Shooting for eBay: Creating Simple and Effective Product Shots for Online Auctions and Sales
by Alan Hess
Different Focal Lengths
The focal length of a lens doesn’t describe how long or short the lens is. Rather, it is the distance, measured in millimeters, from the optical center of the lens to the film or sensor when the lens is focused at infinity. That’s a lot of information that doesn’t really help you in making any decisions.
There are two things you need to know about focal lengths to decide what to use for an image. The first is that the focal length determines how much of the scene in front of the camera will be recorded in a photo. The smaller the focal length, the more of the scene it will record. So an 18mm focal length will record more of the scene than a 50mm or 200mm. Lenses with small focal lengths are called wide-angle lenses, lenses ...
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