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The Canon EF 20-35mm f/2.8 L may be old, even ancient by consumer electronics standards but it’s still capable to deliver high quality images specifically regarding resolution and low vignetting (on APS-C DSLRs) whereas distortions, field curvature and CAs are a little on the high side. Thanks to L-grade build quality it feels very solid but expect that time has taken its toll from a ~15 years old lens. If you can find a sample in decent condition it is still worth a deeper look but remember that it is probably beyond repair in case of malfunctions due to rare spare parts. READ FULL REVIEW
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