well, have been reading for quite a while). I finally raised some funds for a new 70-200mm f2.8 and wondering which one to buy. I just spent most of my business hours reading the posts about Tamron vs Sigma (and vs Pentax 50-135), so I guess I'm pretty well informed about the pros and cons of each, especially the slow and sometimes inaccurate AF issue of the Tamron. So my question is how slow is Tamron specifically on the K10D compared to other bodies. I shoot mainly my 18 mo old boy (moving constantly at lightspeed), so fast focusing is high priority, but I'm also attracted to reportedly higher IQ of the Tamron. I heard that it's not really all that slow on bigger bodies like K10D, K20D, or K-7 having beefier in-body motor, but would it be good enough for fast moving subjects indoors?

Last edited by aquashin; 02-24-2010 at 12:00 PM.
02-24-2010, 11:58 AM   #2
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Join Date: Feb 2010
Posts: 16
Original Poster

I need your input on the autofocus performance on the K10D body...

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70-200mm, bodies, f2.8, k-mount, k10d, pentax lens, slr lens, tamron, tamron 70-200mm f2.8, vs
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