Copying Movie Film to Film

For quite a few years now, I've been using simple home-made set-ups to copy my films onto other film. Why would anyone want to do this you may ask... Mostly, folks are busy transferring it all to digital.

Making the apparatus in its simplest form takes only a few hours and it's cheap. It means that the original film is copied in 100% sync with no flicker or density fluctuation. But what are the reasons for doing this ?

Firstly, if like me you still enjoy editing on film, it makes good sense to use a cutting copy which can be cut and recut and generally thrown around the place, secure in the knowledge that the original is not being harmed in any way. (Later you carefully cut the original to match.) Using out-of-date film you can easily make economical cutting copies.

Secondly, Special Effects. And there are countless possibilities here. For example, you can add a zoom or other movement to a shot, even make a static scene appear hand-held ! Add distortions, colours, foreground miniatures. Add moving silhouettes, bi-packing another strip of film in the projector. Place a shot into another live action shot so that the composite is seamless. The only effects you can't do are those that require altering the apparent speed, because the copying camera is anchored to the projector.

Every movie camera and every projector has its own one-to-one shaft. This system merely involves joining them together, so that they are locked in sync. You can do the job without the join, but there is likely to be sync-loss and other problems. Project onto a small card screen or a good translucent one. It's the same as copying onto video, and for more on this please click on "2008" and see "Telecine Without Tears".

Because all cine apparatus is basically made the same, you can copy ANY gauge of film onto ANY other. So you could copy a 28mm film to 9.5mm if you so wish ! And vice versa I suppose if you could find some 28mm film at Jessops. So film format doesn't matter, all you have to do is find an easy way to join up the 1:1 shafts. What does the 1:1 shaft look like ? If you take the side off a projector (not forgetting to remove the mains lead!) you'll most likely see a rod running its length, carrying the spinning shutter. Sometimes it culminates in an inching knob, and if so this is usually a good point to attach a flexible shaft, perhaps removing the knob first. I've been using old car speedo cables as flexible shafts, and they work well. Some sort of tough collar is needed to lock the shafts together securely with grub screws.

The camera 1:1 shaft is perhaps less easy to reach. Super-8 cameras usually seem to sprout a shaft near the front end. If you're worried about losing those screws and destroying a perfectly good camera trying to find it, why not experiment with a cheapo model ? All you need is a camera that produces reasonable images, perhaps with a close-up lens fitted, and it doesn't even need to have auto exposure. In fact, manual exposure is a must for copying. I'm always testing super-8 cameras, and I reckon that probably one in five of the ones that appear to work have defective auto-exposure... they usually end up in the 'as found' box or worse. But many of these sorry specimens still work on full aperture, so they could be used as copiers. As projector lenses are generally not as good optically as camera lenses, it makes sense to adjust the projector aperture by a stop or so, use the black card washer trick... see that Telecine article again.

So we end up with camera and projector (perhaps running the same film-size, perhaps not) connected by a flexible shaft. Maybe I should say they have to be connected so as to both run film in the same direction! Unless you want reverse effects. Some projector shafts will allow both ends to be utilized. It goes without saying you'll be cutting holes in your projector. The camera is run entirely by the projector-motor, in perfect sync. Turn the projector shaft by hand to check that the shutters are correctly phased, so that they both open simultaneously. One of the collars may need adjusting for this. Projectors normally sport two or three shutters but only one is used to hide the film transport. This is the one that corresponds with the camera-shutter. The others are superfluous for copying film and only absorb light, so could be snipped off if you don't mind a flickery picture (this flicker is not seen by the synchronised camera !) Because the camera is on a flexible shaft it can be set up almost anywhere as long as the shaft doesn't tie itself in knots. The projector can go at any speed and it's often best to keep it fairly slow.

Putting a shot into a new scene is possible by placing a screen or card somewhere within the frame and projecting on that, preferably at a normal speed. Have a go ! Next time I'll maybe show you my 16mm copying set-up.

Telecine Without Tears - Film to video the cardboard way

TELECINE WITHOUT TEARS

Film to Video the Cardboard Way

Putting cine movie-film onto video/DVD can cost quite a lot if it's done professionally. And unless you use a reputable lab, results can vary, together with a risk of losing or damaging your film.

