Ghosting - Revision history

Rfhall at 20:50, 10 November 2021

2021-11-10T20:50:44Z

← Older revision		Revision as of 13:50, 10 November 2021
Line 8:		Line 8:


	'''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.


Line 34:		Line 34:
	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]]

JesseCrooks: Added dash to "Simplex X-L."

2020-05-09T03:28:00Z

Added dash to "Simplex X-L."

← Older revision		Revision as of 20:28, 8 May 2020
Line 29:		Line 29:


	'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On [[Simplex XL]]s the knob is on the top of the projector head, and on the [[Century]] the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do (the MPAA Green Band from a trailer works great for this purpose).		'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On [[Simplex X-L\|Simplex X-Ls]] the knob is on the top of the projector head, and on the [[Century]] the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do (the MPAA Green Band from a trailer works great for this purpose).

Rlyon at 21:53, 4 April 2017

2017-04-04T21:53:31Z

← Older revision		Revision as of 14:53, 4 April 2017
Line 36:		Line 36:
	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. 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:Equipment]]		[[Category:Equipment]]

Rlyon at 21:44, 15 January 2017

2017-01-15T21:44:07Z

← Older revision		Revision as of 14:44, 15 January 2017
Line 8:		Line 8:


	'''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. ~~This is~~ especially noticeable on films with subtitles, or in scenes with lamps in a dark room~~, for example~~. 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. Very bad!


Line 29:		Line 29:


	'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On Simplex ~~XLs~~ the knob is on the top of the projector head, and on ~~Centurys~~ the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do (the MPAA Green Band from a trailer works great for this purpose).		'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On [[Simplex XL]]s the knob is on the top of the projector head, and on the [[Century]] the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do (the MPAA Green Band from a trailer works great for this purpose).

Rlyon at 01:12, 12 December 2016

2016-12-12T01:12:56Z

← Older revision		Revision as of 18:12, 11 December 2016
Line 8:		Line 8:


	'''Ghosting''' 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. Because the image is being "smeared," it reduces perceived sharpness. Very bad!

Rfhall at 01:16, 11 December 2016

2016-12-11T01:16:32Z

← Older revision		Revision as of 18:16, 10 December 2016
Line 35:		Line 35:

	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. 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:Equipment]]

Jantos at 01:06, 11 December 2016

2016-12-11T01:06:48Z

← Older revision		Revision as of 18:06, 10 December 2016
Line 20:		Line 20:
	----		----
	[[File:Century JJ Face.jpg\|right\|thumb\|400px\|Century JJ with shutter adjustment knob]]		[[File:Century JJ Face.jpg\|right\|thumb\|400px\|Century JJ with shutter adjustment knob]]





Line 36:		Line 33:

	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.

Jantos at 23:08, 10 December 2016

2016-12-10T23:08:10Z

@@ Line 1: / Line 1: @@
-[[File:Ghosting.jpg|right|thumb|600px]]
+[[File:Ghosting.jpg|right|thumb|500px|Ghosting Test Film]]
 '''Ghosting''' 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. Because the image is being "smeared," it reduces perceived sharpness. Very bad!
 ----
-'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On Simplex XLs the knob is on the top of the projector head, and on Centurys the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do.
+'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On Simplex XLs the knob is on the top of the projector head, and on Centurys the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do (the MPAA Green Band from a trailer works great for this purpose).
-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.

Jantos at 22:56, 10 December 2016

2016-12-10T22:56:57Z

← Older revision		Revision as of 15:56, 10 December 2016
Line 1:		Line 1:
	'''Ghosting''' 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. Because the image is being "smeared," it reduces perceived sharpness. Very bad!		[[File:Ghosting.jpg\|right\|thumb\|600px]]

			'''Ghosting''' 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. Because the image is being "smeared," it reduces perceived sharpness. Very bad!

			----

			'''Adjusting shutter timing:''' Most projectors have a shutter adjustment knob. On Simplex XLs the knob is on the top of the projector head, and on Centurys the knob is on the front of the projector head (on some models the knob is on the gear side of the projector). Use a SMPTE PA-35 test film or equivalent to check for ghosting. Most image test films will have a white box inside of a black box - adjust the shutter knob until the white box does not spill above or below. If no test film is available, any piece of film with text on a solid colored background will do.

			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.

Jantos: Created page with "'''Ghosting''' 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..."

2016-12-10T22:23:01Z

Created page with "'''Ghosting''' 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..."

New page

'''Ghosting''' 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. This is especially noticeable on films with subtitles, or in scenes with lamps in a dark room, for example. Because the image is being "smeared," it reduces perceived sharpness. Very bad!