When it applies
- Select APS-C/S35 Shooting On, or use Auto and confirm APS-C capture. Auto depends on the attached lens and camera settings; On gives approximately 1.5× equivalent framing.
- For 3:2 JPEG/HEIF in APS-C capture, the largest option is M:14M (4608×3072); S is 8.2M (3504×2336). L cannot be selected and an existing L setting temporarily becomes M.
Where it stops
- Stills can use Off, but that does not make an APS-C lens cover full frame; Sony warns that image edges may darken.
- Other aspect ratios have different pixel dimensions. RAW formats and movie modes require their separate conditions.
- This rule does not establish autofocus speed, burst throughput, stabilization effectiveness, or behavior across every firmware version.
Sources
- ILCE-7M4 Help Guide — APS-C S35 Shooting — Menu item details and Note. On/Auto permit APS-C lenses; Off remains selectable for stills but can darken edges. 4K60p/50p locks On. No firmware minimum stated. Read 2026-09-07.
- ILCE-7M4 Help Guide — JPEG Image Size/HEIF Image Size — 3:2 table; Hint; Note. APS-C cannot select L; L temporarily becomes M. M is 14M, 4608×3072 for 3:2. Does not establish every RAW format. Read 2026-09-07.
- ILCE-7M4 + SEL1655G — Compatibility Information — Exact body/lens result and restriction bullets. Opened through direct HTTPS after web fetch failed. APS-C framing is listed. Distortion compensation is set to Auto. Read 2026-09-07.
- ILCE-7M4 + SEL18135 — Compatibility Information — Exact body/lens result and restriction bullets. Opened through direct HTTPS after web fetch failed. APS-C framing is listed. Distortion compensation is set to Auto. Read 2026-09-07.
- ILCE-7M4 + SEL70350G — Compatibility Information — Exact body/lens result and restriction bullets. Opened through direct HTTPS after web fetch failed. APS-C framing is listed. Distortion compensation is set to Auto. Read 2026-09-07.
- ILCE-7M4 + SEL35F18 — Compatibility Information — Exact body/lens result and restriction bullets. Opened through direct HTTPS after web fetch failed. APS-C framing is listed. No distortion-control restriction is listed; absence is not a positive all-settings guarantee. Read 2026-09-07.
- ILCE-7M4 + SEL11F18 — Compatibility Information — Exact body/lens result and restriction bullets. Opened through direct HTTPS after web fetch failed. APS-C framing is listed. Distortion compensation is set to Auto. Read 2026-09-07.
Pairs checked under this rule
Only these pairs were checked. The rule does not extend to other gear on its own.
- Sony a7 IV + Sony E 16-55mm F2.8 G
- Sony a7 IV + Sony E 18-135mm F3.5-5.6 OSS
- Sony a7 IV + Sony E 70-350mm F4.5-6.3 G OSS
- Sony a7 IV + Sony E 35mm F1.8 OSS
- Sony a7 IV + Sony E 11mm F1.8
Researched from manufacturer documents by an AI agent and source-checked 2026-09-07. How the research works