Ghosting: Difference between revisions

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'''Ghosting''' (or "travel ghost") occurs when the projector [[shutter]] is closing either too early or too late. The function of the shutter is to hide the film as it is being pulled down by the [[intermittent]] or [[claw]], and reveal it while it is sitting still in the gate. When the shutter is out of time, ghosting occurs and the audience sees a little bit (or in some cases, a lot!) of the frame being pulled down. If ghosting appears above the image, the shutter is closing late. If ghosting appears below the image, the shutter is closing early. It will appear as a vertical streaking of lighter areas, especially noticeable on films with subtitles, or in scenes with lamps in a dark room. Because the image is being "smeared," it reduces perceived sharpness. Very bad!
'''Ghosting''' (or "travel ghost") occurs when the projector [[shutter]] is closing either too early or too late. The function of the shutter is to hide the film as it is being pulled down by the [[intermittent]] or [[claw]], and reveal it while it is sitting still in the gate. When the shutter is out of time, ghosting occurs and the audience sees a little bit (or in some cases, a lot!) of the frame being pulled down. If ghosting appears above the image, the shutter is closing late. If ghosting appears below the image, the shutter is closing early. It will appear as a vertical streaking of lighter areas, especially noticeable on films with subtitles, or in scenes with lamps in a dark room. Because the image is being "smeared," it reduces perceived sharpness.




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If adjusting the shutter knob does not solve the problem, the shutter will have to be retimed by loosening the shutter from the shutter shaft and reseating it. If you find that your shutters constantly need to be retimed, it may be an indication of a larger problem.
If adjusting the shutter knob does not solve the problem, the shutter will have to be retimed by loosening the shutter from the shutter shaft and reseating it. If you find that your shutters constantly need to be retimed, it may be an indication of a larger problem.


Dirty lenses or port glass can also make the image appear to ghost. Shutter ghosting will only effect the image vertically, so if the image appears to be smeared horizontally or in all directions there may be something else going on.
Dirty lenses or port glass can also make the image appear to ghost — you may need to do some [[cleaning]]. Shutter ghosting will only effect the image vertically, so if the image appears to be smeared horizontally or in all directions there may be something else going on.


[[Category:Projector components]]
[[Category:Projector components]]
[[Category:Equipment]]
[[Category:Equipment]]