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Canon 70-200 f4L IS unusable at f4

Started Oct 5, 2017 | Discussions thread
Doug_PS
Doug_PS Contributing Member • Posts: 812
Re: Canon 70-200 f4L IS unusable at f4

I own this lens and it's very sharp at F/4. I had to apply a bit of AFMA to really dial in the sharpness but it wasn't far off at all right out of the box.

It's possible that yours has some kind of issue or that the AFMA that you applied is contributing to the softness. Below is an example of how sharp this lens is wide open at f/4 (minimal sharpening applied). If anything, I need to soften it up to show less detail for this type of shot.

70-200 f/4 IS: @ f/4 200mm

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