Sigma 45mm F2.8 DG DN | Contemporary lens — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/sigma-45mm-f2-8-dg-dn-contemporary/  (sheet CC BY 4.0)
Basis: Manufacturer specifications (Sigma)
Catalog version: 2026-10-20

Overall (mm): length 64.0, width 64.0, height 48.2
- Sigma 45mm F2.8 DG DN | Contemporary lens measures 64 mm in diameter and 48.2 mm long (2.52 × 1.9 in) per Sigma's specifications.
- Filter thread is 55 mm. Use these for lens-cap holders, hood adapters, padded case inserts and storage racks.
- Sigma makes this lens for Sony E-mount and L-Mount; the outer diameter is the same, the L-Mount version is 2 mm shorter, and the model above uses the Sony E-mount length.
- 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  64 mm (2.52 in)
Length  48.2 mm (1.9 in)
Filter thread  55 mm
Weight  230 g
Mount  Sony E-mount (L-Mount version also listed)
Length, L-Mount version  46.2 mm
Weight, L-Mount version  215 g

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- Sigma: 45mm F2.8 DG DN | Contemporary - Sigma lens page (specifications) — web — Publisher's page; dimensions are facts — https://www.sigma-global.com/en/lenses/c019_45_28/

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=sigma-45mm-f2-8-dg-dn-contemporary