Ultraviolet filters can also be left on a
camera lens to protect it against dust and scratches.
Table 3-1: Popular Lens Filters and Their Usage
TIP
Purchase a skylight ?¬? lter and leave it on the camera lens
at all times. The ?¬? lter protects the lens from dust and
scratches.
3 52 Digital Photography QuickSteps Shooting Like a Pro
PC QuickSteps Getting to Know Your PC 53
10 9 8 7 6 5 4 3 2 1
Use the RAW File Format
Many high-end and most digital SLRs have the capability to capture images
in the RAW format. A RAW image is pure digital data??”exactly what the
image sensor recorded. The image is not processed; therefore, no compression
is applied to the image and you have more data with which to work. Many
beginning photographers shy away from capturing in RAW format, because
it takes up a lot of room on the memory card and most camera manuals don??™t
give clear-cut instructions on how to work with RAW images after capturing
them. After you download the image to your computer, you can view it using
the viewer supplied by the camera manufacturer. You can then correct for any
deficiencies in exposure, correct white balance, sharpen the image, control
image contrast and saturation, and so on.
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