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Creative Scene Modes
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Most digital cameras offer some preset shooting modes that automatically dial in the settings that the manufacturer considers best for certain types of photography. Typically, you can select from at least two modes: portrait and landscape. Some cameras go further and offer an action mode for capturing moving subjects and nighttime mode for after-hours shooting. Because every manufacturer uses slightly different settings for these modes, I can t make a wholesale recommendation about which ones work best. You may want to do some tests to compare the images produced by each mode with the results you get when you take the photographic reins. If you have an image browser or viewer that can read the EXIF metadata that s stored in a JPEG image file, you can see the specific settings that the camera uses in each of the scene modes.
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On cameras that don t provide a way to set aperture or shutter speed manually, you may be able to get the setting you want by changing the scene mode. Switching to action mode usually produces the camera s fastest shutter speed, and choosing nighttime mode usually selects the slowest shutter. Similarly, portrait mode typically forces a larger aperture (lower f-stop), while landscape mode selects a smaller aperture.
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Correction and Color Filters
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With the exception of images captured in the RAW file format, all digital photos undergo some image processing as they re being stored to the camera memory. Color, sharpness, contrast, and other attributes may be tweaked to produce an image that the manufacturer believes will be the most satisfactory to the camera s target audience.
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CHAPTER 2: Exploring Creative Controls
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This image manipulation isn t necessarily a bad thing. In fact, whether you know it or not, your film pictures get similar treatment when you have them developed at a retail photo lab. But some cameras can be overzealous, especially in the area of sharpening. Page 22 of the color insert offers an illustration. If an image seems a little soft, you can always use your photo editor s sharpening filter to improve things. But correcting an oversharpened image is difficult. So either turn off in-camera sharpening or use the lowest available setting. As for color effects, including those that convert your photo to a black-and-white picture or add special effects such as a sepia tone, I recommend that you ignore them. For reasons explored in 8, you get more control over your image if you shoot in regular, full-color mode and do any color manipulations in your photo editor.
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Digital Zoom
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Digital zoom is nothing like having a true, optical zoom lens. Digital zoom simply enlarges the existing image and crops away the outer edges, just as if you had taken the same steps in a photo editor. The quality of the resulting picture is reduced because you have fewer pixels in your zoomed image. So why do manufacturers offer this feature Simple. Most people don t understand the difference between digital and optical zoom, and they think they re getting something important when they see digital zoom on the camera box. Or they may see only the part of the camera ad that claims 28X total zoom! and completely miss the fine print, which reveals that the model in fact offers an optical zoom factor of only 3X, with the rest of that 28-times magnification being produced by digital trickery. I ve even heard camera salespeople say that a cheaper camera with only a digital zoom is better than a more expensive model with an optical zoom because the magnification number (that X factor) is higher on the model with the digital zoom. In the immortal words of the Mad Hatter in Walt Disney s version of Alice in Wonderland, Oh, my goodness! THOSE are the things that UPSET me! (I ve been waiting 20 years to use that line. Sometimes spending hours in front of the television doesn t pay off right away.)
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In case you think I m mad as a hatter, check out Page 21 of the color insert, which illustrates what happens when you use digital zoom. 5 offers more advice about using a zoom lens and other means of getting closer to your subject.
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