Lens Simulator
FRFR
English Deutsch Français Italiano Español Nederlands Polski

Canon RF 50mm F1.2 L USM vs. Canon RF 50mm F1.4 L VCM

Ray-traced side by side from their optical patents at a 2.0 m upper-body portrait distance: compare how the Canon RF 50mm F1.2 L USM (41.7 mm entrance pupil) and Canon RF 50mm F1.4 L VCM (35.7 mm entrance pupil) differ in background blur size, edge bokeh, and depth of field.

Chargement de la scène…
0%

Comparaison portrait en un coup d’œil (cadrage buste)

Optical & Portrait Metric Canon RF 50mm F1.2 L USM Canon RF 50mm F1.4 L VCM What It Means in Practice
Upper-Body Working Distance 2.01 m 2.01 m Identical working distance—both frame an upper-body portrait from the exact same spot.
Effective Focal Length (Breathing) 50.8 mm (+1.6%) 49.3 mm (-1.5%) At 2.0 m, Canon RF 50mm F1.2 L USM frames like a 50.8 mm lens while Canon RF 50mm F1.4 L VCM frames like a 49.3 mm lens.
Depth of Field (Sharp Zone) 17 cm (1.93 m – 2.10 m) 20 cm (1.92 m – 2.12 m) The Canon RF 50mm F1.2 L USM has a 14% thinner focus zone (17 cm vs. 20 cm)—requiring more precise eye focus.
Entrance Pupil Diameter 41.7 mm (f/1.2) 35.7 mm (f/1.4) Distant background blur discs are 17% larger on the Canon RF 50mm F1.2 L USM.
Minimum Focus Distance 0.4 m 0.4 m Both lenses share the same 0.4 m close-focus limit.
Patent Prescription US20190265441A1 (15/9) US20250251576A1 (15/11) Published optical prescriptions traced in the 3D simulator above.

Questions

Which blurs the background more, Canon RF 50mm F1.2 L USM or Canon RF 50mm F1.4 L VCM?

At the same subject framing, distant background blur scales with the entrance pupil diameter (focal length ÷ f-number). Canon RF 50mm F1.2 L USM at f/1.2 has a 41.7 mm entrance pupil, while Canon RF 50mm F1.4 L VCM at f/1.4 has a 35.7 mm entrance pupil.

How does working distance differ between Canon RF 50mm F1.2 L USM and Canon RF 50mm F1.4 L VCM?

For an upper-body portrait, Canon RF 50mm F1.2 L USM stands 2.01 m from the subject (sharp zone 17 cm, from 1.93 m to 2.10 m), whereas Canon RF 50mm F1.4 L VCM stands 2.01 m away (sharp zone 20 cm, from 1.92 m to 2.12 m).

How do the optical designs of Canon RF 50mm F1.2 L USM and Canon RF 50mm F1.4 L VCM compare?

Canon RF 50mm F1.2 L USM uses 15 elements in 9 groups (US20190265441A1, effective focal length 50.8 mm at portrait distance). Canon RF 50mm F1.4 L VCM uses 15 elements in 11 groups (US20250251576A1, effective focal length 49.3 mm).

Explorer chaque objectif en détail

Comparaisons d’objectifs

Toutes les comparaisons

Voir aussi: profondeur de champ, bokeh, facteur de recadrage, compression.