Anyone else have AF problems with the 24mm STM lens?

seri_art wrote:

I really didn't try that. I only tested it in fairly low light, similar to what I would find at an indoor party where it would be a good "social" lens. As I said, my 40mm STM lens has no problem with AF in that same situation.

ZX11 wrote:

How well does it focus on well lit subjects with high shutter speeds?

You should try in better lighting.  The focusing accuracy at very shallow DOF's (to test focus accuracy) should improve.  Also, I noticed the non stabilized lenses really needed fast shutter speeds to get things sharp like a stabilized lens can.  Handheld sharpness with non-stabilized lenses is a matter of opinion on what is acceptable motion blur.

My 50mm f1.4 would have problems indoors low light.  Just where I thought a f1.4 lens would excel.  It could get nice photos but it doesn't always work that way.  Contrast just falls off too fast.  I think my lenses chromatic distortion issues makes the problem with missing fine focus worse.  Can a camera achieve fine focus, by contrast methods, if the lens is throwing color fringing into the mix?  I think that is another reason the UD elements in the "L" lenses are worth the money (if you have it).  How is the chromatic distortion on the 24mm?

So, auto focusing techniques and limitations is another skill a photographer needs.  And why the 7D mkII various focusing settings seem pretty cool.