Canon RF 85mm f/1.2 Real-World Tests: Bokeh, AF, and Sharpness

If you shoot weddings or portraits, you already know how an 85mm changes the look of a frame. The right 85mm gives you crisp eyes, soft backgrounds, and the working distance to keep moments natural.

Coming to you from Shane Long Photography, this thorough video compares the Canon RF 85mm f/1.2 L USM lens to the EF 85mm f/1.4 IS, with side-by-side tests on an EOS R5. You see the bokeh difference immediately at f/1.2 versus f/1.4, not just in size but in how clean the highlight edges look. The RF version renders larger, smoother discs with fewer hard edges, which helps faces pop without nervous background texture. Long also notes the RF seems slightly tighter in framing than the EF at the same distance, which can add to background compression and perceived blur.

At equal apertures around f/2, the gap narrows. Highlight size looks almost identical, and while the RF still edges out the EF in sharpness and contrast, it’s not enough to justify the price if you rarely shoot wider than f/2. Where the RF 85mm f/1.2 L USM separates itself is wide open. Long’s samples at f/1.2 show remarkable micro-contrast, clean color, and fine detail with minimal purple fringing, even in tricky light. If you buy this lens for the look at f/1.2, you’ll get it.

Autofocus is a big part of the story. Long shows eye detection on the R5 nailing focus at f/1.2, even with a subject walking or running straight at the camera. He stresses this would have been risky with the old EF 85mm f/1.2, but with the RF 85mm paired to the R5, the lens pulls large glass elements fast and locks reliably. He also tests how quickly the system jumps from defocus to face lock, and it snaps in without hesitation. That opens up candid movement at f/1.2 that used to be impractical.

Vignetting looks manageable and is easy to correct with a profile, and the R5’s recovery keeps edges clean. Flare can show artifacts when pointed into the sun, which you can use or avoid depending on taste. Size and handling will matter to you if you work long days. The RF 85mm f/1.2 is big and heavy, but Long got used to it after two months and says the balance at the mount feels fine once you support the lens. He does mention the AF/MF switch is a bit too easy to bump and that RF rear caps require precise alignment, which slows lens changes if you’re not looking

Key Specs

• Focal Length: 85mm
• Aperture: Maximum f/1.2, Minimum f/16
• Lens Format Coverage: Full frame
• Minimum Focus Distance: 2.79' / 85 cm
• Magnification: 0.12x (1:8 macro reproduction ratio)
• Optical Design: 13 elements in 9 groups
• Aperture/Iris Blades: 9, rounded
• Focus Type: Autofocus
• Image Stabilization: No
• Filter Size: 82mm (front)
• Dimensions: ø 4.06 x L 4.62 in / ø 103.2 x L 117.3 mm
• Weight: 2.63 lb / 1,195 g

If you’re torn between the RF 50mm f/1.2 L USM and the RF 85mm f/1.2 L USM, Long suggests the 50mm first for versatility. The 85mm brings more compression, stronger subject isolation, and that “studio outside” feel when you keep a little distance. For weddings, he uses 85mm during getting-ready to clean up messy rooms with shallow depth of field, during ceremonies for alternate angles and the kiss if he’s close, and for portraits to mix perspectives and punch up the bokeh. With the R5’s IBIS, he shows handheld shots staying sharp down to about 1/10 second when subjects are still, which helps in dark receptions.

You’ll also see sample portraits that show why people pay for this lens. Eyes are tack sharp at f/1.2 while backgrounds melt away. Seniors and headshots benefit a lot from that separation and 3D pop. If you’re budget-conscious, the RF 85mm f/2 Macro IS STM gives you background blur with macro utility, but the look at f/1.2 isn’t something you can fake. Check out the video above for the full rundown from Long.