The EF 17-40mm f/4L USM lens
is a wide-angle lens
made by Canon
The lens has an EF mount to work with the EOS line of cameras.
- This article contains information originally taken from the Wikipedia article "Canon_EF_17-40mm_lens". You can see the authorship and revision history of that article here.
- At canon's website:
- At dpreview.com:
- At fredmiranda.com:
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