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Test film: Difference between revisions
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'''Test films''' are tools for calibrating, aligning, and checking [http://www.sprocketschool.org/wiki/Category:Projectors film projectors] and their components. Issues that can be diagnosed and corrected with the guidance of test films include [[ghosting]], [[focus]], [[framing]], and pedestal adjustments. They are sometimes used in conjunction with [[test equipment]]. | '''Test films''' are tools for calibrating, aligning, and checking [http://www.sprocketschool.org/wiki/Category:Projectors film projectors] and their components. Issues that can be diagnosed and corrected with the guidance of test films include [[ghosting]], [[focus]], [[framing]], and pedestal adjustments. They are sometimes used in conjunction with [[test equipment]]. | ||
The term generally refers to films made by technical bodies like [https://www.smpte.org/ SMPTE] or by manufacturers like [https://www.schneideroptics.com/ecommerce/CatalogSubCategoryDisplay.aspx?CID=81 Schneider Optics] specifically for test purposes. | The term generally refers to films made by technical bodies like [https://www.smpte.org/ SMPTE] or by manufacturers like [https://www.schneideroptics.com/ecommerce/CatalogSubCategoryDisplay.aspx?CID=81 Schneider Optics] specifically for test purposes, which are designed to help to calibrate your equipment so that it adheres to a certain set of image or audio standards. | ||
In practice, term may also be used more casually to refer to any piece of footage used to test a projector, such as a fresh trailer used to conduct a [[scratch test]]. | |||
[[File:SMPTE text.jpeg|frameless|right|thumb|300px|]] | |||
==Common types of test film== | ==Common types of test film== | ||
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==Images== | ==Images== | ||
'''click to enlarge''' | '''click to enlarge''' | ||
<gallery widths= | You may notice some of them are dirty, it's because they've been used many times! As they should be. | ||
<gallery widths=200px heights=200px mode=packed> | |||
File: Rp 40.jpeg| SMPTE RP 40 35mm test film. Used for evaluating optical alignment, timing, framing and focal registration. Can be used to evaluate jitter and weave. | |||
File: Schneider test film.jpeg| Schneider Optics 35mm frame and focus chart. Used for evaluating optical alignment, timing, framing and focal registration. Great for evaluating contrast performance. | |||
File: 16mm_test_film.jpg| 16mm test film (BLS 1682) | |||
File: Ghosting.jpg| 35mm [[Ghosting|Travel Ghost]] test film | |||
FILE: travel ghost can.jpeg| Can of SMPTE [[Ghosting|Travel Ghost]] test film | |||
File: Rp91.jpg| SMPTE RP 91 5/70 test film | |||
File:70MM test.JPG|Boston Light and Sound 5/70 test film on screen | File:70MM test.JPG|Boston Light and Sound 5/70 test film on screen | ||
</gallery> | </gallery> | ||
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==External Links== | ==External Links== | ||
* [http://testfilms.tumblr.com/ Tumblr page] on test film history | * [http://testfilms.tumblr.com/ Tumblr page] on test film history | ||
* [http://lucyraven.com/RP31 RP31] 35mm film installation by artist Lucy Raven involving various test films. | |||
[[Category:Tools]] | [[Category:Tools]] | ||
[[Category:Film prints]] | [[Category:Film prints]] | ||
[[Category:Projectors]] | [[Category:Projectors]] | ||
[[Category: Showmanship]] | |||