Casio has a lineup of digital cameras consisting of 15 models, divided between the QV and Exilim series and ranging from the ultra-slim 3.2 megapixel EX-S100 to the powerful semi-professional 7.2 megapixel EX-P700. The EX-Z50 fits in to the middle of the range, as a powerful but extremely compact camera with some versatile shooting options for the more creative photographer.

It’s no surprise that the EX-Z50 is a well-designed, well-made and well-specified camera. It has an all-metal body, an ultra-compact Pentax Sliding Lens System 3x optical zoom, and a high definition 2.0in TFT LCD monitor with 84,960 pixels.

From a standing start the EX-Z50 starts up in a little over two seconds, which is half a second faster than the Pentax Optio S5i, arguably its closest rival. Shot-to-shot time in the highest quality setting is a respectable three seconds using a standard Lexar 128MB SD card, and is slightly faster at lower quality settings. However, the camera has no continuous shooting mode, so this is as fast as it gets.

The 7-point AF system is very quick, taking under half a second to lock on, and as a result there is virtually no shutter lag. Focusing also works extremely well in low light, especially impressive considering that there’s no AF-assist illuminator on this model.