Reviews and Problems with Canon EF 300mm f/4L IS USM
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Value for money 7
Overall quality 6
Build quality 10
Canon EF 300mm f/4 USM L IS - Full Format Review / Test
6 July 2008
Conclusion: In the marketplace the Canon EF 300mm f/4 USM L IS is probably suffering from the fact that it is "only" a 300mm lens. There are numerous zoom lenses with such a tele setting out including the stiff in-house competition from the similar priced EF 100-400mm f/4.5-5.6 USM L IS and the new EF 70-300mm f/4-5.6 USM L IS. It is capable of delivering sharp results specifically in the image center.