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Product Survey: Digital SLR Cameras 2007-8
Update March 15 2009: Following the arrival of the Panasonic G1, we've created a new Product Survey containing more recent digital SLRs and other cameras with interchangeable lenses. This Product Survey is an archive of our older tests of digital SLRs.
Renaud Labracherie
Updated: April 15, 2009
Updated: April 15, 2009

Just what do you do with 10 Million Pixels?

Ten million pixels for just one photo certainly sounds impressive, but what does it actually mean? First of all, having more detailed photos makes it easier to make prints that are physically larger without losing any detail. A digital photo measuring 3872 x 2592 pixels allows you to make good quality (300 dpi) prints at . Reduce the quality just a little, and you can make perfectly reasonable photo prints on A3 paper.
The other main benefit of having so many pixels is that it allows you to be more selective about the areas you crop out. If you start with a good quality 10 Megapixel photo, you can enlarge certain areas several times over without noticeably impacting quality, which is how the digital zoom feature on compact cameras works. Rather than actually producing an enlargement using a combination of optics, parts of the image are cropped out to enlarge a certain area.
The other main benefit of having so many pixels is that it allows you to be more selective about the areas you crop out. If you start with a good quality 10 Megapixel photo, you can enlarge certain areas several times over without noticeably impacting quality, which is how the digital zoom feature on compact cameras works. Rather than actually producing an enlargement using a combination of optics, parts of the image are cropped out to enlarge a certain area.
The latest stars are 10 Megapixel digital SLRs at what are astonishingly low prices. Three or four years ago, you'd pay this much for a high-end compact.
It's not just the prices that are changing, though, as we're also witnessing rapid developments in the technology available on the cameras themselves, which now offer much better quality and are all of a more or less professional standard.
Better Image Quality
Until recently, we were somewhat skeptical about the seemingly unstoppable race for digital cameras with more and more pixels. In a lot of cases, extra Megapixels did not result in better quality photos. However, that situation is starting to change, and the move from cameras with 6 or 7 Megapixels to those with 10 Megapixels (or even more) has had a noticeable impact on results. In general, photos on this new generation of cameras are sharper, with more accurate colours and improved noise handling
Hardware Improvements
These cameras haven't just changed on the inside, though: their bodies have developed too. It's increasingly normal for digital SLRs to have a 2.5'' LCD screen, which is much easier to see. Others have added features designed to make life simpler for photographers. Sony and Pentax, for instance, have added mechanical image stabilization to limit blurriness in photos caused by an unsteady hand, improving the quality of photos taken in low light. Nikon's D40, D40X and D80 now come with much more solid with large viewfinders and multifunction lenses.
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