Search results
Results From The WOW.Com Content Network
The camera can take a couple of shots (clear and in focus), then stops working. Removing the batteries and replacing may produce 2–3 extra shots. Canon's instructions (by phone) are to 'remove the batteries, rotate the on button and hold for 5 seconds, and then replace the battery'.
Many zoom lenses, particularly in the case of fixed-lens cameras, are actually varifocal lenses, which gives lens designers more flexibility in optical design trade-offs (e.g., focal length range, maximal aperture, size, weight, cost) than parfocal zoom, which is practical because of auto-focus, and because the camera processor can ...
Macro or close-up modes tend to direct the camera's focus to be nearer the camera. They may shrink the aperture and restrict the camera to wide-angle in an attempt to broaden the depth-of-field (to include closer objects) – this last mode of operation is often known as Super Macro. Movie mode allows a still camera to take moving pictures.
The hyperfocal distance is, therefore, the most desirable distance on which to pre-set the focus of a fixed-focus camera. It is worth noting, too, that if a camera is focused on s = ∞, the closest acceptable object is at L 2 = sh/(h + s) = h/(h/s + 1) = h (by equation 21). This is a second important meaning of the hyperfocal distance.
The focus itself may be adjusted in a variety of ways. Larger view cameras and the like slide the lens closer or further from the film plane on rails; on smaller cameras, a focus ring on the lens is often rotated to move the lens elements by means of a helical screw. Other systems include levers on the lens or on the camera body.
Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.
Battery life: 3500mAh, 6 hours talk time | Camera: 5 MP front camera and two rear cameras: 13 MP with auto focus, and 5 MP with a flash | Extra features: Voice typing, video chat | Storage: 32 GB ...
Auto-focus available for all "screw-drive" lenses, but no power contacts for power zoom or the later lenses with built-in focus motors. Aperture and shutter information visible in the viewfinder. Focus confirmation in the viewfinder for all lenses of f/5.6 or wider. 17 Custom Functions to help configure the camera to individual preferences.