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Author
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Topic: Hey you, you suck! (AKA: Outing bad film handlers) Part 2
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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 01-20-2010 06:10 AM
RP40 does not specify either, nor should it. RP40 only specifies the target for the film it discusses.
The other issue is, if you have masking, do you set your masking (talking about the 1.85 ratio for the moment) to .446 x .825 or do you set your masking such that your aperture plate never reveals more than .446 x .825 (so if you were to pull your masking away, you never revel more than .446 x .825. I claim, the image size is only defined for .446 x .825...that is the MAXIMUM projectable image size...anything beyond those dimensions do not have to be a suitable image...including boom mics, time codes, guard bands (lines)...etc. Furthermore, any excess image should be used to ensure that jump and weave are completely hidden.
As for image on the masking...that really is determined by the lamphouse/reflector, lens and aperture to film-plane of the projector...it isn't really a user controllable criteria (presuming one cuts the plate until they just hide all of the shadow on the masking).
Furthermore, for SMPTE to define shadow on the masking, the masking's absorption would need to be defined. The material most use (duvetyne) pretty much sucks after the 1st year...it starts turning gray and shrinks...I can clearly see the image on it. Personally, I find seeing a lot of image on the masking much more distracting than seeing some shadow. Masking should square up the corners and hide any raggedness of the aperture and, if possible, hide the shadow of the aperture plate.
This is an area where DCinema clearly wins! Also 70mm has VERY thin aperture shadows owing to their typically long focal length lenses.
Steve
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Scott Norwood
Film God

Posts: 8146
From: Boston, MA. USA (1774.21 miles northeast of Dallas)
Registered: Jun 99
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posted 01-20-2010 12:18 PM
So, to summarize, the Steve-Louis-Brad recommended method of cutting plates and setting masking stops is as follows:
- align lamphouse relative to projector, and roughly align reflector without installing lens - center lens eccentric (Century and 35/70 projectors only) - set focus knob to center position - install scope lens - install scope aperture plate - run white light and tweak lamp alignment - run RP40 (err...35PA) - focus anamorphic - set focus ring on lens collar (or as appropriate depending upon lens mount) - center image on screen (using offset lens collars or other methods as necessary) - open masking completely - file aperture plate until edges of frame are just barely visible - run white light on screen - bring masking in until masking just covers aperture shadow - set scope masking stop - repeat for 1.85, 1.66, Academy, 70mm and other formats as needed, setting masking stops for each - repeat for additional projector(s)
Is this more-or-less correct?
(I am making the assumption that the projector is either new or rebuilt and that the intermittent sprocket, gate, and trap are already in proper alignment. I am also making the assumption that the projector in question is not a Norelco, which I am told requires that 70mm be the first format to be aligned.)
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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999
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posted 01-22-2010 11:17 AM
Throw out the duvetyne; it sucks at absorbing light and as Steve says, it fades. You want to use black satin instead -- this stuff is like a freakin black hole. Nothing shows up on it, and an additional, welcome characteristic -- it is lightweight. Your rigging doesn't need to hold an elephant. It allows you to use nice little short-cuts like being able to attach the track directly to the screen frame and to use a really light-weight track like the ADC's Specifine 1000 series. Plus, it's a piece of cake to work with. And the black never fades. Good stuff; I believe it's a bit more expensive that your standard duvetyne or velour (at least the light-weight velour) but I think it is well worth it.
One last little finishing touch not mentioned in the now pretty complete list everyone has come up with on how to cut plates -- when cutting for dual projectors in C/O operation, you want to be sure to mark the plates as to Projector 1 and Projector 2. Without clear markings, they could easily get mixed up and all the precise filing will be for naught, at least for the first show until you can change them back to the correct projectors.
I go one further; I color-code the plates for each aspect ratio. First I use a single wrap of color electrical tape around the lens barrel so that when the lens is seated in the head, the color is visible. Then I paint the bakelite handle of the matching plate with the same color. The Simplex plate handles have a round indentation in the middle of the plate, so even though the handle is painted Yellow for 1.85, for example, there is a Black dot in the center of the handle for Projector 1 and a White dot in the center of the handle for Projector 2. Someone would have to have the IQ of a house plant to not match the correct plate with the correct lens. I use plastic model kit paint -- it holds up well in the heat and retains the color for years.
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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99
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posted 01-22-2010 11:57 AM
Scott,
Some notes...
You should ALWAYS run PA35 with the 1.85 lens (whichever non-anamorphic is the widest in the auditorium) to precisely level the projector...THEN start working on the anamorphic. This prevents the anamorphic movies from being skewed. Even just a "letterboxed scope ratio" flat trailer works quite nicely for this...no need to wear out your expensive PA35 loop.
Also before you decide the anamorphic is level, be sure to run a loop of a "flat matted/pillarboxed" trailer. That is what the customers will see. Often on changeover setups what appears to be level on the PA35 will look skewed to the viewers. This is why measuring the center horizontal line to the bottom of the screen or floor is a good time waster. In the end you must make it LOOK right, even if you have that line intentionally skewed an inch or two off. Just make it so that the pillarbox lines appear as parallel to the side masking as possible (within reason, there are situations with excessive keystoning that you may have to make a compromise).
The fine alignment (preferably laser) of the lamphouse/reflector must be done before you start working with the lenses too. Adjusting that later will destroy everything.
When centering the PA35 on screen for dual projector setups, do NOT use a piece of tape on the screen/masking to denote the "centerline". That is just silly. In real life, the left projector will keystone towards the right and vice versa. Use the exterior lines to center the image post-keystoning. Otherwise you will be unnecessarily cropping on the opposite side of the alternating projector.
When setting the anamorphic, be sure and throw the astigmatism way out of focus to an extreme (whichever end is the blurriest), then set your projector focus on the horizontal lines, then bring the astigmatism adjustment into focus. Don't forget your binoculars!
Also shimming is sometimes needed of the lenses, lens mount or gate depending on the keystoning of the projector. A well designed turret like the Christie makes it incredibly easy to achieve absolute perfect focus in all 4 corners, even with fast lenses, regardless of the angle, but it can be done on single barrel systems. (Do note not all turrets are alike. For example the Kinoton turret is just flat out awful to setup and fine tune.) Again, don't forget your binoculars or a telescope for this. What looks in focus to you isn't necessarily what the audience sees.
Align ALL lenses to be used in the projector BEFORE cutting the first plate. Otherwise you are setting yourself up for less-than-ideal end results. You should be able to leave a loop running and with no aperture, swap-out every lens multiple times (and even switch between 35mm and 70mm) without having any need to touch the focus control OR framing knob. If you can't, you have failed. Try again until you get it. Bear in mind once you think you have it down, don't start filing yet! Leave each lens in there for a few minutes to let it heat up and then see how it looks.
ALL of this must be done before the first aperture is filed. Remember, the time spent (or not spent) on the initial install will affect EVERY performance that auditorium will present in the future.
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Manny Montes
Master Film Handler

