Canon and Nikon are the largest camera manufacturers in the world, but they were also the last to join the ever expanding CSC market. How do their two systems match up?
However, for many the natural competitor for the camera will be the Nikon 1 system, which was announced in September last year. Here's how the key stats match up.
Canon EOS M vs Nikon 1 sensor size
The size of the sensor was the feature most speculated about in the run-up to the EOS M announcement. Now it's here, we know it's an APS-C device, the same 18 million pixel device which is found in the EOS 650D.
On the other end of the scale, the Nikon 1 system uses a small, one-inch size sensor with 10.1 million pixels. It seems Nikon included a smaller sensor in order to create more of a difference between its CSCs and DSLRs and to keep the body size down.
With the small sensor, lenses mounted to a Nikon 1 system have a crop factor of 2.7x, meaning the standard 10-30mm kit lens has an equivalent focal length of 27-81mm.
On the other hand, the EOS M system has the same 1.6x crop factor as its other enthusiast and entry level DSLR cameras, so the standard 18-55mm kit lens offers an equivalent of 28.8-88mm.
Canon EOS M vs Nikon 1 lens mount and range
Both the EOS M and Nikon 1 introduced new mounts, the Canon EF-M and Nikon 1, to their manufacturer's range. For Canon it's the EF-M and for Nikon the Nikon 1. Neither mount is compatible with existing optics, but both manufacturers offer an adapter for attaching existing DSLR lenses.
For now though, Nikon has the greater number of proprietary lenses available. A 10-30mm is bundled with the camera as standard, while there is also a 10mm pancake, a 30-110mm zoom lens and a 10-100mm "superzoom".
Canon has launched just two new lenses for the EOS M, an EF-M 18-55mm standard kit lens, and an EF-M 22mm f/2.0 pancake lens. It's worth pointing out that the 22mm has an equivalent focal length of 35mm, making it particularly appealing to street photographers and making it a good competitor to the Fuji X100 fixed length, large sensor premium compact.
Canon EOS M vs Nikon 1 processor
Both cameras use the latest iteration of their manufacturers' image processor, which is Digic 5 for Canon or Expeed 3 for Nikon. Both say that this can deliver low noise in high sensitivity situations, and both can deliver full HD video recording at a variety of frame rates.
Canon EOS M vs Nikon 1 autofocus system
The Nikon 1 system uses a hybrid autofocusing system, so it was no big surprise to see Canon also go down the same route, which uses the same autofocusing system as the EOS 650D.
This kind of autofocus system provides the benefits of both phase detection and contrast detection.
Canon EOS M vs Nikon 1 sensitivity
The EOS M has a much greater sensitivity range than the Nikon 1. Up to ISO 6400 can be used in automatic ISO mode, while it is also expandable up to 12800 and 25600.
By contrast, the Nikon 1's native reach is ISO 100-3200, expandable up to 6400.
Canon EOS M vs Nikon 1 screen
Taking the same screen as the 650D, the EOS M features a 1040k dot touchscreen which can be used to control key parameters and set autofocus points, and even deploy the shutter.
The Nikon 1 J1 has a relatively low resolution screen of 460k dots, while the V1 has a 921k dot screen. Neither camera is a touch sensitive device though.
Canon EOS M vs Nikon 1 flash
In order to keep the size of the camera down, Canon has decided not to include a inbuilt flash on the EOS M. Instead, a small flash which can be attached on the hotshoe will come included in the box. With a Guide Number of 9, it's not quite as powerful as those found on standard entry-level DSLRs.
The Nikon system contains two options. While the J1 has an inbuilt flash, the V1 doesn't - but it does have a port for plugging in an optional accessory flash which can be bought separately.
It's worth noting that the Canon EOS M has a hotshoe which allows for any currently compatible Speedlite to be attached to the camera.
Canon EOS M vs Nikon 1 viewfinder
For some people, a viewfinder is a dealbreaker. If you're one of those people, you will be disappointed by the Canon EOS M, which doesn't have one. Canon also says that there are currently no plans to produce one.
It does have a hotshoe though, to house an optical unit, should Canon change its mind based on customer feedback.
The Nikon 1 V1 by contrast features a 1440k dot TFT EVF. The J1 has no device - and no way to connect one either.
Canon EOS M vs Nikon 1 ergonomics
One of the reasons Nikon included a smaller sensor in its camera was to keep the body size down, however the Canon is actually a tiny bit smaller than both the V1 and the J1.
Weight is very close, coming in at 277g for the J1, 294g for the V1 and 298g for the EOS M.
Canon EOS M vs Nikon 1 price and release date
Ah, the biggest bone of contention - pricing. For now, the Canon is significantly more expensive than either of the Nikon cameras, but this is most likely to be because it's a new release.
Current RRP for the Canon EOS M with the 18-55mm kit lens is £769 (around $1,203). By contrast, a Nikon 1 V1 can be picked up for around £479/$749, and a J1 can be had for around £340/$499.
It's worth remembering however that on release date, the RRPs for the V1 and J1 were £880 ($899) and £550 ($649) respectively.
Obviously, the V1 and J1 are already available to buy, while the Canon EOS M release date is expected around September.