On the other hand, you have the practical business of patron safety. As much as we movie mogul type might sit glued to our seats until the last frame of the film, most folk choose to use that credit crawl time to get their butts out of the theatre. Obviously you can't say, well, the film is still running so you are on your own....if you trip and break a leg, too bad, you should have stayed in your seat until the end of the credits. Well, you can say that, but it won't play well with the jury in the "I've fallen and I can't get up and it's the theatre's fault" civil lawsuit that will inevitably flow from an all-lights-out-till-the-last-frame policy. Obviously this is not the solution. You need to bring the house up at least enough so that people are not tripping over themselves.
If one is lucky enough to work in a well designed theatre, the house lighting system will be able to go to a "credits" preset. This is where lighting over the isles can play at a higher level than the seating area and without throwing light on the stage/screen area. This allows people who do want to sit and watch the entire credit crawl, not be distracted by excessive light on them or on the screen. Of course, that's in a perfect world. Most systems have dimmers that simply bring everything up uniformly, or won't allow for a variety of presets. I've been spoiled because all the theatres I've worked in also are live performance spaces and thus have fairly sophistocated lighting systems that you can pretty much set to do anything you want.
In our Cantor Theatre [pictures soon to be posted, right Brad
] we have five settings: FULL, 1/2 HOUSE, CREDITS, SHOW and LECTURE, plus an infinate number of selectable presets that can be customized and assigned to additional buttons if needed. The CREDITS position is just that -- a setting for the credits that brings light up in the isles, just enough for the escapees, while keeping the lights over the audience and stage dim.
Where you don't have those kinds of systems, then I would suggest the best thing to do would be to bring up the lights as high as you need them so that people can see their way out of the theatre safely. You don't what to be named in that lawsuit, stuttering and stammering in the witness chair.
Frank
PS -- Whatever you do, don't use what you see them doing in the multiplexes as a guide to what's the correct thing to do in any aspect of cinema operation.

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A KIWI eats,roots & Leaves.
So, for example, "I am sam" will be projected with no light until children's drawing are shown. Me Myself and Irene until "bad ciaks" will over.
Unfortunately most of the audiences are not interested in meanless credits. So, for example, while the beautiful landscapes of "twister" are shown most of people start rising and people that are watching the images cannot see them anymore.
So in that cases, I'm "forced" to turn on the light after the "directed by" tag.
However also with black titles I usually raise lights after few seconds the "directed by".
Many many theaters in Florence raise light almost before the credits...
I remember Star Wars episode one. One theater turned on the lights while the screen faded with the "circle" (that discovers the "directed by george lucas")...
Same theater turned on the light on Harry Potter WHILE the last image was fading WHILE the orchestra completed the "tutti"...
Terrible.
Only once I tried to keep the light off during "static" credits: customers while were tring to exit, said "why dark?? perhaps lights has gone??" 
Bye
Antonio
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John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: +1 585 477 5325 Cell: +1 585 781 4036 Fax: +1 585 722 7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion
There are also movies with outtakes during some or all of the credits. Now ideally it would be great to hold off on bringing up the lights until the outtakes are over. But it's a judgment call, since some people will want to leave anyway and might need some light to see where they're going.
Paul makes a good point. Some movies (not very many) do affect the audience in a way the causes many to sit through the credits and ponder what they have just seen. Staff should take this into consideration.
And staff should NEVER enter the theater to start cleanup until it's completely empty.
We raise the lights to this level for the credits only after they have established themselves, and this varies according to each movie. Sometimes there's a change in the music, or some picture credits will end, or perhaps static credits turn into rolling credits.
John Wilson's new procedure(tm) is to cue the print at the very start of the credits, then set a delay time on the automation for however long we like until we want the lights to come up. This delay time can be determined with a stopwatch during the first screening. This also has the benefit of standardising print makeup, and allows 'fine tuning' of 'lights up' without touching the cue on the print. Absolutely brilliant, methinks! 
One of the chains I used to work for issued a memo from head office stating that house light are to go to full the moment the first credit hits the screen. Imagine how beautifully that would work for something like 'Taxi Driver' or 'Five Easy Pieces' or the aforementioned 'Royal Tenenbaums'.
As John pointed out, it is a safety issue.
Paul has a good point with leaving the lights low on films that may have affected people. I (and the other projectionists) did that with We Were Soldiers. People do notice that as someone thanked the projectionist working on leaving the lights low.
My manager is always tells us to bring the lights up so the cleaners can get in and do their job when the showing is very crowded. I suppose he can make a good arguement also.
