Mid-Level pro DSLR from Nikon adds HD video along with several small but significant upgrades.

Physically, the D300s has the same look and feel as the D300. At 1 lb. 13 ounces, there's only a negligible weight increase and the body -with its solid magnesium alloy construction-remains at a comfortable-to-hold 5.8 x 4.5 x 2.9 inches

Pentax has a bold new semi-pro DSLR with some groundbreaking features.

Great feature set with several significant imaging innovations ; tough, rugged, and comfortable lightweight build ; quick and reliable autofocus ; HD video feature lets you use Shake Reduction and control aperture ; time-saving HDR shooting mode

Images were noisy at ISO 3200 ; JPEGS look slightly oversaturated ; wobbly Jell-O effect in HD recording

The Pentax K-7 is built like a miniature tank and is packed with a host of useful features

This compact camera with a big sensor looks sharp, but is it the right tool for pros?

Someday somebody's going to create a compact digital camera that's capable of meeting the needs of pro photographers and when that happens, that somebody-or, more accurately, that company-is going to get very, very rich. How do I know this? It's not ...

This new studio-oriented DSLR from Nikon may be priced high for the times but its image quality is drop-dead gorgeous.

The water-, dust- and shock-resistant D3X is built to take some pounding

For studio photographers on a budget, this full-frame, 24.5-megapixel monster from Sony is a great option. Noisy low-light images may turn off others, though.

The Sony A900 offers a solid but relatively lightweight build

Though it may not be the "game changer" it's been billed as, this long-awaited DSLR will certainly change your options as a photographer.

Images captured with the 5D Mark II in low light at high ISOs were stunning

No, we don't hope that white digital SLRs will be a big trend this year but as a one-off, specialty product, we kind of like this eye-catching, black-and-white cookie, limited-edition Pentax K2000.

As a camera, Pentax K2000 is for advanced amateurs-not pros-and features a the 10.2MP CCD imaging sensor; 2.7-inch, 230,000-dot, wide-view LCD screen; and in-camera Shake Reduction. Like the camera, the two white Pentax lenses-not to be confused with ...

Canon's new mid-level DSLR is a solid upgrade, but might have been even better with less resolution.

Improved dynamic range ; no additional noise at up to ISO 3200 despite increase in resolution from previous model ; good speed overall ; higher resolution 3-inch LCD from previous model ; easy-to-navigate new menu system

Images at ISO 12600 are practically unusable ; confusing mix of amateur and professional features

The Canon 50D is sturdy and attractive but looks a lot like the previous model

As the first DSLR to offer both HD video with sound and high-quality stills, the Nikon D90 deserves some props.

A very easy-to-use, high-quality digital SLR for shooting both HD video and still images ; deserves props for being the first camera to pull off this one-two punch successfully ; excellent low-light shooting with low noise

HD video is slightly jittery at 24 frames per second ; panning in video mode produces some lag ; test unit I tried had persistent error message and camera lock-up issue

More than just a novelty, the Nikon D90's ability to shoot HD video provides photographers with a useful one-two punch

Learn more about the Samsung GX-20 from our guest contributor, Mark Goldstein...

When you first take the Samsung GX-20 out of its box, you can instantly tell that this is a serious camera-it's a large and heavy DSLR, even without the lens fitted. The GX-20 has a reassuringly solid feel that belies its mid-range price tag, with an ...