Nikon NIKKOR Z 50mm f/1.2 S vs Nikon NIKKOR Z 58mm f/0.95 S Noct — Porównanie optycznego ray-tracingu i bokeh

Porównanie portretowe w skrócie (popiersie)

Optical & Portrait Metric	Nikon NIKKOR Z 50mm f/1.2 S	Nikon NIKKOR Z 58mm f/0.95 S Noct	What It Means in Practice
Upper-Body Working Distance	2.01 m	2.33 m	The Nikon NIKKOR Z 58mm f/0.95 S Noct requires 0.3 m more room behind you for the same subject size.
Effective Focal Length (Breathing)	49.0 mm (-1.9%)	59.9 mm (+3.2%)	Nikon NIKKOR Z 50mm f/1.2 S frames like 49.0 mm (-1.9%) at 2.0 m; Nikon NIKKOR Z 58mm f/0.95 S Noct frames like 59.9 mm (+3.2%) at 2.3 m.
Depth of Field (Sharp Zone)	17 cm (1.93 m – 2.10 m)	13 cm (2.27 m – 2.40 m)	The Nikon NIKKOR Z 58mm f/0.95 S Noct has a 21% thinner focus zone (17 cm vs. 13 cm)—requiring more precise eye focus.
Entrance Pupil Diameter	41.7 mm (f/1.2)	61.1 mm (f/0.95)	Distant background blur discs are 47% larger on the Nikon NIKKOR Z 58mm f/0.95 S Noct.
Minimum Focus Distance	0.45 m	0.5 m	Nikon NIKKOR Z 50mm f/1.2 S focuses 5 cm closer (0.45 m vs. 0.5 m) for tighter close-ups.
Patent Prescription	WO2021241230A1 (17/15)	WO2019229849A1 (17/10)	Published optical prescriptions traced in the 3D simulator above.

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Pytania

Which blurs the background more, Nikon NIKKOR Z 50mm f/1.2 S or Nikon NIKKOR Z 58mm f/0.95 S Noct?

At the same subject framing, distant background blur scales with the entrance pupil diameter (focal length ÷ f-number). Nikon NIKKOR Z 50mm f/1.2 S at f/1.2 has a 41.7 mm entrance pupil, while Nikon NIKKOR Z 58mm f/0.95 S Noct at f/0.95 has a 61.1 mm entrance pupil.

How does working distance differ between Nikon NIKKOR Z 50mm f/1.2 S and Nikon NIKKOR Z 58mm f/0.95 S Noct?

For an upper-body portrait, Nikon NIKKOR Z 50mm f/1.2 S stands 2.01 m from the subject (sharp zone 17 cm, from 1.93 m to 2.10 m), whereas Nikon NIKKOR Z 58mm f/0.95 S Noct stands 2.33 m away (sharp zone 13 cm, from 2.27 m to 2.40 m).

How do the optical designs of Nikon NIKKOR Z 50mm f/1.2 S and Nikon NIKKOR Z 58mm f/0.95 S Noct compare?

Nikon NIKKOR Z 50mm f/1.2 S uses 17 elements in 15 groups (WO2021241230A1, effective focal length 49.0 mm at portrait distance). Nikon NIKKOR Z 58mm f/0.95 S Noct uses 17 elements in 10 groups (WO2019229849A1, effective focal length 59.9 mm).

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