In almost every physical respect, this dinky DSLR camera is identical to the Olympus E-400, launched barely six months ago. It's still supremely small and light, and it noticeably lacks the bulge of a battery grip that appears to be a standard fixture on all other digital SLRs.

This slimline appearance makes it feel much more like a traditional compact film SLR, harking back to the classic Olympus OM-series of designs from the 1970s.

As well as its good looks, the E-410 has an excellent LCD interface. This doesn't just show the current settings, it also enables you to select and adjust them directly. The Nikon D40x offers this too, but it's nowhere near as elegant or successful in its execution.

Inside the camera, though, some major changes have taken place. The biggest is the incorporation of a Live View mode, where you can, optionally, compose pictures using the LCD rather than in the viewfinder.

Olympus pioneered Live View in the complex and ugly E-330 (now discontinued), which had a secondary 'viewing' sensor within the camera. The E-410 dispenses with this. It simply flips the mirror up, opens the shutter and feeds the image from the sensor directly to the LCD display.

This approach has a couple of disadvantages. Firstly, it exposes the sensor to dust within the camera body for longer periods than usual.

However, Olympus was first to introduce an anti-dust system, and the E-410's SuperSonic Wave Filter vibrates the sensor to shake dust off each time the camera is started up. We were pleased to see that none of our test shots showed any visible signs of dust.

The second problem is that Live View does slow things down. Shooting in Live View mode involves some convoluted mirror movements. First of all the mirror has to come up to enter Live View mode.

It flips down when you press the shutter to enable the focusing (presumably the AF sensor is in the pentaprism), then flips up and down again during the exposure in the manner of a regular SLR. Finally, the mirror flips up once more after the shot in order to return ready for Live View mode again.