Originally posted by ChopperCharles Problem is, even at f4 or f5.6 the Tamron is still missing focus, where my 100mm macro was dead on.
I was under the impression the macro was MF? Apples to oranges in that case. Otherwise, I'd say you simply don't have a well-controlled test with a large enough sample size to really make such a determination, and are instead seeing what you have already convinced yourself you will see.
If you *do* have such a well-controlled test, though, feel free to post pictures showing exactly where you focused and the method you used to focus, and then crops that demonstrate focus was anywhere but there. Then post the same for the macro. I'm still betting it will turn out the problem is something rather different than what you are describing. It's just a matter of common sense - if you have it adjusted so that it focuses correctly in tests but fails in "real life", there is no way the lens will suddenly start behaving just because the shooting conditions got more difficult. It's got to be a technique issue. Unless the tests were improperly performed, so your adjustments actually threw it out of whack.
Quote: Also, the imgwide tag is NOT in the "go advanced" post menu.
It used to be - it was the second to last icon on the right. Now that one is apparently labeled "FANCYBOX", which is a new one on me.
Still, the point is, there was no reason to post such large images in the first place. A resized version to show context, then a 100% of the focus area would be more appropriate.