« on: June 20, 2014, 02:41:38 PM »
Its too bad that lens reviewers are not able to test autofocus. I realize that testing it would open a can of worms, since its possibly different on every camera. Still, they could have canon calibrate their bodies, and determine a way to measure focus times and accuracy. FoCal does a good job of checking accuracy and consistency, and by using a standard setup, different lenses could be compared on the test camera. If a lens was acting up, it could be returned to the manufacturer for repair and retested.
I think that the results might open some eyes for all lens models. Lens autofocus can be pretty bad, and timing will vary all over the place depending on the distance, starting point, lighting, and even the subject. That's probably why no one does it.
Some do, at least up to a point, such as lenstip:
But it seems pretty clear that they don't cover the range of contexts you refer to in your second paragraph. I've no idea whether anyone else comes closer.