Ideas for Reverse of Kinograph? Digital to Analog


#1

Hi Everyone.
I stumbled upon this community with much interest.
What a great endeavor. Much respect!

I’m, perhaps rather strangely, looking to make almost the mirror image of this project and would very much welcome any advice.

I wish to archive a large amount of digital still images to film stock for future safe keeping as economically as possible.
My initial ideal was 35mm slide film, but it’s very cost prohibitive.
So, I’m now kicking around the pro’s and con’s of each analog format for quality and speed.
If there was a way to semi-automate projection/exposures per frame or 2 to super 8/16mm ?
Etc. Etc…
Vs. 35mm negative stock?

As you can imagine, almost all google results come back as how to digitize film instead of reverse.

This seems a good community to pose such a question.
Both ideas and criticisms/warnings are very welcome!

Best,
Gavin


#2

I’d be curious to know what advantages you’d get from archiving digital images on film, but nonetheless such a DIY project could be very interesting. (I’ve thought about doing such a project myself too, just as an experiment.)

If you wanted to go a semi-easy route, you could perhaps grab a digital projector, then change its optics to make the projected image smaller and closer to the lens, and then build some rig to place your unexposed film where the projected image is focused. Then you could write some software to turn the film a certain length at a time and flash an image onto the film by outputting the desired image into the projector and then immediately outputting a black image (to stop the exposure).

The real limitation of using this method, though, comes in the projector itself. If you wanted to effectively archive images onto film using a digital projector, you’d need to have a projector that’s as high resolution as the images you’re archiving. It might be easy with SD/HD images, but if you need to archive DSLR images effectively then you’d likely need a 5K/6K projector (I don’t even know if you can get projectors of such resolutions; 4K projectors are the largest I’ve found, and they can be quite expensive).

With respect to dynamic range, you could have the projector flash brighter parts of the image for longer amounts of time and darker parts of the image for shorter amounts of time. This is analogous to, in a Kinograph, taking pictures of the same image at different brightness levels.


#3

Thanks a lot for the reply ImgKD,

You’ve brought up some very interesting points.
All of which are very important questions to consider.

To give you some background of the ‘why’ and perhaps touch on some of the other points as best I can along the way…

Bear with me a minute!
My main job is as a film/video editor for the past 15 years + , almost all of my work is in documentary film.
-Around 2005-2008 - ish, Lots of documentary’s were being shot on DV or Mini DV tape, It was a revolution for doc film makers, Just keep shooting.100’s of hours of footage cheaply and fix it in the edit. …
-Mini dv frame is 720 x 576
-Most of what was shot in that era looks totally shit now via our 4k trained eyeballs.

  • and yet, I edited several films with that footage that went into cinema’s, because they went through telecine process, which was basically, as you said, projecting very well and capturing in good old analog format.
    -And they live on now to be remastered to current standard every couple of years.

My point being - I can compare the experiences of those projects with less ‘complete’ projects of both film and still images captured around that time…
Home vids/Never finished film projects… etc…
-Mostly, those hard drives have crashed long ago/formats are unsupported by modern programs/ codecs missing/ corrupt data/ etc.

Basically, I think there’s a lot of value left in archiving your most precious (selective!) memories from digital to film, and I’m not convinced that the 6k projector etc. is the most vital part…
Presumably the scanning tech will make up for that in the future!

A decent analogue negative has a lot of potential for future generations to explore in my mind.

Tell me if/where I’m wrong though!

Cheers,
Gavin


#4

Ah, that makes more sense.

As far as using such a project for archival means, have you first looked into other forms of media storage (such as optical media or tape drives)? You could also look into storing the same data in multiple hard drives (as e.g. a RAID setup), so that when one hard drive fails you can swap it out for a new drive and you won’t have lost any data.

As far as codecs, yeah that’s slightly more challenging. I would store software in the archive itself that can decode those videos into RAW format or store the videos as RAW altogether (considering the relatively small size of the videos). That way if you need to grab the videos in any format, you could run the video decoding software in the archival system to RAW and then encode the RAW with your modern video format of choice.

Back to the project itself, now that I know what kind of media you’re working with you won’t need a 6K projector. Just an off-the-shelf business HD projector would be plenty, maybe even a touch overkill.


#5

Thanks again ImgKD,

Yes, I am aware of all of the other backup options, many of which I’ve used and have seen fail over enough time because of changes in formats/computer connections (Firewire 400 even requires some workaround already!)

Ideally, I want something that can be found in an attic somewhere years from now and still be easy to understand and of legitimate use to future generations.

I like the idea of something that forces us to pick our most precious memories for preservation too.

Honestly, I’m pretty confused about what exactly the current iCloud generations plans are long term really.
Are we going to include our iCloud password in our wills and expect future generations to wade through 10’s of thousands of our photos?

I’d like to imagine that we can leave something a bit more selective and more precious behind.

Cost is always a factor when it comes to analog vs digital options, and it is cost prohibitive right now, but maybe there’s a middle ground somewhere to make transfers automated a bit and cheaper, while also keeping it special.


#6

Also, I should include.
The main goal isn’t to archive pro work-but to keep personal memories for myself and others.