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Test film: Difference between revisions
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* SMPTE RP-40 | '''Test films''' are tools for calibrating, aligning, and checking [[:Category:Projectors|film projectors]] and their components. Issues that can be [[:Category:Troubleshooting|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]]. | ||
* SMPTE RP-91 | |||
* | 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|scratch test]]. | |||
[[File:SMPTE text.jpeg|frameless|right|thumb|300px|]] | |||
==Common types of test film== | |||
* SMPTE RP-40 - Visual focus test film for 35mm | |||
* SMPTE RP-91 - Visual focus test film for 70mm | |||
* SMPTE P35-BT - [[Buzz Track]] - Sound test film to set lateral position of film in the soundhead. | |||
* Dolby CAT. NO. 69P - Pink Noise test film (contains all frequencies) used for focus and azimuth adjustment of the slit lens | |||
* Dolby CAT. NO. 69T- Dolby Tone test film | |||
* Dolby CAT. NO. 97 - Stereo cell alignment film used for measuring crosstalk between the left and right channel. | |||
* Dolby CAT. NO. 151 - Surround test, used for a subjective comparison of the levels for the center and surround channels. | |||
==Images== | |||
'''click to enlarge''' | |||
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: 16mm_test_film.jpg| 16mm test film (BLS 1682). | |||
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: Ghosting.jpg| 35mm [[Ghosting|Travel Ghost]] test film. | |||
FILE: travel ghost can.jpeg| Can of SMPTE [[Ghosting|Travel Ghost]] test film. | |||
File:CinemaScope Test.png|CinemaScope test film used for anamorphic adjustment. | |||
File:NaturalVision 3DAlignmentTest.png|Test film for aligning the left- and right-eye projectors for Natural Vision dual-strip polarized 3D. | |||
File:3D test loop.JPG|Alignment test film for over/under 3D. | |||
File: Rp91.jpg| SMPTE RP 91 5/70 test film. | |||
File:70MM test.JPG|Boston Light and Sound 5/70 test film on screen. | |||
</gallery> | |||
==Sources of test film== | |||
* [http://www.blsi.com/ Boston Light and Sound] | |||
* [http://store.smpte.org/category_s/5.htm?searching=Y&sort=7&cat=5&show=100&page=1 SMPTE] | |||
* [https://www.schneideroptics.com/ecommerce/CatalogSubCategoryDisplay.aspx?CID=81 Schneider Optics] | |||
* [http://www.rsem.com/equipment-list.asp?category=test%20film%2Fequipment&show=all&page=1 R.S. Engineering] | |||
* Ebay! | |||
==Other Resources== | |||
*[[Media:Smpte-test-materials-catalog.pdf|SMPTE Test Materials for Motion Picture and Television catalog (c.1985)]] | |||
*[[Media:SMPTE Test Film 35-PA & 35-IQ (1996).pdf|SMPTE Test Film Program: 35-PA 35mm Projector Alignment Test Film & 35-IQ 35mm Image Quality Test Film (1996)]] | |||
==See Also== | |||
* [[Buzz Track]] | |||
==External Links== | |||
* [http://lucyraven.com/RP31 RP31] 35mm film installation by artist Lucy Raven involving various test films. | |||
[[Category:Tools]] | |||
[[Category:Film prints]] | |||
[[Category:Projectors]] | |||
[[Category:Showmanship]] | |||
[[Category:Troubleshooting]] | |||