Going solely on out-and-out image quality, the Olympus OM-D E-M10 Mark III is left wanting compared to its rivals (though a boost in resolution to 20MP would have negated this a little). Image quality is still more than satisfactory though, and you'll be able to produce very nice A3-sized prints from your shots.
But that's just one element, and you have to look at the OM-D E-M10 Mark III as a whole to see its charms. Its stylish design and solid-feeling body are much more satisfying than similarly priced DSLR rivals, while the compact proportions give it a distinct appeal over rivals.
The camera is easy to use for first-time users, while both features and performance will be sufficient to keep experienced users happy. The OM-D E-M10 Mark III might not be a massive leap forward over the Mark II, with much of the camera's specification remaining the same, but Olympus has refined and tweaked one of our favorite mirrorless cameras to make it an even more tempting proposition.
The closest rival to the OM-D E-M10 Mark III, the X-T20 is a brilliant mirrorless camera. Featuring an excellent 24.3MP sensor and advanced AF system, the X-T20 also sports a fabulous finish, tactile controls and polished handling, making it a very satisfying camera to shoot with.
Read our in-depth Fujifilm X-T20 review
Its finish isn't quite as nice as that of OM-D E-M10 Mark III, but the D5600's 39-point AF system is the best you'll find in a entry-level DSLR. There isn't much wrong with its 24.2MP sensor either, and it delivers excellent results, while the logical control layout of the D5600 makes it easy to use.
Read our in-depth Nikon D5600 review
Canon EOS Rebel T7i / EOS 800D
Like the D5600, the finish isn't a match for the OM-D E-M10 Mark III, but the 24.2MP sensor delivers the goods, while the Dual Pixel CMOS AF system is great for Live View shooting. The touchscreen interface is one of the best around as well, but the lack of 4K might put some off.
Read our in-depth Canon EOS Rebel T7i / EOS 800D review