It's relatively easy to do your own telecine transfers. And the quality can be impressive. Here's how.

What you need

A camcorder, a movie projector that has constantly variable speeds, and a piece of good quality cardboard ! A lot cheaper than a telecine translucent screen and probably better, without grain or hot-spot problems.

Getting the Speed right

You can use a projector with non-variable speeds, but the chances are you'll notice fluctuations of the light in the video image. Still there's nothing to lose in giving it a try, and your projector just might have more-or-less the right speed regardless of what it says ! However, it's best to be able to vary the projection speed if you want to be sure of constant image density. The speed should be very near 16.66 frames per second, or 25 frames per second. This is if you have 50 cycle mains electricity. In the USA it's 60 cycles, so the speed needs to be 15, 20 or 24 f.p.s.

So first you have to decide what speed the film was taken at. Silent films are normally shot at 16 or 18 f.p.s. Sound films could have been shot at any speed: 16, 18, 24 or 25. If you are unsure, just project the film and see if the folks move around normally. In practice, it doesn't really look wrong if the film was shot at say 18 f.p.s. and you project at 16.66 f.p.s. And 24 looks exactly the same as 25. How it sounds is a different matter, but more of that later. Choose your transfer speed nearest to the original filming speed.

Improving the Image

It obviously makes sense to start off with the best quality image. Rather than projecting a big image on a screen, find a piece of good white card a few inches across, certainly no more than a foot, and focus the projector on that. If your film material is rather contrasty, try using a cream-coloured card. Another way to reduce contrast is to introduce into the room a bit of ambient light.

The projector should give a very evenly-lit image. Normally, your eyes adjust to a film image that is perhaps bright in the middle but tailing off towards the edges. But the camera's eye sees what it sees, and consequently the image will look odd. The earlier projectors with conventional tungsten lighting and condenser lenses, often give more even lighting than halogen projectors without condensers. If your projector gives uneven lighting, try putting a grey water-colour wash onto the centre of the card, softening off towards the edges. Or, in front of the camcorder or projector use a piece of optical glass or filter that has been darkened in the centre.

The projector zoom-lens should be set at a long focal length. Alternatively, use a fixed focal length lens. If you are projecting 8mm, try using a 16mm projector lens of say 35mm or even 50mm focal length. Now.... as you are showing a small image you have light to spare.... Make a black card or paper “washer” that fits neatly into the end of the projector lens barrel. It should be right up against the front lens element. Don't make the hole in the washer too small, but enough to effectively close down your lens by a couple of f-stops. This will give a quantum leap in definition ! Why ? Because it's like a camera-lens.... the sharpness improves when the outer parts of the lens are not in use. All lenses work better when stopped down. On a normal size of screen it would give a rather dim image, of course, but it's bright enough on our cardboard screen.

The Transfer

So now, hopefully, we have a nice sharp evenly-lit image that shows the cine film at its best. Before the transfer, it's a good idea to thoroughly clean the film with special film-cleaner if it needs it, or at least remove dust with a soft cloth.

Firmly set up the camcorder somewhere near the centre-line of the projector, perhaps behind or just above it. If above, beware of ripples of heat from the lamp-house ! The lens on the camera will be at a long focal length setting, so that the projected image fills the viewfinder. Manually focus on some news-print held against the card, and keep this focus setting for the actual transfer. Key-stoning of the image shouldn't be a problem as you are situated well back from the small screen. When you are satisfied that framing and focus are perfect, turn off the lights and begin the transfer. Ideally the camcorder's exposure should be set manually to one aperture for the whole film.

Examine your results on a fairly large video screen. If you still see density fluctuations, fine-tune the projector speed and try again. With care you'll end up with a good, sharp telecine, that looks professional.

Sound

If the film carries a sound track, you can connect the sound projector to the camcorder and record in sync. How you do this in order to get a good track on video is outside the scope of this blog. However, coming back to the projector running speeds.....Whereas our eyes are easily fooled by a slightly wrong speed, our ears usually are not ! A sound track recorded at 18 f.p.s. for example, will most likely sound wrong at 16.66 f.p.s. So it may be best to transfer the sound independently to the computer, then lay the track onto the video, making sync adjustments as necessary. Maybe others would like to comment....