Instructions for choosing a dSLR Camera
Digital-Only Qualities
Up to this point, some of the features we have looked at are uniform characteristics of both digital and film cameras. Now, let’s evaluate what makes dSLRs so wonderful: the digital technology that separates them from traditional film cameras. The LCD screen allows photographers to instantaneously view their work and make adjustments on the fly. Different storage media permits photographer’s to take hundreds of pictures in a single day, without the added expense of film.
The LCD screen is on the back of the camera and shows the photographer a representation of the image they just created, instantly after taking the picture. The size of the LCD is a primary factor in evaluation. Some newer camera models feature “live-view” LCD, which can show the photographer exactly what is coming through the lens before a picture is even taken. Of the four cameras in Figure 1, three have LCD screens of 2.5”, while the Nikon D3 has a 3” screen. None of these models feature “live-view,” which is still a relatively new technology.
A camera’s accepted storage media is the type or brand of memory card that can be used to store pictures. Some memory cards have become standard for many cameras, while other manufacturers prefer to use proprietary storage media. Different memory cards can record images at varying speeds, and hold greater or lesser amounts of data. It is important to know what your camera accepts, so that you can find the best storage media available. A common storage media is the CompactFlash card, which is compatible with all cameras in Figure 1.
Lens Availability
One of the great advantages of having a digital SLR is the spectrum of available lenses. Understanding what comes with your camera, and what you can add to your collection later, are points of consideration. Most cameras are available in a package from the manufacturer with a standard lens that ranges around 11-45mm.
The focal length of a lens is measured in millimeters, with lower numbers representing a shorter zoom level and a wider field of view. An 11-45mm lens will sufficiently capture a wide, expansive landscape scene; a 70-200mm lens can zoom in on far away objects.
Think about what types of shots you plan on taking. Will you be going on a safari where animals in the distance are a primary subject? Perhaps you plan on shooting photos of architecture, or interior design. Figure 2 outlines available lenses for different cameras.
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