Posts: 270
From: United States
Registered: Feb 2010
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posted 02-11-2010 07:57 PM
Whoever had print #0325 of Nine broke it down terribly. First of all, smudges all over the print, did they run it through their fingers the entire time? while eating fast food? Second of all, tons of yellow zebra splices in the middle of the reels (clear tape was invented for a reason). Seems as if they dropped it on the floor too, it's very dirty Third, platter scratches galore and slight stretching of the film. and finally, masking tape attaching the Tail/Head to the film, leaving great residue all over the film.
Running it through some film-guard tonight to see how it looks after, if its still poor, then I'll be calling for a replacement print tomorrow. Also, the rating tag at the end was completely removed?
And when I went to lift the film can the riveted lock part popped off and the can broke in two. Not a good day
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Frank Angel
Film God

Posts: 5305
From: Brooklyn NY USA
Registered: Dec 1999
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posted 02-26-2010 11:33 PM
The theatre posts the Ratings for each film at the box office; they post the Ratings in the newspaper ads; Ratings are announced in the telephone movie hotlines. By the time the customers have paid for their tickets and are sitting in their seat ready to watch the movie, they either know what the Rating is, or they don't care. Certainly they are not going to run out of the theatre in horror and wanting their money back because they see the Ratings tag AFTER the movie is over. The idea of needing to show it AFTER the movie really seriously begs rationality.
So, what I am saying, Manny, is the world won't slip off it's axis if your presentation doesn't include the Rating snipe after the film. If it's one of those rarities where the Rating snip appears at the BEGINNING of the film, well that anti-presentation making nonsense is what splicers are made for.
There is also quite a good thread you might search for about whether or not to use Rating snipes on trailers. The majority seem to favor them, I am in the minority -- I think trailers of the same Rating level need only have to have one before the first snipe. Ideally I would love to have Ratings snipes that said "The Following TrailerS are Rated ?" You would only need one before any group where the level is all the same, not between each and every trailer. For people who don't like to watch trailers (many) the redundency of the Rating snipe just calls more attention to them. Plus, they are always WAY to long for "read time," How long does it take to read the letter [R] or [PG-13]? But that's just me. And you already know what I think about putting a Rating snipe on the main feature -- at either end.
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