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3% Body Fat. 1% Brain Activity.

The realities are that sometimes cleaning crews have to come in during credits if the next audience isn't going to sit in 
Show schedules sometimes don't allow for sufficient down time between shows. When the number of shows per day is set by the distrib. there isn't much you can do.
Besides, if you go to many restaurants today, you'll find the table clearing, sweeping, and mopping occurs whenever a table empties. I can't think of a single restaurant where tables aren't bussed regularly.
Poor analogy since diners arrive and depart at random times. A better analogy on the restaurant model would be a banquet room and I don't think you'd want them cleaning up while your wedding reception is still in progress just because they booked Joe Smith's retirement party too closely.
The real analogy to the situation is that of live theatre, where the "credits" are the bows at the end of the performance. These usually take only a minute or two and provide feedbak to the performers. Movie credits, the offspring of curtain calls, have become long, dull, boring, stupifyingly slow, tedious credit rolls, touting the wares of everyone right down to the third lacky that served donuts to the crew on alternate Tuesdays.
The public is voting with their feet and our system of self-gratification is too self-absorbed to notice. The white on black credit roll is not art nor is it a movie. If you waited 15 minutes after one and then asked 1000 people who actually stayed to watch the entire credits to name just five names on the roll (that weren't recognizable actors), I'll bet that only a dozen would be up to the task.
If people are supposed to sit and watch credits, aren't film makers and producers supposed to entertain them? "Monty Python and the Holy Grail" had decent credits. Some of the outtake bloopers credit rolls are cute, but for most of the white on black rolls, the cleaning crew is the most entertaining thing in the auditorium.
How many people read a book and then read the index at the end? I'd much rather do that than read some credit rolls.
Who is the arbiter of who gets their name on screen and who doesn't?
I know a guy who left Dynamix and went to work at ILM as a digital artist. His name often shows up buried deep in the special effects credits. Kind of like "One of the 27 Artists Ordered By George To Spend 6 Weeks Adding Another Storm Trooper To Scene 17, Frames 97 Thru 145". I say they all worked directly on what showed up on the screen, so by George they deserve their names in the credits!
Is the exit music timed to the credits, or is it the other way around? Sometimes it seems like when a film has a particularly good symphonic score, the end credits are timed to match the length of a musical composition.
Whilst the people do deserve their do, I don't consider it part of the film or entertainment. They are like the bibliography to a book...not required reading but there if you are interested. Back in film's glory days, after the "THE END" card came up, that was it, the show was over....on some occasions, there may be "The Players" that lasted a couple of seconds. Heck, even Apocolypse Now for the original 70MM engagements did not have ANY end credits but there was a hand out card. Now that is a way to give people their credit without the imposistion. Kinda like a live stage show. There are a whole bunch of people that go into a live production but only the "talent" takes it's bow, not the crew yet the play bill does list the crew.
With that said, I also agree that the clean up crew should NOT come into the theatre until the film is over, curtain closed (and if you don't have a curtain, GET ONE!)...intermissions should be scheduled to provide for the clean up and if that is just so impossible, please stay out of the way and don't block those people that actually wish to read the credits!
Therefore, in the desire to accommodate all, I too side with raising the house lights some to allow a safe exit yet not fully to make reading the credits impossible.
Steve
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"Old projectionists never die, they just changeover!"
What i find over here in the UK is that when the credits roll, the audience interpret that as their cue to leave, and sometimes it seems like they believe first out the door wins a big prize, even if it means second guessing the ending and starting to get up when it seems the film is wrapping up!
So you can understand when i tell you that customers often APOLOGISE for watching the credits, because they either wanted to know where it was filmed, what that song they really liked was or because they wanted to see the name of their second cousins girlfriends hamster in the credits!
who can't, should be welcome to break a leg or two on their way out in the dark - but next show will be delayed, while waiting for the ambulance to come, -and therefore: a little bit of light to let even them safe to the exit...
I do, however, consider it rude to turn on the cleaning lights during the credit rolls.
I know of several people who will sit and watch the entire credit roll. Maybe they are looking for a certain thing, or maybe they are just listening to the music. Some of the music is quite nice. 
Whatever the case may be, the people who buy tickets are entitled to see the entire film from beginning to end. That also includes the credits.
I have never heard of one complaint because we raised the houselights to half mast during the credits. However, I have heard of complaints of staff coming in to clean the auditorium during the credit roll.
Several times when I was running a booth, the manager or owner came into the booth and told me to snap off the credits so the people would get up and leave.
