Viltrox AF 50mm f/2 vs Viltrox 50mm f/1.8 vs Canon RF 50mm f/1.8

Compare the Viltrox AF 50mm f/2 Full Frame Lens with the Viltrox Nikon Z and Canon RF 50mm f/1.8 options. Mount choice comes first.

L-mount, Nikon Z and Canon RF come first

The Viltrox AF 50mm f/2 Full Frame Lens for L-Mount costs $199 and is available to order. Its main selling point is straightforward: a 50mm autofocus prime with an f/2 maximum aperture and a bare-lens weight of approximately 205g.

The Viltrox 50mm f/1.8 Full Frame Lens for Nikon Z-Mount costs $359 and is in stock. The Canon RF 50mm f/1.8 STM Lens costs $199.99 and is also in stock.

These are not three native-mount alternatives for the same camera. They serve different systems. For an existing camera owner, the mount settles the first decision. For someone comparing systems or maintaining more than one kit, the useful differences are carrying weight, physical controls and close-up capability, not just the aperture printed on the barrel.

50mm lens specifications side by side

This table compares specifications available for all three lenses. Canon’s stabilization figure specifically requires an EOS R-series camera with in-body stabilization.

The shared 50mm focal length makes this a useful comparison of standard primes. It does not make their mounts interchangeable, and the construction figures are not image-quality scores.

f/2 versus f/1.8 is a modest exposure difference

The two f/1.8 lenses have roughly a one-third-stop aperture advantage over the f/2 lens. In practical exposure terms, that allows a modest adjustment to shutter speed or ISO. It is useful at the margin, but it is not a large gap in maximum aperture.

At matching subject distance and sensor format, f/1.8 also allows slightly shallower depth of field than f/2. Both Viltrox lenses have nine diaphragm blades; Canon uses seven. Blade count influences the aperture opening as the lens stops down, but it does not establish which lens produces more pleasing background blur.

Canon also stops down to f/22, while both Viltrox lenses stop at f/16. That gives the Canon additional stopping-down range for controlling exposure or increasing depth of field. Smaller apertures can also introduce diffraction, so f/22 is an option rather than an automatic route to more detail.

The different element and group counts describe the optical designs. More glass does not, by itself, make a lens sharper.

Carrying weight, filter sizes and lens controls

At approximately 205g bare, the L-mount Viltrox weighs roughly half as much as the 390g Nikon Z Viltrox. That is a meaningful carrying difference for a prime intended to stay on the camera. The Canon is lighter still at 160g, so the f/2 Viltrox is not the lightest lens in this comparison.

Filter sizes are different throughout: 58mm for the L-mount Viltrox, 55mm for the Nikon Z Viltrox and 43mm for the Canon. Existing filters sized for one lens are not a direct thread-on match for the other two. That matters if a polarizer or neutral-density filter is already part of the kit.

The Nikon Z Viltrox has a dedicated manual aperture ring with an Auto position. It also provides full-time manual focus override and internal focusing. Canon supplies a control ring for direct setting changes. Those are more specific handling distinctions than the shared STM autofocus motor type.

The L-mount Viltrox supports full Exif metadata transmission and camera shooting modes through its electronic contacts. Its small weight does not mean giving up that communication with the camera.

Close-up framing and stabilization need separate attention

The Canon has the clearest close-up advantage: a 0.98-foot minimum focusing distance and 0.25x maximum magnification. The L-mount Viltrox reaches 0.11x at a minimum focus distance of 20 inches; the Nikon Z Viltrox reaches 0.1x and focuses down to 21.7 inches.

Maximum magnification tells how large a subject can be projected onto the sensor. Canon’s 0.25x means quarter-life-size reproduction, compared with roughly one-tenth life-size for the Viltrox lenses. For small objects and tighter detail photographs, that difference is more consequential than the small aperture gap. The two Viltrox lenses are much closer to each other in this respect.

Both Viltrox lenses are specified without image stabilization. Canon rates its lens-and-camera combination at up to 7 stops of shake correction with EOS R-series bodies that have in-body stabilization. That condition matters; the figure is not a promise for every RF-mount camera.

Stabilization can reduce blur from camera movement at slower shutter speeds. It does not stop a moving subject, so photographing people in motion still calls for a shutter speed appropriate to their movement.

Who should choose each 50mm lens

Choose the Viltrox AF 50mm f/2 for a lightweight L-mount kit. Its $199 price and approximately 205g bare weight suit an L-mount owner seeking a standard autofocus prime without much carrying burden. The small aperture difference from f/1.8 is less important than getting the correct mount.

Choose the Viltrox 50mm f/1.8 for Nikon Z if a dedicated aperture ring matters. The manual ring with an Auto position gives photographers a direct way to set aperture on the lens. At $359 and 390g, it asks for more money and carrying capacity than the other lenses here.

Choose the Canon RF 50mm f/1.8 STM for an RF kit that needs a light standard prime with useful close-up reach. Its 160g weight and 0.25x magnification are the strongest practical distinctions. Owners of EOS R-series bodies with in-body stabilization can also make use of Canon’s stated shake-correction support.

Prices at Unique Photo

• Viltrox AF 50mm f/2 Full Frame Lens for L-Mount: $199.00
• Viltrox AF 20mm f/2.8 Full Frame Lens for L-Mount: $176.00
• Viltrox AF 40mm f/2.5 Full Frame Lens for L-Mount: $168.00
• Viltrox 50mm f/1.8 Full Frame Lens for Nikon Z-Mount: $359.00
• Canon RF 50mm f/1.8 STM Lens: $199.99

Prices as of November 13, 2026. Browse more: Mirrorless Lenses, Viltrox at Unique Photo.

Related reading: Viltrox AF 50mm f/2 Full Frame Lens Launch: Specs and Price.

Frequently asked questions

What mount does the Viltrox AF 50mm f/2 use?

This version uses L-mount and is designed for full-frame mirrorless cameras.

Is the Viltrox AF 50mm f/2 lighter than the Viltrox 50mm f/1.8 for Nikon Z?

Yes. Viltrox lists approximately 205g for the bare f/2 lens, compared with 390g for the Nikon Z f/1.8 lens.

Which of these 50mm lenses focuses closest?

The Canon RF 50mm f/1.8 STM focuses down to 0.98 feet / 0.30m. It also has the highest maximum magnification of the three at 0.25x.

Does the Canon RF 50mm f/1.8 STM support image stabilization?

Canon rates shake correction at up to 7 stops when paired with EOS R-series cameras that have in-body stabilization.