Nikon AI-S Zoom-Nikkor 25-50mm F/4

Specifications01

MountNIKON F

Focal length25-50mm

Max aperturef/4

TypeZoom

Release year1981

Weight600 g

Filter size72 mm

Min focus distance0.6 m

Aperture blades7

Optical elements11

Groups10

AutofocusNo

StabilizationNo

Aperture controlAperture ring (Manual settings + Auto Exposure setting)

Lens hoodHK-7 - Clamp-on round

TeleconvertersNikon Teleconverter TC-200→ 50-100mm F/8 Nikon Teleconverter TC-201→ 50-100mm F/8

EraFilm era

Production statusDiscontinued

Additional Info02

Lens TypeStandard zoom lens

Summary02

Nikon F-mount AI-S Zoom-Nikkor 25–50mm f/4 standard zoom lens with a fixed maximum aperture of f/4. Intended for general-purpose photography across wide-to-normal focal lengths.

AI-assisted summary — verify against linked sources

Specifications from thelensdb

Where can this lens be adapted?

The Nikon F mount has a flange distance of 46.5 mm. A plain adapter fits a camera whose flange distance is at least 1.46 mm shorter. How lens adapters work

Nikon G lenses have no aperture ring: use an adapter with an aperture lever. Nikon E lenses set the aperture electronically: use an electronic adapter.

Sony EAdapter · 28.5 mm
Canon RFAdapter · 26.5 mm
Nikon ZAdapter · 30.5 mm
Fujifilm XAdapter · 28.8 mm
L-MountAdapter · 26.5 mm
Micro Four ThirdsAdapter · 27.25 mm
Fujifilm G (GFX)Adapter · 19.8 mm
Covers full-frame: it can vignette on a medium format sensor.
Canon EF-MAdapter · 28.5 mm
Canon EFAdapter · 2.5 mm
A rear element that sticks out can hit the camera mirror.
Nikon FNative

Sources03

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Other Mounts03

No alternate mounts are indexed for this family yet.