>>2911904>disregard cucks who can't focus camerasSeriously, what dark magic is it you clowns believe goes into focusing a goddamned lense?
It projects light onto the reflex mirror, which directs a portion of that light onto a CCD array which acts as a rangefinder.
The computer in the camera sends a signal to actuate the lenses' focusing motor until it hits focus.
Done.
If it misses focus, it's because you failed to focus, by pointing the camera at the wrong thing, or the lense failed to stop quickly enough in response to the motor signal being cut. Because you did a one-shot AF from huge defocus and you're shooting the damned thing wide open to start with because you're a massive noob.
The smegmas are as sharp as they are because they don't compromise the optical design to preserve af speed (which is to say making the focusing ground a 12 gram plastic element), but at the same time tey don't compromise AF speed by making the helicoid the lense runs in 3km long, like in the 85L or a macro.
If you want tack sharp wide open shots, use live view, or confirm your damned focus with a second hit on the AF-ON button once you're in range.
You don't get your cake and eat it too with a $1000 lense kids.
Use it with some thought and care.
