Reviews and Problems with Canon EF 70-200mm f/4L IS USM
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Canon EF 70-200mm f/4L IS USM Review
What Digital Camera
20 February 2013
Summary: Overall, the f/4 lens clearly plays second fiddle on paper but it is a very easy lens to carry and to use. Though it is expensive it is only roughly half that of the f/2.8 version, based on Canons SRPs.
Canon EF 70-200mm f/4 USM L IS (full format) - Review / Test Report
20 March 2010
Conclusion: The Canon EF 70-200mm f/4 USM L IS is an amazing lens. It is truly outstanding when used on APS-C DSLRs and it suffers only from a minor quality deteriorations on full format DSLRs. The resolution figures are easily on prime levels throughout the whole range and even at max. aperture.
Conclusion: The Canon EF 70-200mm f/4 USM L IS is capable to deliver a near-flawless performance is all categories. The resolution figures are very impressive even at max. aperture. Distortions, vignetting and CAs are usually nothing to worry about either.
Canon EF 70-200mm f/4 USM L IS - Review / Test Report
29 September 2007
Conclusion: Every now and then EOS, the goddess of mercy, seems to speak to the Canon lens designers and this time they listened carefully. The Canon EF 70-200mm f/4 USM L IS may well be the very best tele zoom on the market today - it is certainly the best Canon zoom lens tested locally to date.