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Get information and user reviews for this lens from Amazon: Canon EF 100-300mm f/4.5-5.6 USM Telephoto Zoom Lens for Canon SLR Cameras
Photo Zone:
In terms of optical performance the Canon EF 100-300mm f/4.5-5.6 USM is about in line with other consumer grade tele zoom lenses. The resolution figures are excellent and 100mm but unsurprisingly tMORE’s a penalty at longer focal length specifically at 300mm @ f/5.6. At 200mm and more so at 300mm you should stop down a little to lift the resolution and contrast level. Distortions and vignetting are usually nothing to worry about whereas CAs are a significant although largely correctable weakness at 200mm and 300mm. On the positive side the tested sample showed a very good center (lens alignment) which is quite rare for a lens in this class. The mechanical quality is a step up from the typical kit zoom – this is most obvious in the IF (internal focusing) design and the very fast ring-type USM drive. Unless you can afford the (substantially better) EF 70-300mm f/4-5.6 USM IS the EF 100-300mm f/4.5-5.6 USM is a remains good choice in the sub-300€/US$ tele zoom lens league. Just don’t expect any wonders at longer focal lengths. READ FULL REVIEW
Other Canon 100-300mm f/4.5-5.6 USM EF Reviews
SLR Gear:
While this lens may have been very capable in its day, it’s fairly easy to argue that technology has marched on and left this lens in its wake; as a 100-135mm lens it works very well, but it shows soft results with noticeable chromatic aberration at anything more telephoto than that. A good lens to have in a collection if you find a good deal, but There are other, better options to actively seek out. READ FULL REVIEW
Digital Picture:
The Canon EF 100-300mm f/4.5-5.6 USM Lens is a mid-grade long telephoto zoom lens. the Canon EF 100-300mm f/4.5-5.6 USM Lens is built reasonably well. The finish does not appear modern, but the build quality is decent. A metal lens mount shows that the 100-300 is not a bottom-of-the-line lens. The Canon EF 100-300mm f/4.5-5.6 USM Lens provides reasonable optical quality in a wide focal length range with fast Ring USM autofocus for a reasonable price. READ FULL REVIEW