标变镜头典范 佳能EF 24-70mm f/4L IS USM试用 ·前言：灿烂晴天，说走就走在高楼林立的都市中待久了，就总有一种想逃脱的冲动。 在连续数天的阴雨天后，北京终于迎来了一个灿烂的晴天，在这样一个难得的天气里，我们没有理由再呆坐在家中，拿起一台相机说走 Sigma 35mm F1.4 DG HSM Art | Canon RF 28-70mm f/2 L USM | Canon EF 24-70mm f/4L IS USM. Overview: Canon RF 28-70mm f/2 L USM . It goes without saying that the Canon RF 28-70mm f/2 L USM is a great lens. It has a fast maximum aperture of f/2, which provides good low-light performance and can create a shallow depth of field. Best 24-70mm Lenses Compared updated 19 April 2018. Canon 24-70mm/2.8 L II vs Zeiss 24-70/4 vs Sony 16-50 OSS 18 September 2015. Ultra-Ultrawides compared 26 March 2015 . Canon 300mm Lenses Compared October 2014. Premium 50mm lenses compared September 2014. Canon Ultrawide Lens Sharpness Comparison 16 July 2014 . Canon 10-18mm IS vs. 16-35mm f Back in September Canon introduced the EOS 6D, its entry into the nascent 'compact, lightweight' The EF 24-70mm f/4L IS USM is the perfect zoom to complement full-frame DSLRs like the EOS 6D. With 2 aspheric and 2 UD elements, the EF 24-70mm f/4L IS USM delivers high-quality images with excellent detail throughout the entire zoom range. A 9-blade circular diaphragm delivers beautiful, soft backgrounds. The term ‘kit lens’ is misleading, though, as the Canon RF 24-105mm f/4L IS USM bears Canon’s L designation and promises professional-level performance. At the time of publishing this article, the only other RF zoom lens is the bulky and expensive Canon RF 28-70mm f/2L lens, which is a much more specialized offering. Canon 24-70mm f/4L ($849) Category: Travel/portrait Weight: 21.2 oz. Image stabilization: Yes What we like: Better optical performance than the 24-105mm f/4. What we don’t: Lacking the bokeh of the 24-70mm f/2.8. If you want the coveted 24-70mm focal length range without breaking the $1,000 barrier, the Canon 24-70mm f/4 is the way to go. Meeting the ever-increasing demands on image quality that digital photography brings, the redesigned EF 24-70mm f/2.8L II USM is the latest update to the acclaimed L-Series of EF optics, re-establishing a new standard for superb optics, high-end durable construction, and performance in professional zoom lenses. A standard focal length zoom lens uMTI.

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