I think you all know what my answer was.
Well, I was never removed from my booth, nor was I ever going to be, shall we say, over-ridden? 
Management generally figures out it is a waste of time bothering me with such an assinine request.
Steve
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"Old projectionists never die, they just changeover!"
Back on topic though: At the single screen art theater I worked at, our wall sconces were actually five different circuits, each a different color, each controlled seperately. Each sconce had about seven of each color bulb in it. It was really cool, i'll try and get a photo to post. Anyway, At full bright, the yellow and white bulbs were on. At half, the red and yellow, and "presentation" was blue and green. When the credits rolled, green and yellow, and then back to yellow/white. It worked extremely well, and always got "oooh-ahhhh's" from the crowd.
-Adam
I think the speediest credit scroll is in one of the "Cheech & Chong" movies. Maybe it was "Still Smoking", there's a film within the film and credits go up so fast you can't see any of it except white lines just speeding up.
Main titles for "The Shining" are blue and goes from top to bottom. In "M.A.S.H." and "Farenheit 451" they are spoken. Saul Bass' "West Side Story" end-credits are beautiful in Super Panavision 70.
For those of you who haven't had the experience, it's a nice feeling to see your name on the credit scroll.
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Cheers, Thomas
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Maybe we could add "Best opening or closing title sequence" to the Film-Tech awards.
-Adam
A nomination for best (most effective) opening credits: Se7en. This includes not just the title design but Howard Shore's musical score that accompanied the titles.
By the way - the manager that scheduled that 6 minute intermission ought to be shot. 30 is the absolute minimum to allow for efficient cleaning and seating.
Death to Smoochy: When the screen goes black after the ice dance at the end, just as the song "Higher and Higher" by Jackie Wilson fades out. The AMC Hamilton put the lights-up cue at the start of the ice dance. Not distracting that way but easy to notice.
Monsoon Wedding: When the screen goes black before the end credits/wedding ceremony start. Otherwise it'll distract.
Gosford Park: The credit roll starts while the camera pans the countryside. Ideally you should wait until all the credits are done. The AMC Hamilton placed the lights-up cue at the start of the end credits -- and that tended to distract.
Michael Barry said: "John Wilson's new procedure(tm) is to cue the print at the very start of the credits, then set a delay time on the automation for however long we like until we want the lights to come up. This delay time can be determined with a stopwatch during the first screening. This also has the benefit of standardising print makeup, and allows 'fine tuning' of 'lights up' without touching the cue on the print. Absolutely brilliant, methinks!"
Brilliant, indeed. Whay type of automation?
Michale also said: "One of the chains I used to work for issued a memo from head office stating that house light are to go to full the moment the first credit hits the screen. Imagine how beautifully that would work for something like 'Taxi Driver' or 'Five Easy Pieces' or the aforementioned 'Royal Tenenbaums'."
Was this by any chance AMC? I've only seen one movie at AMC, but that's exactly what happened, and it was *extremely* anoying! The lights didn't even fade up, they just came full on right away! Grrrr....
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This one time, at Projection Camp, I stuck a xenon bulb....
Congrats about your job!
The automation we use is the Multimation III, which is Windows based software that communicates directly with AMX Axcess(tm) automation hardware. Perhaps John and I should work on a product review! The Christie/Pennywise unit that is reviewed on this site has a similar 'delay' capability that allows a film cue to be read but a delay to kick in prior to the intended function being performed (in this case, lights up). I'm not sure how long a delay can be set in those units, but the principle is the same. Often Kinoton consoles come with this unit so you might be able to use the same technique at your new job.
The chain that I referred to is Greater Union, which I think only exists in Australia and perhaps a handful of other territories (they are expanding now). I would think that many chains would adopt that policy, however.
Does your new location use Filmguard? If not, get some! 
Only our projectors are Kinoton. Our consols and automation are Big Sky. Out of curiousity, do you know if that delay can be done with the Strong CNA 150 or 200?
We have a media cleaner. I'm going to ask about Film Guard once I start working there.
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This one time, at Projection Camp, I stuck a xenon bulb....
I'm not familiar with the strong automation units, but Pat Moore will most likely have the answer.
and recall the Credits were sooooo long that I was wishing for them to end 
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A KIWI eats,roots & Leaves.

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A KIWI eats,roots & Leaves.
Of course, it depends a lot on the picture and venue. I have noticed on Woody Allen films, for example, that most if not all of the audience tends to stay until the last credit.
