A Review of the Canon RF 15-35mm f/2.8L IS USM Lens

The Canon RF 15-35mm f/2.8L IS USM is the company's professional mirrorless wide angle zoom, making it a versatile lens for a variety of applications. This great video review takes a look at what you can expect from the lens in practice. 

Coming to you from Dustin Abbott, this excellent video review takes a look at the Canon RF 15-35mm f/2.8L IS USM lens. The 15-35mm f/2.8L is Canon's professional mirrorless wide angle zoom, and it brings with it an array of features, including:

  • Two UD (Ultra-Low Dispersion) elements for reduced chromatic aberrations and increased clarity
  • Three aspherical elements for reduced distortion and increased sharpness
  • Air-Sphere Coating for reduced flares and ghosting and increased contrast
  • Optical Image Stabilizer with up to five stops of compensation
  • Nano USM focusing system for quick and quiet autofocus suitable for both photo and video work
  • Customizable Control Ring
  • Protective Fluorine Coating
  • Dust- and moisture-resistant design
  • Rounded nine-blade diaphragm for smoother bokeh

Along with the lens' specs, it is also important to note that its widest focal length is 15mm, as opposed to the standard 16-35mm Canon has used for decades. At such focal lengths, a difference of a single millimeter should not be overlooked, as it will offer a significantly wider angle of view than a 16mm lens. Altogether, the 15-35mm f/2.8 looks like a respectable performer that should suit a variety of genres ranging from landscapes to events well. Check out the video above for Abbott's full thoughts. 

Alex Cooke's picture

Alex Cooke is a Cleveland-based portrait, events, and landscape photographer. He holds an M.S. in Applied Mathematics and a doctorate in Music Composition. He is also an avid equestrian.

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5 Comments

The amount of vignetting in that lens is just absurd, especially considering how expansive it is.
Why would you buy an f/2.8 lens when most of the frame gets so dark that with a given exposure time you are actually getting more light with the old 16-35 f/4? Because that's how bad it is, go check sites with measurements, the 15-35 loses so much light that the 16-35 f/4 has better t stops on most of the frame, even when you compare the two at the same aperture!
If you need f/2.8 unless you are doing it solely for the bokeh (then maybe you shouldn't be using a UWA lens?) it's because you need to capture light, and if your lens doesn't actually capture it then it's bad.

I absolutely agree. Their most recent EF 16-35mm f/2.8L lens also has such strong vignetting.

While I appreciate that Canon was not able to reduce the vignetting while also keeping the lens free of distortion, I do still wonder why this is not talked about more.

Seems to me that the 2.8 zoom lenses in the UWA range will always suffer. I have the 16-35 f4 and ir is an excellent performer.
I am just waiting for the 10-24 f4 in RF mount. All the AOV and no issue with speed.

I think the problem comes from the zoom range rather than the wide focal, there are many 14-24 f/2.8 (the old Nikon, both the new fantastic, especailly for the price, Sigma Art and even the ridiculous 12-24 f/2.8 Sony) that prove you can get away with really high quality and not much vignetting, even with compact lenses on mirrorless.
The 16-35 f/4 is probably the best wide angle Canon ever made all things considered, definitely it's the best zoom.

Nice lens, despite the vignette that is very visible, the sharpness is incredible. The soft color is typically L lenses with air sphere coating. The price is too expensive with such vignetting, unless you bought it in gray market, it's actually ok.