Canon 15-85 vs 18-135 STM, What am I missing?

Started Feb 8, 2013 | Discussions thread
Thorbard Contributing Member • Posts: 689
Re: Canon 15-85 vs 18-135 STM, What am I missing?

Looking at 's test charts (here) the 15-85mm is much sharper all the way to the corners wide open at all focal lengths, while they're more indistinguishable at f8. The 15-85 has less distortion too.

The 15-85 is obviously wider, but lacks the same telephoto options. USM is generally a better focusing mechanism for stills photography (STM is designed with video and contrast-detect in mind).

Other than that I guess build quality might be an issue?

 Thorbard's gear list:Thorbard's gear list
Canon EOS 7D Canon PowerShot G15 Canon EF 85mm f/1.8 USM Canon EF-S 15-85mm f/3.5-5.6 IS USM Canon EF 40mm f/2.8 STM +2 more
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