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Canon 17-40 weird white dots inside front element

Started Sep 1, 2017 | Discussions thread
OldSchoolNewSchool Senior Member • Posts: 1,403
Re: Canon 17-40 weird white dots inside front element

Andy01 wrote:

Weird - never seen anything like it. Can you return it ?

As a side note, When I was looking for a wider angle lens a few years ago, and tested several in a large shop with my own camera and card and compared images, the 17-40L was without a doubt the worse of the bunch - probably on a par with the 17-85mm I had at the time. The Canon EF-S 17-55, 16-35L f4 and even Sigma 17-50 f2.8 & Tamron were all better / sharper. I was very disappointed given that it was a L lens - noticeably worse than my 24-105L at similar focal lengths.

Colin

My 17-40mm struggled with my EOS3 film camera. Corner fuzziness worked its way well into the center of the image at most apertures. I can't imagine using the lens with a high-megapixel digital camera. Why it was ever an L lens is a mystery to me.

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My state of confusion has turned into a circle of confusion.

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