The Nikon D3S (top) and the Canon EOS-1D Mark IV (bottom) digital SLR cameras

DSLR cameras are highly valued by surveillance photographers because of their resolution, sensitivity, versatility in the field, availability of a wide variety of objective lenses and because they allow an accurate preview of framing close to the moment of exposure. Many photographers also prefer dSLRs, which when compared to compact point-and-shoot cameras, incorporate larger sensors now available with the same size as traditional film formats. These large sensors allow for similar field-of-view values to film formats, as well as their comparable sensitivity.

Over 80% of the dSLR cameras sold today are models from Nikon or Canon. As a result of their predominance, an abundance of lenses and accessories are available for these two camera bodies, resulting in an excellent selection and remarkable pricing.

What You'll Read About:

• How many pixels do you need in your dSLR camera?
• What’s new with full-frame sensor cameras?
• How does pixel size affect imaging performance?
• What’s with the new "enhanced ISO" capability? Is it useful?
• How can Night Vision Modules be used for low-light surveillance photography?
• What are the current Nikon/Canon dSLR models and how do their features and prices compare?