Originally posted by chhayanat In fact, many SMCP-M telephoto lenses focus beyond infinity as marked on the lens.
There's an easy answer that's worked well for a long time.
PRE-FOCUS.
Sports events, auto racing, air shows -- makes no difference. If you know WHERE you want to compose your shot (and you're just hoping for good luck if you don't) pre-focus on that spot, or another spot at the same relative distance, and wait until the action arrives. You can even pan through the shoot-point. Sort'a like prehistoric catch-in-focus, eh? Heck, you can even pre-view the results of the test shot on the LED for focus and exposure.
Surreptitious candids? Imagine an arc that passes through your intended subject. Set exposure, select a deceptively innocent target on the arc to focus on, swing and shoot. Really sneaky? Don't have your eye to the VF as you shot -- have faith in your setup.
Photographers managed just fine before auto focus. I suspect there were more keepers too since thoughtful planning usually trumps reliance on ambiguous AF targets.
H2