Further Experiments in DIY Cine Film Scanning.

On and off over the last decade I have been messing about with various ideas and methods for digitizing cine film using homebrew technolgies. My efforts have been focussed on Super8 and laterly on 16mm formats. The aim of all this,is mainly to make shooting on these film formats more affordable and time-efficient too.

Around 2008 I was playing around with the adapted cine projector, frame by frame PC grabbing technique. It was difficult to set-up and the video cameras of that era tended to be just SD resolution. I also ended-up 'adapting' my poor old Chinon projector beyond repair.
http://www.chrisgavin.com/2008/09/diy-tk-set-up.html

I leapt back into this a couple of years ago with a new device. I began experimenting with getting some components 3D printed and learning a little bit about electronics and Arduino too. By 2018, this device was looking like this...
http://www.chrisgavin.com/2018/06/the-old-diy-super8-film-scanner-project.html

In recent months, I've been back on the case with renewed vigour and have been documenting my tests/expirements a little as Instagram posts. Here' I'll collect together and share some of this work...

19/09/19 EXPERIMENT
Using a photosensor and Arduino to detect the sprocketholes in some 16mm movie film.

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A post shared by Chris Gavin (@chrisgavinfilms) on Sep 19, 2019 at 6:04am PDT

21/09/19 EXPERIMENT
Using the Arduino board to trigger the shutter of a Panasonic Lumix GH4 camera to take still photos.

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A post shared by Chris Gavin (@chrisgavinfilms) on Sep 21, 2019 at 4:17am PDT

23/09/19 EXPERIMENT
A 3D printed film gate for 16mm cine film. The photo sensor from the earlier experiment is now built into this.

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A post shared by Chris Gavin (@chrisgavinfilms) on Sep 22, 2019 at 4:43am PDT

21/12/19 EXPERIMENT
I've added a continuous rotation servo motor to move the film backwards and forwards through the film gate. I'm using Processing code here to run this from my PC with a simple GUI.

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A post shared by Chris Gavin (@chrisgavinfilms) on Dec 21, 2019 at 9:04am PST

30/12/19 EXPERIMENT
Now we can see these elements from the previous experiments put together. The servo motor moves the film. The photo sensor detects the sprocket holes and the GH4 camera is triggered to take a photo. All of this is controlled by an Arduino, a little bit of circuitry and Processing code running on the host PC.

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A post shared by Chris Gavin (@chrisgavinfilms) on Dec 30, 2019 at 5:09am PST

CONCLUSION:

This is the setup I used to capture the 'CONSTANTINE BAY' black and white 16mm footage seen in this previous post.

I eventually got this working well enough to digitize small amounts of film. The registration of the resulting frames was pretty lousy, so I always had to apply stabilization to the captured images to make them usable. I've been using the After Effects warp stabilzer feature to do this.

I'm amazed to have got this far really. I'm very much learning about electronics, engineering and programming as I go along with this project.

I think the poor registration of this system is the area that needs to be looked-into next. My thinking is to try a machine vision camera instead of the bulky GH4 camera seen here. I'm curious to see if some of the functions of capturing and registration could be developed as software rather than hardware solutions. More about this to follow...

New Music Video: Tot Taylor 'Featurette'

Well it's been bloomin' ages since my last blogfession; over a year it seems! I've been pretty busy in the meantime, scrabbling around making a living and not always making things I can write much about.

However...

Here's a music video I just made for musician, gallerist and novelist Tot Taylor. The track 'Featurette' is a somewhat autobiographical number, in which Tot addresses his teenage self circa 1973.

When I first met Tot a few months ago, he told me a story from his teenage years. Like me, (as it happens) he grew-up in Cambridge. As an aspiring pop star, Tot bunked-off school one day with his teenage bandmates and took the train down to London. Armed only with a demo cassette and an AtoZ street map, Tot's band tracked down all of the record companies they could and proceeded to 'knock on doors'. After many rejections Tot's crew ended-up at the offices of Island Records where miraculously they found a sympathetic ear... Amazingly, Tot and his band of schoolmates recorded a session for the legendary Island Records label. But then and there, the dream kind of hit the buffers. Cut to the present day and Tot decided to revive his song 'Featurette' and rework it as a wry 'message to his naive but ambitous teenage self'.

For such a story of retro pop ambition, I decided to make a film in the style of a naive 1970s era teenage film-maker. The animation is rough and wobbly and the live action footage is mostly shot on 8mm and 16mm cine film. Not such a leap as it turned out ;).

The old DIY super8 film scanner project rides again !

Well I've been at home this last month and sorting through a lot of old things. High on a shelf in my studio I found a plastic box with my abandoned cine film digitizing project inside; so I dusted it off a bit and decided to see if I could get it running again.

Amazingly it DOES seem to be working!

I documented this project a bit back in the day. I stopped working on all this cine film stuff around 2014 when I had more pressing work/life commitments to attend to.

