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[[quoteright:350:[[Film/ReservoirDogs https://static.tvtropes.org/pmwiki/pub/images/split_diopter.jpg]]]]
[[caption-width-right:350:Notice the blur line in the middle.]]
A diopter is a filter that works similar to a magnifying glass, making a lens focus closer. A split diopter has it on only one side, meaning that one side focuses close and the other farther away. This allows objects at different distances from the camera (usually on the left and right side of the screen) to be in focus simultaneously. (Compare RackFocus where only one part is in focus at a given time.)
Used to great effect in ''Film/TheThing1982'', for example, where dark sets disguised the blurred region in the middle of the split shot. Sometimes used by first-time directors as a way to "show off" their technical skills.
Although it can be, and often is, used as a special effect, a scene as simple as two characters conversing might call for a split diopter (or a tilt/shift lens, which provides a similar effect by allowing the focal plane to be tilted so it is no longer parallel to the film) if the characters are not at the same distance from the camera. Of course, many shots are staged with the characters equally distant from the camera precisely because no special optics are needed.
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!!Examples:
* ''Film/{{Equilibrium}}''
* ''Film/TheLastCastle''
* ''Series/{{Heroes}}''
* Many films by Creator/BrianDePalma.
* ''Film/ReservoirDogs''
* Creator/RobertWise loved to use this effect in his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
[[caption-width-right:350:Notice the blur line in the middle.]]
A diopter is a filter that works similar to a magnifying glass, making a lens focus closer. A split diopter has it on only one side, meaning that one side focuses close and the other farther away. This allows objects at different distances from the camera (usually on the left and right side of the screen) to be in focus simultaneously. (Compare RackFocus where only one part is in focus at a given time.)
Used to great effect in ''Film/TheThing1982'', for example, where dark sets disguised the blurred region in the middle of the split shot. Sometimes used by first-time directors as a way to "show off" their technical skills.
Although it can be, and often is, used as a special effect, a scene as simple as two characters conversing might call for a split diopter (or a tilt/shift lens, which provides a similar effect by allowing the focal plane to be tilted so it is no longer parallel to the film) if the characters are not at the same distance from the camera. Of course, many shots are staged with the characters equally distant from the camera precisely because no special optics are needed.
-----
!!Examples:
* ''Film/{{Equilibrium}}''
* ''Film/TheLastCastle''
* ''Series/{{Heroes}}''
* Many films by Creator/BrianDePalma.
* ''Film/ReservoirDogs''
* Creator/RobertWise loved to use this effect in his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
to:
[[caption-width-right:350:Notice the blur line in the middle.]]
A diopter is a filter that works similar to a magnifying glass, making a lens focus closer. A split diopter has it on only one side, meaning that one side focuses close and the other farther away. This allows objects at different distances from the camera (usually on the left and right side of the screen) to be in focus simultaneously. (Compare RackFocus where only one part is in focus at a given time.)
Used to great effect in ''Film/TheThing1982'', for example, where dark sets disguised the blurred region in the middle of the split shot. Sometimes used by first-time directors as a way to "show off" their technical skills.
Although it can be, and often is, used as a special effect, a scene as simple as two characters conversing might call for a split diopter (or a tilt/shift lens, which provides a similar effect by allowing the focal plane to be tilted so it is no longer parallel to the film) if the characters are not at the same distance from the camera. Of course, many shots are staged with the characters equally distant from the camera precisely because no special optics are needed.
-----
!!Examples:
* ''Film/{{Equilibrium}}''
* ''Film/TheLastCastle''
* ''Series/{{Heroes}}''
* Many films by Creator/BrianDePalma.
* ''Film/ReservoirDogs''
* Creator/RobertWise loved to use this effect in his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
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Adding link to related trope
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A diopter is a filter that works similar to a magnifying glass, making a lens focus closer. A split diopter has it on only one side, meaning that one side focuses close and the other farther away. This allows objects at different distances from the camera (usually on the left and right side of the screen) to be in focus simultaneously.
to:
A diopter is a filter that works similar to a magnifying glass, making a lens focus closer. A split diopter has it on only one side, meaning that one side focuses close and the other farther away. This allows objects at different distances from the camera (usually on the left and right side of the screen) to be in focus simultaneously. \n (Compare RackFocus where only one part is in focus at a given time.)
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* Creator/RobertWise loved to use this effect is his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
to:
* Creator/RobertWise loved to use this effect is in his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
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* ''Film/StarTrekTheMotionPicture'' uses split diopter shots to keep crew members in different areas of the bridge all in focus at once.
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* ''Film/StarTrekTheMotionPicture'' uses split diopter shots Creator/RobertWise loved to keep crew members in different areas of the bridge all in focus at once.use this effect is his films, including ''Film/TheAndromedaStrain'' and ''Film/StarTrekTheMotionPicture''.
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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/split_diopter.jpg]]
[[caption-width-right:350:Notice the blur line in the middle.]]
[[caption-width-right:350:Notice the blur line in the middle.]]
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[[caption-width-right:350:Notice the blur line in the middle.]]
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Examples:
to:
Added DiffLines:
* ''Film/ReservoirDogs''
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[[quoteright:350:http://static.tvtropes.org/pmwiki/pub/images/split_diopter.jpg]]
[[caption-width-right:350:Notice the blur line in the middle.]]
[[caption-width-right:350:Notice the blur line in the middle.]]
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* ''Film/StarTrekTheMotionPicture'' uses split diopter shots to keep crew members in different areas of the bridge all in focus at once.
to:
* ''Film/StarTrekTheMotionPicture'' uses split diopter shots to keep crew members in different areas of the bridge all in focus at once.
once.
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* ''Film/StarTrekTheMotionPicture'' uses split diopter shots to keep crew members in different areas of the bridge all in focus at once.
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* ''{{Equilibrium}}''
* ''TheLastCastle''
* ''TheLastCastle''
to:
* ''{{Equilibrium}}''
''Film/{{Equilibrium}}''
*''TheLastCastle''''Film/TheLastCastle''
*
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* Many films by BrianDePalma.
to:
* Many films by BrianDePalma.
Creator/BrianDePalma.
