Canon 17-40 mm L F4.0 lens

Started Jun 19, 2011 | Discussions thread
Phil1 Senior Member • Posts: 1,364
Re: Canon 17-40 mm L F4.0 lens corrections

DXO claims to 'correct' lens defects, including lack of corner sharpness, the latter presumably by applying local sharpening. I use it quite a lot & it seems really good.

It is fairly intuitive to use & I seem to recall you can download a trial version.

However, I've not done any detailed testing - does anyone know of any reliable comparative reviews?


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