Nº 003 — Rankings

Smallest OM System cameras

9 OM System cameras, every mount and fixed-lens compacts included, ranked by box volume, weight, depth or width. Smallest: OM System Tough TG-7.

AOM System Tough TG-7 202325–100mm eq. f/2–4.9 · built-in

BOM System PEN E-P7 2021Body only

COM System PEN 2026Body only

The smallest with a traced drawing, to scale. Open in the compare tool →

Sort byVolumeWeightDepthWidth

#	Body	Body W × H × D	Weight	Box volume	Compare
1	A OM System Tough TG-7 20231/2.3" · fixed 25–100mm eq. f/2–4.9	113.9 × 65.8 × 32.7 mm	249 g	≈ 261 cm³	Compare
2	B OM System PEN E-P7 2021MFT · Micro Four Thirds	118.3 × 68.5 × 38.1 mm	337 g	≈ 321 cm³	Compare
3	C OM System PEN 2026MFT · Micro Four Thirds	125.8 × 74.5 × 43.3 mm	393 g	≈ 421 cm³	Compare
4	OM System OM-D E-M10 Mark IV 2020MFT · Micro Four Thirds	121.7 × 84.6 × 49 mm	383 g	≈ 573 cm³	Compare
5	OM System OM-5 2022MFT · Micro Four Thirds	125.3 × 85.2 × 49.7 mm	414 g	≈ 587 cm³	Compare
6	OM System OM-5 Mark II 2025MFT · Micro Four Thirds	125.3 × 85.2 × 52 mm	418 g	≈ 615 cm³	Compare
7	OM System OM-3 2025MFT · Micro Four Thirds	139.3 × 88.9 × 45.8 mm	496 g	≈ 641 cm³	Compare
8	OM System OM-1 2022MFT · Micro Four Thirds	134.8 × 91.6 × 72.7 mm	599 g	≈ 1026 cm³	Compare
9	OM System OM-1 Mark II 2024MFT · Micro Four Thirds	138.8 × 91.6 × 72.7 mm	599 g	≈ 1088 cm³	Compare

Ranked on the maker's official dimensions, except box volume = width × height × the depth as drawn (the official depth when there is no top view). 9 of 9 have a traced drawing; the others open in the compare tool as a box of their official size.