One runs the risk of strangulation by the director if one brings up ANY lights during the credits at the Toronto Film Festival. These performances, of course are run manually without automation.
Using CPA-10 automations, I used to set the timer so that the house lights came up to pre-set on the credit lights cue and then up full at 1:30 min. after that.
The point of cue insertion is variable...some credit sequences (like the ones in Disney/Pixar movies) have outtakes and some (like those in WILD THINGS) occur with additional scenes still playing. Patrons who were moved by tear-jerker endings would probably appreciate it if we wait a few extra moments before raising house lights. It's a matter of taste and there really are no hard-and-fast rules.
Still, the issue of safety inevitably presents itself and, at some point early in the credits, the lights simply must raise to at least half. We have our automations set up to raise lights to "House Half" upon receiving the credits cue, and then there is a one minute delay before raising all the way to "House Full." By this point, there is nobody in the auditorium...unless the crowd is so large that they are *still exiting*...but the point is that only a few people read credits here and those few who read them have never complained that we raise the lights during the credit roll. In any event, their desire to read credits is outweighed by our need to allow two hundred and fifty people to exit safely (especially when one considers that raising the lights does not render the credits illegible).
Cleaning should be forbidden if patrons are reading credits. If the room is empty, then the ushers should certainly go ahead and start cleaning early.
But the credits are part of the movie and they must be played. It's the same as starting a show with nobody in the auditorium. Just because nobody is there, doesn't mean we're off the hook and don't have to run the show. Someone might come ten minutes late...similarly, a viewer might come back into the room to read those music credits that are always near the end.
A competing cineplex cuts the credits off...you couldn't read the credits even if you wanted to. They also don't play the opening studio logos. And these aren't "Bid Prints" either...I've checked. I know their "chief projectionist" personally. We used to work together and he's always had a distaste for showing credits...especially on the last show of the day. The lights come up about a minute before the final fade, the credits play for about another minute and then...whoosh...they're gone and the screen goes white.
Say whatever you like about us playing credits with the lights all the way up...and say what you might about us playing trailers with the lights at half. What we're doing is certainly a compromise...but what those other guys are doing is poor showmanship due to sheer laziness. Not to mention that it probably constitutes a breach (sp?) of contract. That's DEFINITELY NOT "film done right."
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And, hey! Let's be careful out there.
~Manny.
The health and safety argument - that 90% of the audience will walk out during the credits and so the lighting is necessary for them to get out in safety - is a flawed one. After all, if there is a power failure in the middle of a performance, perhaps due to a fire, then 100% of the audience will need to get out without any help from the houselights. If the primary maintained (i.e. battery powered) lighting is not bright enough for someone with average sight to see their way out, then that theatre is a serious safety risk. Furthermore, by leaving the houselights out during credits you are constantly testing the PMLs and ensuring that they are sufficient to allow a house full of customers to leave in safety.
However, if you buy your local service technician a beer or two, he might be able to provide you with a second sensor, which could be used to pick up cues from the edge of the film, (along the sprocket holes).
This sensor could be independantly wired to pulse whatever function you wanted to happen. (P.S. I have found old garbage Scope aperture plates can be bent and mangled into excellent emergency sensor brackets).
Depending on the current and voltage this sensor would be required to drive, an interface relay may be required.

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A KIWI eats,roots & Leaves.

If the film is really busy (like 1000+ customers in our main screen), then our GM might request that we have 'Credit' lights on during the ads and trailers only. But our lights aren't designed too well, and they can easily shine on the screen, so we don't do that often. Plus, our contract with our advertisers states that the ads must be played 'in the dark' (and at Dolby level 7, yeah right!).
I will admit though that at my last cinema, I sometimes put the house lights on towards the end of the end credits if it was the last show, but only if I didn't have any time and my taxi was coming soon!
But I didn't put on any lights that would shine onto the screen, and I don't do that anymore.
I agree that if your standard 'emergency lights' aren't enough for people to leave safely during credits, the film, or an actual emergency, then you shouldn't have the public in your building anyway.
As for cleaning the screen during the credits, I never used to clean or turn on the cleaners lights until everyone had passed me by at the exit. Unfortunately I've noticed not every usher today is so polite. In just 2 years I've been in booth, I've had a moan at many an usher for turning cleaners lights on before the curtains have even closed! It can bloody hurt your eyes if bright halogen lights come on when you've been in the dark for 2 hours!
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Michael Swarbrick
Projectionist, Empire Leicester Square
None of the managers wanted to tackle her about it becuase she'd cause a scene and complain that we were victimising her.