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Canon 16-35mm f2.8L II - not sharp.

Started May 6, 2014 | Discussions thread
peterharvey Contributing Member • Posts: 930
Re: Canon 16-35mm f2.8L II , and Nikon 14-24
3

Another general rule of thumb is that, the longer the zoom range, eg 3x zoom, 4x zoom, 6x zoom, etc, the more compromised the optical quality.

In this situation, the very best optical quality generally comes in a single focal length prime lens, with no zoom ability at all.

For example, notice how your Canon 16-35 has 2.19x zoom range, while the Nikkor 14-24 has been deliberately compromised at only 1.71x zoom range? That narrower zoom range gives greater sharpness!

Likewise, in the smaller APS-C sensors, a Canon EF-S 10-22 2.2x zoom f3.5-4.5 is neither as sharp, nor as bright as a Tokina 11-16 1.45x zoom f2.8, however the 10-22 has a much wider zoom range than the Tokina ultra wide.

It all boils down to lens physics and compromise...

 peterharvey's gear list:peterharvey's gear list
Sony RX100 Canon EOS 70D Canon EF-S 10-22mm F3.5-4.5 USM Canon EF-S 17-55mm f/2.8 IS USM Canon EF 100mm f/2.8 Macro USM +7 more
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