my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » SMPTE RP35A and RP110 diffs?

Author Topic: SMPTE RP35A and RP110 diffs? Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 03-31-2013 01:52 PM                     They both seem to be scope alignment/focus loops. What is the difference between the two?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 03-31-2013 05:44 PM                     What are you talking about? What is RP35A? SMPTE has documents that they publish that can lead to test material that has its own catalog number as a material. In the case of RP-110...that is the document that describes a test film for anamorphic alignment. The actual test film is 35-AT This will be analogous to RP40...which is the document that defines/describes the test films called 35-PA and 35-IQ Note SMPTE is NOT the exclusive manufacturer of test material it defines. In fact, the documents are designed such that others can make the test material. NTAV made their own 35mm target film that pretty much followed RP40 (they added some higher resolution targets too). http://www.ntaudio.com/services/projection-target.php Note 35-AT was never really made to the precision of 35-PA (camera original). 35-AT has changed over the years too. It has allowed for magnetic tracks and has had two different centerlines. Most have found its usefulness to a bit more dubious as 35-PA's target evolved to bring about much of the benefits that 35-AT brought to the table.  |  IP: Logged Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 04-01-2013 12:55 AM                     Yes and no. Got the first loop name from the Tips section on Focussing Anamorphics: 1. Thread the loop of PA35 test film into the projector, making sure the loop does not hang in front of the lens. Depending on the particular anamorphic you are using, you may have a small thumbscrew, set screw, or a ring collar at the front of the lens. Loosen the locking mechanism so that you can freely turn the outer focusing ring (labeled with measurements, commonly from 20 feet to 150 feet). Note the current setting before changing it for reference. Sorry about making PA35 into RP35A. Never rush. As far as the RP110, I'm confused. If the RP110 is only a document, then what's this?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 04-01-2013 06:17 AM                     A version of 35-AT test film based on the document RP110. If you procure/obtain a copy of the SMPTE RP-110 document, you'll see how that target was defined.  |  IP: Logged Jim Henk Master Film Handler Posts: 364 From: San Diego, CA Registered: Feb 2006 posted 04-01-2013 08:48 PM                     Understood. Thanks. Didn't know if somehow this was a later upgrade of some kind that people were either recommending or reviling.  |  IP: Logged Bruce Hansen Jedi Master Film Handler Posts: 847 From: Stone Mountain, GA, USA Registered: Dec 1999 posted 04-05-2013 10:42 AM                     SMPTE test films: SMPTE test stuff  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.