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Features Worth Noting


Features Worth Noting

Electronics manufacturers love to make bulleted lists of features. Some you may never need or want, while others can help you improve the footage you shoot.

Focus

It's a safe bet that you want the subjects in your video to be in focusbut which subjects, and when? Camcorders feature automatic focus control, which is great when you're shooting footage on the fly. Who wants to try to manually focus when following animals in the wild ( Figure 1.12 )?

Figure 1.12. Gratuitous vacation footage inserted here. But really, when you're shooting video on the run, trying to focus manually tat the same time would have meant losing the shot. You can view this movie clip at this book's companion Web site ( jeffcarlson.com/imovievqs ).


However, sometimes the automatic focus can be too good, bringing most objects in a scene into focuswhich is why camcorders include an option for manually focusing the lens. (Higher-end models include a focus ring built around the lens, like on a 35mm still camera. Most smaller camcorders sport small dials or scroll wheels to control manual focus.) Manual focus is essential for some situations, such as interviews, when you're not moving the camera (see Chapter 2).

Shutter speed

The term "shutter speed" is a bit misleading here, since a digital camcorder doesn't technically have a shutter (a door or iris that opens quickly to allow light to enter the lens). However, it's possible to duplicate the effects of different shutter speeds by changing the setting on the camera. This is good for filming action with movement that would otherwise appear blurry (such as sporting events). Shutter speed is measured in fractions of a second, so a setting of 1/60 is slower than 1/8000 (see Chapter 3).

Night vision/low light

You have a few options for filming in low-light conditions. You could always carry around a full lighting setup, but that's not realistic. To compensate, some cameras include a night-vision mode that picks up heat from objects near the camera and displays a greenish representation of the scene.

Other cameras may include a low-light setting, which boosts the amount of available light that's picked up by the camera's image sensors ( Figure 1.13 ). It's surprisingly effective, though the playback can be stuttered or blurry if a lot of movement is in the scene.

Figure 1.13. Some camcorders feature a low-light setting, which boosts the effectiveness of the avail able light.

Normal

Low-light setting


S-Video port

All camcorders offer some type of output port so you can hook up a television or monitor to play back your footage. Usually, RCA-style plugs are included, but some models also offer an S-Video port. Hooking up your camera to a TV with an S-Video cable provides a clearer picture than with other AV cables. Use it if you've got it.



Features to Ignore/Avoid

Just as there are features you should pay attention to, some features should be ignored or outright avoided. Most of these are included for buyers who don't have the means to edit their movies after shooting. But iMovie does all of the following better than a camera. Most importantly, these effects permanently alter your footage, which you can't correct later in iMovie.

  • Digital zoom. One of the first features you'll see on a camera is that it has a 200X (or higher) digital zoom. The technical interpretation is that the computer inside the camera digitally enlarges the image it's seeing, and it appears as if the camera is zoomed beyond its optical capabilities ( Figure 1.14 ). The real-world interpretation, at least for now, is that some marketer somewhere is smiling and thinking about the wisdom of P.T. Barnum. Digital zoom isn't pure hokum, but it's also not a mature enough technology to be used in your movies. I expect that as cameras become more powerful and the image processing chips and software speed up (as they inevitably will), digital zoom will become a powerful tool. But not yet.

    Figure 1.14. Digital zoom creates lots of pixelation as the camera tries to interpolate the image.

  • Special effects. Before iMovie, you couldn't apply "sophisticated" techniques such as fade-in or fade-out without using an expensive professional editing system. So, camcorder makers added the capability to apply fades, wipes, and image distortions such as sepia tones or solarization ( Figure 1.15 ). Well, forget special effects entirelyyou can do them better in iMovie, with more control, and without degrading your footage.

    Figure 1.15. In-camera special effects are really only good for ruining otherwise good footage. And not to sound mean, but the Mosaic (top) and Wave (bottom) effects shown here aren't even that interesting. Let iMovie handle your effects (see Chapter 13).

  • Date stamp. You can optionally display the date and time on your footage, which would appear to be helpful if not for the fact that the information remains on the tape. Even with this feature disabled, your camcorder is recording (but not displaying) this data, which shows up in iMovie when you view information about a clip ( Figure 1.16 ). Similarly, avoid built-in options for adding titles.

    Figure 1.16. iMovie notes the date and time a clip was shot, so you don't need to use a date stamp feature that permanently adds it to the footage.

  • Still photo. Most cameras now include the capability to take still photos. This is a good idea in theory, but the execution varies widely. Some cameras can capture progressive-scan imageswhich means every pixel is grabbedand then save them to a separate memory card (such as SD or Sony Memory Stick cards). These result in better images, depending on the camera, but still not as good as what you'd get from most digital still cameras. A few models now include separate CCDs (and even separate lenses) to take higher quality images.

    The technology is always improving, so it's possible that soon you may be able to buy a still photo and video camera combination that works well for both tasks . But personally , I'm more comfortable carrying two cameras that each excels at its appointed tasks.