The Tamron is sharp but has a terrible barrel distortion.
The FA100-300 has a "reputation" on the group. It's been nicknamed "softie".
I'm not intimate with the others, but Sigma APO lenses have a good
reputation, esp on this group.
Collin
--- Original Message ---
From: Alexandre A. P. Suaide
--------------------------------------------------------------------------------
Hello,
my brother would like to buy a 70(100)-300 F4(4.5)-5.6 <snip>
1. Tamrom AF 70-300 F/4-5.6 LD
2. Sigma 70-300 F/4-5.6 APO macro super
3. Sigma 70-300 F/4-5.6 DL macro
4. Pentax FA (or F) 100-300 F/4.5-5.6
5. Pentax FA 80-320 F/4.5-5.6
***************
"The accumulation of all powers legislative,
executive and judiciary in the same hands . . .
may justly be pronounced the very definition of tyranny."
--James Madison, Federalist 47
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