Nikon will release the D40x, an upgrade to its popular D40 entry-level digital SLR, on 29 March. The new camera captures higher-resolution images than the D40, and has improved metering and colour balance.

The D40x has a 10.2Mp sensor that allows it to capture images at up to 3,872-x-2,592 pixels in size, which allows them to be printed at 300dpi at A3+. Nikon's 3D Colour Matrix Metering technology improves the accuracy of exposure settings, according to the company, while the Auto White Balance function delivers natural colours.

Nikon says that the D40x starts up almost instantly and has a continuous shooting mode which allows photographers to capture up to 100 Jpeg images at three frames per second. The SLR has an integrated auto focus that's designed to ensure that shots are crisp and clear. An additional ISO 100 setting helps with overly bright situations.

On the back of the D40x is a 2.5in LCD screen, which allows users to manipulate images in the camera if they so wish. The D-Lighting function improves underexposed areas by creating a copy of an image with added detail in the shadows, while an anti-red-eye function is also built in.

The D40x will cost £510 plus VAT with the new 3x 18-55mm f/3.5-5.6G ED II AF-S FX lens. The new lens is fitted with an ED glass element, which makes it easier to capture images with higher resolution and high contrast, and a Silent Wave Motor for quiet and smooth auto-focusing, according to Nikon. The D40x does not replace the D40, which will continue to be sold.