I had the same question in my mind since long time . I had both lenses and shooting the D7000 too .
After i bought the 10-17 i had never used again the 10.5 for the only reason of the advantages of having a zoom capabilities on my camera, which can help a lot to change compositions of
certains situations/subjects .
I think that the 10.5 is a little bit sharper and produce less chromatic aberration than the 10-17 but the advantage of being a zoom put the 10-17 as my top choice , specially for the kind of wide angle photos that i made most of the time : reefscapes,big animals and caves.
For static subjects , like wrecks i all probably prefer the 10.5 over the 10-17
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