The RF 15-35mm f/2.8L offers some improvements over its EF predecessor, the most notable being the inclusion of image stabilization. Lens construction consists of three aspherical and two UD lens elements, plus advanced optical coatings and a 9-blade aperture for rounded bokeh (out of focus areas).
Other features include a lens control ring for controlling certain aspects of the lens or camera functionality, coatings to help prevent glare and coating and weather-sealing along with “L series” build quality.
From PhotographyBlog review :
If you’re a professional photographer who is consistently shooting subjects such as landscapes and architecture, and crucially you’ve got the funds for an expensive like this, RF 15-35mm f/2.8 L IS USM is a bit of a no-brainer. As it goes to a more “standard” focal length of 35mm, it’s also a worth considering as a general or walk around option, too. […]
To that end, the lens is a slightly awkward match in terms of ergonomics with the Canon EOS RP too. If you intend to use this lens, especially for long periods of time, it might be worth investing additionally in the Extension Grip to make for a better balance and overall experience.
From The-Digital-Picture summary :
Always of utmost importance is image quality and this lens delivers excellence in this regard. Some peripheral shading and moderate pincushion distortion at the long end of the focal length range (your portrait clients may find this slimming) are the primary opportunities remaining. The incredible-performing image stabilization system will help realize impressive image quality even when shooting handheld. […]
The price tag is not low, but the value and versatility of this lens are high. I expect the Canon RF 15-35mm F2.8 L IS USM Lens to join my kit someday soon.
From DigitalCameraWorld verdict :
Canon wants to set high standards with its RF lenses, and the RF 15-35mm f/2.8L IS USM largely meets our expectations. It combines fast focusing, adequate sharpness across the frame and no visible distortion when looking at real world images. With its fast, constant f/2.8 aperture and 5-stop Image Stabilizer, it’s one of the three key lenses any pro will look for in a professional camera system.
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