So not only have I now got it up and runnig again, but I've even made some small improvements! I've got the device working now with my newer Panasonic GH4 camera rather than the Canon 600D DSLR I was using before. I figure that the smaller micro 4/3 sensor is better for this application requiring less extreme macro magnification than the larger APSC sensor needed. Also the GH4 has an 'electronic shutter' mode which should be a lot more durable than the all-mechanical shutter on the Canon DSLR.

The electronic triggering circuit of my device needed a slight modification to trigger the shutter of the GH4. But I got it working after some web searching and a few hours of further tinkering.

So to show the world the current status of this project I've made this short video...

The Secret Nuclear Bunker: New Short (Cine) Film

Finally! I've put together my short film about The Secret Nuclear Bunker.

Followers of this blog will remember that I've made a couple of visits to this site to film with one of my 'old school' cine cameras. In this case the film was shot entirely on a Nizo 156XL Super 8; a fine German movie camera from the mid-1970s. Like most of my other recent Super 8 films, I shot with the Panasonic LA7200 Anamorphic lense adaptor to get a 16x9 format image.

As with my last couple of short films, this was shot on Black & White Argenti APX100 negative film, then developed at home in my home-made spiral processing tank. I shot three Super 8 cartridges to make this film, the first two were processed in traditional Ilford ID11 developer, the third roll in home-made Caffenol C-M developer.

The film was digitized frame by frame using my home-made film scanner. This device advances the film and captures each frame using a Canon 600D DSLR camera. The device is controlled by an Arduino card and some home-made circuitry. This capturing process is very slow, but works!

One great advantage of home-digitizing the film this way, is that I can capture a much larger image area than the single film frame, so I like to make use of this feature to present the film frames within the composited image that you see in the film. I sometimes like to leave in the sprocket holes and frame edges to get a 'fim within a film' feel.

I love shooting and processing real film like this. In my 'day job' I'm usually making films digitally, but I'm hoping that there might be a place for some of this analogue magic in some of my more commercial projects too.

Another DIY film scanner

For anybody interested in the film scanning/digitizing aspects of my Cable Car Super8 film, here's a little sneaky peek behind the scenes...

Yes, this really is my home-made 8mm film scanner project in all it's current glory.

There are two 20 tooth sprocket wheels which drive the film along (each one has a stepper motor underneath) and a third stepper to turn the take-up spool. All the stepper motors are running together under control of the Stepper Bee card. The machine vision camera you see is the Sumix 150M.

The light source is 10 rectangular white LEDS with a small piece of opal glass diffuser in front of them.

The 2 sprocket wheels, the 4 pulley wheels, and the film gate are all pieces I've designed in 123D Design and had 3D printed at Shapeways.com.

The camera sits on a Manfrotto plate and there are crude wooden guides for sliding the camera backwards and forward and sliding the main deck from side to side. I pack layers of card under the deck to achieve the correct height. So this is not exactly precision engineering...

Although I've been fooling around with this for quite a long time now, there's still a long way for this to go... Did I mention there is no automation of the scanning yet and that the camera only captures in monochrome? The registration is not great either, but I'm using the Stabilizer in After Effects and getting passable results that way.

I've ordered some more bits from Shapeways so no doubt I will soon be tearing this one apart and starting again...

My Most Exciting 5 Feet Of Film Ever

What could be more thrilling than seeing the daredevil stunt riders of the Ken Fox Wall of Death in action this weekend?

Well, supposing I captured some of the action with my Nizo super 8 camera using some black and white negative film. Then suppose that a mere 2 days later I wait 'til it's dark, sneak into my loft and put about 5 feet of the film loosely into one of my dad's old Paterson developing tanks. Then, maybe I head down to the kitchen and mix up 500ml of Caffenol C-M film developer (instant coffee, washing soda, vitamin C & water), process the film (15 minutes), water stop bath (5 washes), Hypofix (10 minutes), wash (10 minutes) then fast dry the film with a hair dryer.

Then just supposing there were actually some pictures on the film strip... How exciting would that be?

Well tonight, that's exactly what happened...

This is the first time in a very long time that I've processed any film of any kind. It's certainly the first time I've processed any cine film, and most definitely the first time I've processed film using a coffee-based film developer. (Co-op Fair Trade Instant if you're asking).

This first test film was just jumbled up willy-nilly inside the Paterson tank, but it certainly proves the chemistry works. Of course it would be better to use a proper cine processing tank, especially for developing a whole 50 foot (15 metre) cartridge in one session.

Once I had my 5 feet of  hand processed film, I then put it on my light box and took a few close-up stills with my DSLR camera and some macro rings. This is hardly the best way to get a telecine done, but at least this way, I can show some of the results.

DIY 'Caffenol C-M' processed BWneg super 8 film

DIY 'Caffenol C-M' processed BWneg super 8 film, inverted to positive and some levels applied.

It's very late now, but of course I couldn't resist putting a very short movie together out of these first few frames ...



I just couldn't be more encouraged by this first test. I hope I can digitize the whole 5 foot strip to show soon and I'm now very keen to process the rest of this reel with this chemistry. So much more to do with this...