When holding the lens, you'll notice that it is slightly heavier than the 17-40mm. But is the difference in price worth the upgrade? In terms of optical performance & image quality, the Canon 16-35mm F4.0 is superior to the 17-40mm F4.0, especially when it comes to corner sharpness. Other than that it is the best Canon wide-angle zoom lenses for landscape photography for beginners. On the other hand, corner sharpness improves a lot when zooming in towards 20mm, which is still wide enough for most motives.Ĭenter sharpness is good throughout the entire zoom range, no matter which aperture you chose, which is a bonus.įinally, the lens shows modest barrel distortion at 17mm (2%) and 1.4% of pincushion distortion at 40mm. Indeed there are some slight issues with the Canon 17-40mm F4, as the corners are slightly soft at 17mm. At a 2.4x zoom factor at a moderate price point, you would expect significant optical flaws. It feels quite sturdy & robost and will last for a long time even when used under harsh conditions. The lens weighs 1.1 pounds and is fully weather-sealed. Another attractive low-budget option for your full-frame system might be the Canon 17-40mm F4.0, which offers a constant aperture at a reasonable price.
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