Bed Frame Queen Instamatic Provides Your Bed with Perfect Support. The Mantua bed frame queen instamatic has extremely durable features, including a 1.5-inch angle iron construction that cradles your bed's foundation so it does not shift. A double angle support beam runs down the middle to prevent sagging.
Quora User, Digital photography since 2003... Optical zoom is a variable focal length lens, like a 15-85mm or 25-200mm lens. In an APS-C sensor DSLR camera, the standard or prime focal length is 35mm. Any focal length lower than this is called wide angle range. All the focal lengths above 35mm are called tele photo range.
Digital zoom was used to make the middle photo from the top photo, image quality is lost, while the lens was zoomed-in optically for the bottom photo, no quality is lost. Typically, the digital zoom would not be available until after the optical zoom had been exhausted. Digital zoom is a method of decreasing the apparent angle of view of a digital photographic or video image. Digital zoom is accomplished by cropping an image down to a centered area with the same aspect ratio as the original, and usually also interpolating the result back up to the pixel dimensions of the original.