Looking for thoughts on focus accuracy

Never tried this on my gear, so figured I would just for ****s and giggles. I may have done it wrong considering I didn't tripod any of this.

They seem to be ok no?

17-55 2.8 1/100th ISO 400 Flash

I think that chart causes more problems than it solves in general. If I suspect a focus problem with a lens, I use a different method to check.

If you were happy with the lens before just carry on using it these charts show problems that are not there more often than not.

JeffreyG wrote in post #13450675
I think that chart causes more problems than it solves in general. If I suspect a focus problem with a lens, I use a different method to check.

And that method would be??

I don't think you can judge your lenses without having the camera be perfectly still. Try setting it on a counter and somehow angle the chart to fit the position of the camera.

Hollywoodgt wrote in post #13451404
And that method would be??

Oh, I set up the camera on a tripod pointed at three cereal boxes. I make sure the lens is at least 50X the focal length from the target box in the center. I place the other two lenses a little closer and farther from the camera than the center box.

The center AF point overlays the middle cereal box, and since it is on a large, flat, high contrast surface we can expect very accurate AF performance.

Then I focus the camera with AF, click on live-view and take a 10X look at the boxes. If everything is dead on, the middle box will be sharp and the other two will be equally soft. I repeat a few times for consistancy.

This method has always worked well for me, and can be done even on a body without live-view by actually taking shots and reviewing on a computer. That's a lot more tedius though.

Do not review shots on the LCD after the fact. Live-view is not the same thing as the tiny jpeg thumbnail review shot.