Does the Sony E 15mm f/1.4 G fit the Sony a1 II?

Yes, it mounts — both are Sony E. But the Sony E 15mm f/1.4 G is an APS-C lens on a full-frame Sony a1 II, so the body uses only the centre of its sensor (crop mode, lower resolution). The 15mm then frames like 23mm.

Last verified 2026-06-21 · Sony E mount · Sony APS-C lens · Sony full-frame body · 1.5× crop applied

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Sony E 15mm F1.4 G APS-C Large Aperture Wide Angle G Lens (SEL15F14G)

Check the Sony E 15mm f/1.4 G price on Amazon →

What the Sony E 15mm f/1.4 G gives you on the Sony a1 II

Field of view: 15mm — frames like 23mm on this body (1.5× crop)
Maximum aperture: f/1.4
Type: prime
Where it lands: ultra-wide on the Sony a1 II (8–23mm equivalent) — 25 of the 103 Sony E lenses reach this range here, and at f/1.4 this is the brightest of them
Tagged for: Wide-angle Vlogging Street Low-light

What "crop mode" means here

The Sony E 15mm f/1.4 G is designed to cover an APS-C sensor, and the Sony a1 II has a full-frame one. The lens mounts and works, but the body reads only the centre of its sensor to match the lens — a lower-resolution file than the Sony a1 II produces with a full-frame lens. Framing follows the crop: 15mm looks like 23mm.

If you want the Sony a1 II's full resolution, use a full-frame Sony E lens instead — all 76 of them are listed here.

Other Sony E lenses that use the Sony a1 II's full-frame sensor

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Focal	Lens	Buy	Max aperture	Type	Coverage	Best for
24-70mm	Sigma 24-70mm f/2.8 DG DN II Art	Amazon →	f/2.8	zoom	Full-frame	Pro standard zoom Everyday Budget pro
24mm	Sigma 24mm f/1.4 DG DN Art	Amazon →	f/1.4	prime	Full-frame	Wide-angle Astrophotography Street Low-light
24-105mm	Sony FE 24-105mm f/4 G OSS	Amazon →	f/4	zoom	Full-frame	Everyday Travel Wedding & event
24-70mm	Sony FE 24-70mm f/2.8 GM II	Amazon →	f/2.8	zoom	Full-frame	Pro standard zoom Everyday Wedding & event
24mm	Sony FE 24mm f/1.4 GM	Amazon →	f/1.4	prime	Full-frame	Wide-angle Astrophotography Low-light
24mm	Sony FE 24mm f/2.8 G	Amazon →	f/2.8	prime	Full-frame	Wide-angle Street Travel Everyday
24mm	Viltrox AF 24mm f/1.8	Amazon →	f/1.8	prime	Full-frame	Wide-angle Street Everyday
24mm	Samyang AF 24mm f/1.8 FE	Amazon →	f/1.8	prime	Full-frame	Wide-angle Astrophotography Landscape Low-light

All 103 Sony E lenses fit the Sony a1 II; 76 of them use its full-frame sensor at full resolution — check any lens against this body · best lenses for the Sony a1 II

Nearby lenses on the Sony a1 II

Sigma 16mm f/1.4 DC DN Contemporary Sigma 24-70mm f/2.8 DG DN II Art Sigma 24mm f/1.4 DG DN Art Sony E 16-55mm f/2.8 G Sony FE 24-105mm f/4 G OSS Sony FE 24-70mm f/2.8 GM II

FAQ

Does the Sony E 15mm f/1.4 G fit the Sony a1 II?
Yes. The Sony E 15mm f/1.4 G is a Sony E lens and the Sony a1 II is a Sony E body, so it mounts. Because the lens is APS-C and the body is full-frame, the Sony a1 II switches to crop mode and uses only the centre of its sensor, producing a lower-resolution file.

Will autofocus work?
We do not publish autofocus behaviour — FitMyLens stores only the specs that are fixed facts of the product (mount, focal length, maximum aperture, sensor coverage). Check the Sony product page for AF support on the Sony a1 II.

What focal length will I actually get?
23mm equivalent. In crop mode the Sony a1 II reads an APS-C-sized area, so the 15mm frames like a 1.5× longer lens.

Citing these specs? Go ahead — manufacturer data, last verified 2026-06-21. Copy a ready-made reference:

More: Sony E 15mm f/1.4 G specs · Every lens on the Sony a1 II · Best lenses for the Sony a1 II · All Sony E lenses · All cameras