TECHNOLOGY IS NOT ONLY EXPANDING RAPIDLY, it is merging and consolidating multiple technologies. This has become apparent in the DSLR cameras as they expand into recording video.

In the past, video cameras have been capable of recording still images, with a compromise in quality. Likewise, compact cameras adapted to taking video files, again at the expense of quality.

However, more recently, a large step toward one camera with dual function — good quality images and video — has been made. Canon introduced the EOS 5DmkII and the EOS 7D, primarily as digital still cameras, but with the capability of recording high definition videos.

The EOS 5DmkII and EOS 7D can record Full HD (High Definition) video at a higher quality than the average video camera. This is due to the large sensor size designed for still photographs. Secondly, having the ability to change lenses gives more variety and control for the operator.

While this is a positive for the videographer, you need to be aware of the limits of these cameras. For instance, the recording time is limited to 12 minutes before recording will automatically stop. This is due to the build-up in heat across the sensor surface.

One other consideration is the file sizes these cameras generate. HD video requires large file sizes and compact flash cards can be consumed rapidly. Having enough memory cards will be a necessity if you frequently use the video function.

Additionally, it is recommended that you also use an external microphone rather than the inbuilt microphone. This is true for video cameras as well. However, some microphones are physically long and, given the position the shoe of the camera, the microphone can be seen in the frame of some wide angle lenses.

Most people would probably not be purchasing a DSLR primarily for video, however, for recording small amounts of video it can be a very useful tool. Photographers who shoot portraits and real estate presentations are finding that video adds another viable product to their services.

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