Canon 50mm f/0.95 vs. Canon RF 50mm F1.2 L USM

Ray-traced side by side from their optical patents at a 2.0 m upper-body portrait distance: compare how the Canon 50mm f/0.95 (52.6 mm entrance pupil) and Canon RF 50mm F1.2 L USM (41.7 mm entrance pupil) differ in background blur size, edge bokeh, and depth of field.

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Comparación de retrato de un vistazo (medio cuerpo)

Optical & Portrait Metric Canon 50mm f/0.95 Canon RF 50mm F1.2 L USM 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) 51.8 mm (+3.5%) 50.8 mm (+1.6%) At 2.0 m, Canon 50mm f/0.95 frames like a 51.8 mm lens while Canon RF 50mm F1.2 L USM frames like a 50.8 mm lens.
Depth of Field (Sharp Zone) 14 cm (1.95 m – 2.08 m) 17 cm (1.93 m – 2.10 m) The Canon 50mm f/0.95 has a 21% thinner focus zone (14 cm vs. 17 cm)—requiring more precise eye focus.
Entrance Pupil Diameter 52.6 mm (f/0.95) 41.7 mm (f/1.2) Distant background blur discs are 26% larger on the Canon 50mm f/0.95.
Minimum Focus Distance 1 m 0.4 m Canon RF 50mm F1.2 L USM focuses 60 cm closer (1 m vs. 0.4 m) for tighter close-ups.
Patent Prescription US2836102A (7/5) US20190265441A1 (15/9) Published optical prescriptions traced in the 3D simulator above.

Preguntas

Which blurs the background more, Canon 50mm f/0.95 or Canon RF 50mm F1.2 L USM?

At the same subject framing, distant background blur scales with the entrance pupil diameter (focal length ÷ f-number). Canon 50mm f/0.95 at f/0.95 has a 52.6 mm entrance pupil, while Canon RF 50mm F1.2 L USM at f/1.2 has a 41.7 mm entrance pupil.

How does working distance differ between Canon 50mm f/0.95 and Canon RF 50mm F1.2 L USM?

For an upper-body portrait, Canon 50mm f/0.95 stands 2.01 m from the subject (sharp zone 14 cm, from 1.95 m to 2.08 m), whereas Canon RF 50mm F1.2 L USM stands 2.01 m away (sharp zone 17 cm, from 1.93 m to 2.10 m).

How do the optical designs of Canon 50mm f/0.95 and Canon RF 50mm F1.2 L USM compare?

Canon 50mm f/0.95 uses 7 elements in 5 groups (US2836102A, effective focal length 51.8 mm at portrait distance). Canon RF 50mm F1.2 L USM uses 15 elements in 9 groups (US20190265441A1, effective focal length 50.8 mm).

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Ver también: profundidad de campo, bokeh, factor de recorte, compresión.