Sony FE 20mm F1.8 G (SEL20F18G) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/sony-fe-20mm-f1-8-g/  (sheet CC BY 4.0)
Basis: Manufacturer specifications (Sony Marketing (Japan))
Catalog version: 2026-10-20

Overall (mm): length 73.5, width 73.5, height 84.7
- Sony FE 20mm F1.8 G (SEL20F18G) measures 73.5 mm in diameter and 84.7 mm long (2.89 × 3.33 in) per Sony Marketing (Japan)'s specifications.
- Filter thread is 67 mm. Use these for lens-cap holders, hood adapters, padded case inserts and storage racks.
- No CAD file: the maker publishes only overall sizes, and a plain box or cylinder is not useful design geometry. The table is the published data; parts with real geometry have their own pages.

dimension  value
Maximum diameter  73.5 mm (2.89 in)
Length  84.7 mm (3.33 in)
Filter thread  67 mm
Weight  373 g
Mount  Sony E-mount
Model number  SEL20F18G

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Sony Marketing (Japan): Lens & Accessory: E-mount lens / accessory general catalogue (PDF) — web — Publisher's page; dimensions are facts — https://www.sony.jp/products/catalog/alpha_lens.pdf

No true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.
API: https://xemstudio.com/api/geometry?object=sony-fe-20mm-f1-8-g