Reviews and Problems with Canon EF 100-400mm f/4.5-5.6L IS USM
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Canon EF 100-400mm f/4.5-5.6L IS USM Lens Review
SLR Lens and Camera Reviews
23 April 2011
Excerpt: Canon EF 100-400mm f/4.5-5.6L IS USM is the longest telephoto zoom lens currently manufactured by Canon. First released back in late 1998, the lens currently retails around US$1,600 (as of October 2010) and is typically used for wild-life and sports photography. On APS-C type cameras the field of view of this lens resembles that of a 160-640mm lens on a full-frame camera.
Conclusion: A popular lens that that is superficially well built but has a few quirks and an Achilles heel in the bearing problem. It is probably worth buying any extended warranty that is offered with it. If you get a good one it is well worth hanging on to but be aware of the known problems when buying second-hand where there is a healthy market.
Pros: Good contrast and colour., Good AF speed that is quiet in use., Nice focal range at acceptable 3:1 ratio, Holds its value well
Cons: Awkward manual focus at longer focal lengths, Known problem with bearings giving up the ghost, Wear in the bearings may well cause deterioration in performance., May drag dust into the sensor.
Conclusion: About 10 years ago I looked at an EF 100-400/4.5-5.6L IS and I wasn't too impressed. It was good, but it wasn't as good as a 300/4L. Since many users had reported very good results with their 100-400IS lenses I thought I should give it another chance. Well, I can say that the 100-400L I tested here was very good.
Excerpt: The Canon EF 100-400mm f/4.5-5.6 L IS USM Lens has an excellent focal length range that includes the longest focal length found in a Canon zoom lens - 400mm. This long focal length and focal length range combine with very good image and build quality to make the 100-400 L one of the most popular serious wildlife and sports lenses Canon sells.
Conclusion: If the Canon 100-400 mm USM IS was equipped with the second generation stabilization system, allowing to work with 4 EV efficiency, and a bit better coatings we would pronounce it to be an ideal lens – for many applications even unique. I think the rumours about its withdrawal from the market and launching its successor are very real.
Cons: weak performance against bright light,, image stabilization not efficient by today’s standards
Canon EF 100-400mm f/4.5-5.6 USM L IS - Full Format Review / Test Report
8 November 2008
Conclusion: The Canon EF 100-400mm f/4.5-5.6 USM L IS is almost a boring lens but in a positive sense. It shows no extreme weaknesses nor strengths. You will find sharper lenses - primes that is - but it is very sharp for a zoom lens, especially considering its 400mm, and that's throughout the range at all relevant aperture settings. As such it is e.g.
Canon EF 100-400mm f/4.5-5.6 USM L IS - Review / Test Report
21 May 2008
Conclusion: The Canon EF 100-400mm f/4.5-5.6 USM L IS is a very good performer with few weaknesses ... that's assuming you get a good sample - the first tested sample was mediocre whereas the second one performed very fine. The resolution of the lens is on a very high level throughout the zoom range with only a marginal performance penalty at 400mm. Vignetting, distortions and CAs aren't really field relevant on an APS-C DSLR.
Summary: Gdyby Canon 100-400 mm USM IS miał stabilizację drugiej generacji,
pozwalającą pracować z wydajnością 4 EV i trochę lepsze powłoki,
mielibyśmy obiektyw w zasadzie wzorowy - dla wielu zastosowań idealny.
Myślę, że plotki krążące o jego wycofaniu ze sprzedaży i szybkim
pojawieniu się następcy są bardzo realne. Mielibyśmy wtedy ruch bardzo
podobny do L-ki 70-200 f/4.0.
Pros: wysoka jakość wykonania,, świetna lub bardzo dobra jakość obrazu w centrum kadru w całym zakresie przysłon i ogniskowych,, bardzo dobre zachowanie na brzegu kadru,, mała aberracja chromatyczna,, znikoma dystorsja,, mała koma,, niewielki astygmatyzm,, małe winietowanie w całym zakresie ogniskowych,, szybki, cichy i celny autofokus,, bogate wyposażenie standardowe.
Cons: słaba praca pod ostre światło,, jak na dzisiejsze standardy mało wydajna stabilizacja obrazu.