What is a compact system camera?

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Which compact system camera to buy?

A variety of compact system camera (CSC) models target the different market sectors. Don't forget that the smaller Micro Four Thirds sensor from Panasonic and Olympus models may not quite match their competitors for low light image quality performance, but the smaller MFT sensor means smaller lenses – and that's important if you intend to keep your kit as miniature as possible.

Of the current models available, there are three main sectors that divide: DSLR replacement, style and mini options.

The larger-bodied CSC models, including the Samsung NX11 and Panasonic GH2, offer lots of button-based controls and built-in electronic viewfinders. These are often known as DSLR replacement models.

Medium-sized models are often design or style-focused, such as the Olympus PEN E-P3. This doesn't have a viewfinder but the inclusion of a hotshoe means an optional one can always be added at a later date. This is also the case for other similar models.

Mini models do away with viewfinders altogether and, in some cases, no hotshoe means these cameras are more akin to step-up compacts with changeable lenses. The Panasonic GF3, Olympus PEN E-PM1, Sony NEX-C3 and Samsung NX200 are great examples that tend to come bundled with prime pancake lenses to keep the overall size down (add a big lens and you may defeat the object of buying into a small system). Provided you are happy with a smaller sensor the Nikon V1, Nikon J1, and Pentax Qare also making there way into the shops.

Despite the wide range of choice, there's no Canon model in the compact system camera market. Rumours are rife that a model is forthcoming – but with another lens mounts, that'll only spread things out yet further.

For the time being, manufacturers are trying hard to get the public on board to buy into their systems. Once that happens, and when lens ranges expand, there will be natural growth and more pro-spec models are likely to become a reality. Ultimately, the CSC market could see a huge chunk of the DSLR sector eaten up in the not too distant future... Watch this space.

Top compact system cameras

Now for our mini guide to our favourite compact system cameras (CSCs) and the CSC models available at the moment, to help you choose the right one for you.

Most pocketable: Panasonic GF3