Difference between revisions of "Film advance"
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| − | + | '''Film advance''' is a mechanism for moving film from one spool to another incrementally one frame at a time. | |
| − | + | Advance may be a manual process, and may be called ''winding'', ''advance'', ''wind-on'' and various other terms, and may use, for example, a ''knob'', ''key'', ''lever'', ''slider'' or ''thumbwheel''. For this method there must be some way of stopping winding when the next frame is reached; typical methods are the [[red window]], or some more positive method where the camera stops the winding at the correct point. A few plate cameras (e.g. the [[Klito|Houghton Klito No.1]]) adopted a "falling plate" arrangement, where a number of plates were kept in a sprung magazine, usually behind the focal plane. After exposure, the exposed plate fell forward into a well, allowing the next one to move forward for use. | |
| − | + | Many cameras - particularly later ones - have some form of automated wind-on, triggered by the [[shutter release]]. These use a clockwork mechanism (e.g. the [[Robot]] cameras or the [[Kodak Instamatic X-45]]), or an electric motor. On a number of SLR systems, there were add-on motor-wind devices produced between the 1960s and 1990s. | |
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Revision as of 13:15, 23 April 2008
Film advance is a mechanism for moving film from one spool to another incrementally one frame at a time.
Advance may be a manual process, and may be called winding, advance, wind-on and various other terms, and may use, for example, a knob, key, lever, slider or thumbwheel. For this method there must be some way of stopping winding when the next frame is reached; typical methods are the red window, or some more positive method where the camera stops the winding at the correct point. A few plate cameras (e.g. the Houghton Klito No.1) adopted a "falling plate" arrangement, where a number of plates were kept in a sprung magazine, usually behind the focal plane. After exposure, the exposed plate fell forward into a well, allowing the next one to move forward for use.
Many cameras - particularly later ones - have some form of automated wind-on, triggered by the shutter release. These use a clockwork mechanism (e.g. the Robot cameras or the Kodak Instamatic X-45), or an electric motor. On a number of SLR systems, there were add-on motor-wind devices produced between the 1960s and 1990s.
