Sony A200

StandardLenses

 

 

 

With the advent of digital photography, the definition of a standard lens has changed and now depends on the type of SLR you have. Indeed, it has never been a single focal length, because it varies by film or sensor size. On 8×10-inch film cameras, for example, the standard lens is 300mm. Again, that conversion factor issue raises its head. To get a lens with a “standard” or “normal” view, you take the diagonal measure of the sensor. For the Sony A200, that’s roughly 28mm, so a 28–35mm lens would equate to the definition of a standard lens. To exactly match a 50mm on a 35mm camera on the Sony A200, you need a 33.3mm lens. Though the 50mm is generally accepted as the true standard for 35mm cameras, by definition the standard ...