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Ease of Use
Weighing 515g & measuring 96cm in length, the Canon EF-S 18-135mm f/3.5-5.6 IS USM is a pretty small & light zoom lens given the 7.5x range that it offers. Being an EF-S lens, you can only use it on a Canon EOS APS-C toàn thân like the 80D that we tested it with, for a 29-216mm equivalent angle of view.
As you would expect from such an inexpensive lens, build unique is adequate rather than outstanding. The Canon EF-S 18-135mm f/3.5-5.6 IS USM feels fairly solid in your hand, despite the all-plastic construction, although at least the mount is made of metal. The focus and zoom rings have a ridged, rubberised grip band that assists with the operation.
The Canon EF-S 18-135mm f/3.5-5.6 IS USM boasts Image Stabilisation which Canon claims offers an advantage of up khổng lồ 4 f-stops over lenses without a stabilizer. This is activated via the On/Off switch on the side of the lens. If the camera toàn thân supports it, Canon"s IS technology is also able to lớn detect intentional panning movement and automatically switch from the Normal IS mode to the Panning IS mode.
The Canon EF-S 18-135mm f/3.5-5.6 IS USM is also compatible with the new power nguồn Zoom Adapter PZ-E1, an optional accessory designed lớn enable smooth, fingertip zoom control when shooting movies. The adapter even provides Wi-Fi remote control of the zoom operation via the Canon Camera Connect app. Unfortunately Canon didn"t supply one for review, so we can"t bình luận on how well they work together.
The final control on the lens barrel is a focus mode switch with the usual AF/MF settings. Lưu ý that this lens offers full-time manual focusing even when AF is selected.
The lens doesn"t ship with either a lens hood or a protective bag. It accepts 67mm filters.
Focal Range
At the 18mm focal length the angle of view is 64° 30".
At the 135mm focal length the angle of view is 9° 30".
Focusing
The Canon EF-S 18-135mm f/3.5-5.6 IS USM lens has an adequately sized narrow focusing ring, but there are no hard stops at either ends of the range, making it more difficult to lớn set focus at infinity. Manual override of the autofocusing system is available at any time. Polariser users should be pleased that the 67mm filter thread doesn"t rotate on focus.
When it comes to auto-focusing, the Canon EF-S 18-135mm f/3.5-5.6 IS USM zoom is a very quick performer, only taking about 0.1 seconds lớn lock onto the subject when mounted on the Canon EOS 80D that we tested it with. We didn"t experience too much "hunting" though, either in good or bad light, with the lens accurately focusing almost all of the time. It"s also a virtually silent performer too, thanks lớn the built-in Nano USM (Ultra Sonic Motor), which makes this lens very well-suited to clip recording và more candid photography.
Chromatic Aberrations
Chromatic aberrations, typically seen as purple or xanh fringes along contrasty edges, are not particularly well controlled with this lens, appearing in quite a lot of our test shots. The examples below show the worst-case scenario.
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Light Fall-off
With the lens wide open at f/3.5 at 18mm, you can see some light fall-off in the corners, although Canon"s latest APS-C bodies can automatically correct for it when shooting JPEGs. There"s also some obvious barrel distortion that disappears by 35mm.
Macro
The Canon EF-S 18-135mm f/3.5-5.6 IS USM is not really a macro lens, but the close-focus point is a useful 39cm from the film/sensor plane, và Canon quotes a maximum reproduction ratio of 0.28x for the lens at the 135mm focal length. The following example illustrates how close you can get lớn the subject, in this case a CompactFlash card.
Bokeh
Bokeh is a word used for the out-of-focus areas of a photograph, và is usually described in qualitative terms, such as smooth / creamy / harsh etc. The Canon EF-S 18-135mm f/3.5-5.6 IS USM has an iris diaphragm with 7 rounded blades for a pleasing rendering of the out-of-focus highlights. Below you"ll find some examples, but you are also encouraged to kiểm tra out our sample images.
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Sharpness
In order khổng lồ show you how sharp this lens is, we are providing 100% crops on the following pages.