Q: What is meant by 35-mm equivalent?
A: The sensor on most digital cameras is smaller than the frame size of a 35-mm
negative. Therefore, the image you get from a digital camera is cropped to a
smaller area of the scene than would be recorded by a 35-mm camera with the
same focal length lens. This is the equivalent of zooming in on a scene. You may
see specifications that list a magnification factor for the sensor such as 1.3, 1.5,
or 1.6. The 35-mm equivalent is the lens focal length, multiplied by the focal
length multiplier. For example, if the focal length of a camera lens is 30 mm and
the focal length multiplier of the sensor is 1.6, the 35-mm equivalent is 48 mm.
Q: How do I get the images into my computer?
A: You can download the images from your camera to your computer using the
Universal Serial Bus (USB) cable supplied with most modern digital cameras,
which you connect to a USB slot on your computer. Alternatively, you can
purchase a card reader, which is also hooked to your computer via a USB cable,
as shown in Figure 1-4. When you connect your digital camera to a computer or
insert a memory card into a card reader that??™s connected to your computer, the
computer recognizes the device, and you can download the images to the desired
folder on your hard drive.
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