Of late, all of the attention has been on APS-C and full-frame cameras. It can be easy to forget the benefits of a smaller sensor – namely a smaller body and, importantly, a smaller overall system. The OM-D E-M5 Mark III is an attractive little camera, with a lightweight, travel-friendly body that's brimming with extras.

Small and light body; Lots of direct-access controls; Vari-angle, touch-sensitive screen;

Four Thirds sensor smaller than rivals; Not the best for low-light shooting; Single card slot;

The Olympus OM-D E-M5 Mark III strikes a fantastic balance between features, performance, size and price. It is the most lightest and most compact weatherproof mirrorless camera ever made and still manages to include an EVF and builtin image-stabilization.

Very low image-noise; Effective stabilization; Well-balanced metering system; Quick and accurate autofocus system; Instant shutter-lag; Virtually no black-out; Fast continuous drive speed with deep buffer; Highly efficient interface; Huge feature-set; Exceptionally compact; Good build quality

Strong anti-alias filter; Poor color accuracy; AWB struggles with artificial light; Not always Exposure-Priority; Partially modal EC; Flex in LCD hinge; Noticeable delay to record video; Uncomfortable eyelets; Very short battery-life

The Olympus OM-D E-M5 Mark III is an appealing camera for photographers already invested in Micro Four Thirds gear, but it isn't as innovative as previous entries in the series.

Compact, all-weather body; Stabilized image sensor; Includes external flash; Up to 30fps Raw capture; Vari-angle LCD and OLED EVF; Well-established lens system.

Tops out at 5.3fps when tracking; Wide aperture lenses are bulky and expensive; Smaller image sensor limits resolution and depth of field control; Plastic exterior; Charging port not USB-C.

The Olympus OM-D E-M5 Mark III ($1,199.99) offers some upgrades from the aging Mark II version, a camera we reviewed in early 2015. Its sensor has more pixels, adds support for 4K, and phase detection for more reliable autofocus. The camera, and Micro Four Thirds system, have some appeal for photographers who prioritize light and compact lenses, as well as in-body stabilization. But it doesn't offer as much versatility or value as the Sony a6400 or Fujifilm X-T30, our co-Editors' Choice winners in this class. Plastic, But Still Protected The E-M5 Mark III's exterior is largely plastic—the sturdy, composite type, not anything flimsy. It's a change from the Mark II's magnesium alloy exterior, though, and one that will ruffle some feathers. Weather sealing is better, however—the camera boasts an IPX1 protection rating, so you can use it in rainy weather, assuming your lens is protected too. It's sold in black or silver versions—we received it in silver for review. The body measur...

The Olympus OM-D E-M5 Mark III is an appealing camera for photographers already invested in Micro Four Thirds gear, but it isn't as innovative as previous entries in the series.

Compact, all-weather body; Stabilized image sensor; Includes external flash; Up to 30fps Raw capture; Vari-angle LCD and OLED EVF; Well-established lens system

Tops out at 5.3fps when tracking; Wide aperture lenses are bulky and expensive; Smaller image sensor limits resolution and depth of field control; Plastic exterior; Charging port not USB-C

Stylish, lighter than ever, and crammed with shooting modes for users of all skill levels, power under the hood and improvements across the board, the Olympus OM-D E-M5 Mark III is a sensible upgrade. It may not quite match the overall image quality potential of its larger-sensor rivals, but the E-M5 Mk III hits the sweet spot for size, weight, handling and features.

Powerful image processor; Much improved video spec; Insanely good image stabilization; Tiny body, excellent handling; A plethora of shooting modes; Stylish looks;

Smaller sensor than rivals; No longer has metal shell; Larger handgrip would be welcome; A little expensive

Stylish, lighter than ever, and crammed with shooting modes for users of all skill levels, power under the hood and improvements across the board, the Olympus OM-D E-M5 Mark III is a sensible upgrade.

Powerful image processor; Much improved video spec; Insanely good image stabilization; Tiny body; excellent handling; A plethora of shooting modes; Stylish looks

Smaller sensor than rivals; No longer has metal shell; Larger handgrip would be welcome; A little expensive

Brilliant in-body stabilisation; Compact size; Excellent stills performance; Very good 4K video;

Plasticky feel; Average battery life; Slightly under-par continuous autofocus;

Brilliant in-body stabilisation; Compact size; Excellent stills performance; Very good 4K video;

Plasticky feel; Average battery life; Slightly under-par continuous autofocus;

The Olympus OM-D E-M5 Mark III is an excellent all-rounder that crams a load of smart skills into a tiny package

Brilliant in-body stabilisation; Compact size; Excellent stills performance; Very good 4K video

Plasticky feel; Average battery life; Slightly under-par continuous autofocus