Reviews and Problems with Canon EF 300mm f/4L IS USM
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Value for money 8
Overall quality 8
Build quality 10
Canon EF 300mm f/4 USM L IS - Review / Test Report
3 August 2008
Conclusion: The EF 300mm f/4 USM L IS is an excellent lens both regarding build and optical quality. The naked lens performed near-flawless both in the lab as well as in the field where the IS helped in many situations.