17-28/2.8 IQ Advice

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ahaslett Veteran Member • Posts: 8,171
17-28/2.8 IQ Advice

I've been using a 28-75/2.8 for a couple of years and am very happy with it.  Just bought a 17-28/2.8 after reading reviews and looking at sample images.

I'm aware of its strengths and weaknesses as a lens.  Did some test grass lawn shots, manually focused on the label of the pot in the middle.

On a 32" 4k monitor, without zooming in, the area of good resolution in the middle at f2.8 seems a little smaller than I expected.  At f11, I expected the edges (not the corners) to look a little better.

I shared some images with Tamron, who were very helpful but their feedback was that the lens looks in spec.  They did offer to facilitate an exchange, but there isn't much point if the lens is typical.

For those of you with this lens, do these look as you would expect?

I also did a point source LED light test and the lens looks well-centered.

17mm f2.8

17mm f11

28mm f2.8

28mm f11

Many thanks for your help.


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