Reviews and Problems with Canon EF 28-300mm f/3.5-5.6L IS USM
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Value for money 7
Overall quality 5
Build quality 8
Canon EF 28-300mm f/3.5-5.6 USM L IS (full format) - Review / Test Report
6 February 2010
Conclusion: The Canon EF 28-300mm f/3.5-5.6 USM L IS is an impressive piece of engineering. However, its immense zoom range doesn't come without compromises - especially on a high resolution full format DSLR.
Canon EF 28-300mm f/3.5-5.6 USM L IS - Review / Test Report
22 February 2008
Conclusion: The Canon EF 28-300mm f/3.5-5.6 USM L IS is an impressive extreme range zoom. The optical quality is on a very high though not exceptional level. The resolution figures are generally very good without any major flaws. Vignetting, CAs and even distortions are very well under control.