I always walk away from you videos thinking "whyyy" masochist or genius I genuinely love your content! I hope this Channel makes it big in the analog community
I really, really love how you analyze the reason and manner in which it worked instead of just blindly going "it works when everybody said it wouldn't!"
I’m not sure why anyone doubted this. All red filters will leak various wavelengths, and if the ortho film has ANY sensitivity to red, it’s just a matter of exposing correctly for that transmission & spectral response. Have a look at the hubble colour filters…narrow band pass, remapped to RGB…looks passable as real since it’s nebula etc, but it’d be interesting to shoot narrow bandpass trichromes using wavelengths within the ortho spectrum and remap those to RGB in PS…I’d love to see how close to “real” you could make it look.
I wonder if you can "panchromati-sise" an orthochromatic BW film this way by exposing it normally at the correct exposure time, and then re-expose the same frame to the same scene, except through a red filter and for 10x as long to boost details in the red part of the image.
Perhaps it makes sense to make a positive out of the "red" negative. And apply the holotyping technique to it in order to reduce the density. Mixing the original negative and the resulting positive may provide additional information. Perhaps... !!! ?
What if you used an orange filter instead of red ? I might have worked better, although it's closer to yellow, ortho film should be sensitive to dark orange. (Ilford says that you can't expose Ortho 80+ under ORANGE safelights, they recommend a dark red instead, so it should be quite sensitive to orange still)
I've shot Ilford Ortho with an orange filter (a Nikon O56). IIRC it didn't require too much of an overexposure. When I trichromed it everything had a dirty sepia tone.
Is there such a thing as a filter that fluoresces or phosphoresces? So you could have a red filter, then a fluorescent filter behind that, and it would glow in a non-red color of light where it was hit by red light? This is how they take photos of xrays, the xrays hit a phosphorescent screen which then glows green and exposes the film. Alternatively if there is a film like version of such a substance, it could go behind the ortho film sandwiched between it and the backing paper in 120 hand rolled stock or in a large format film holder. Basically just glow in the dark sticker stuff, so the red light becomes green light indirectly, and contact exposes onto the green sensitive film, but with red channel information?
bit late, but another approach to this might be to do something similar to what component video does, where you get a full colour image with only two colour channels by comparing them to a third luminence channel
I don't think so, because the luminance channel here would be "no filter on the lens" and that still won't pick up red light. So it still won't distinguish between red and black. You'd have to swap out backs for a panchromatic film for the luminance frame, which defeats the purpose. I suppose it still uses 2/3 ortho film, at least
Are you asking how to mimic the blue/green look? If so you can just delete or black out the red channel in Photoshop and it should give you the same or similar look.
@@atticdarkroom No, I am asking if there is a way to fix the red channel (in PhotoShop) so when the full RGB channels are combined, the photo displays the relatively correct colours.
I still might not be getting your question, are you asking if there's a way to correct the red channel from the first attempt where it was underexposed? In that case probably not, the red channel doesn't have enough information to pull out in post.
@@atticdarkroom Perhaps you could just put an average of the blue and green channels in the red channel? Just so there's some red data there, even if it isn't "real"
Lol, final takeaway - "You can solve any problem by overexposing by 10 stops."
While I said that as a joke, it's a bit of advice that has come up handy a number of times surprisingly.
It kinda works in life also.
Or crank the volume up to 11… 😂
I always walk away from you videos thinking "whyyy" masochist or genius I genuinely love your content! I hope this Channel makes it big in the analog community
100% masochist
That's the wrong question. The correct one is "why not?"
This is the best new UA-cam channel I've discovered in the last 2 years. No joke. Keep up the good work.
Thanks! As long as I can shoot film and do weird stuff to it I'll continue making videos.
I really, really love how you analyze the reason and manner in which it worked instead of just blindly going "it works when everybody said it wouldn't!"
love your videos! glad to see someone going to the crazy lengths no other man has the guts to go
I appreciate it! I plan on doing any dumb idea that crosses my mind. Consequences be damned.
Should get the Ilford ortho film, put the red filter on it and expose each frame for like 10 minutes or more in broad daylight, see what happens.
I absolutely love your experiments. Such fun stuff I’d never come up with myself. Keep it up.
they images look super cool, i wanna give trichromatic photography a go!
Thanks. The trichrome process gives you interesting looking photos, if you get the opportunity to try it I highly recommend giving it a go.
Holy crap thank you for this video, I've been hyoerfixated on wondering what a red filter would do on ortho
You can use the red filter with the ilford ortho film, but leave the lens open for a few hours in the sun 😅
I love your channel so much, thank u so much for sharing all of this, including the thought process!
I’m not sure why anyone doubted this. All red filters will leak various wavelengths, and if the ortho film has ANY sensitivity to red, it’s just a matter of exposing correctly for that transmission & spectral response. Have a look at the hubble colour filters…narrow band pass, remapped to RGB…looks passable as real since it’s nebula etc, but it’d be interesting to shoot narrow bandpass trichromes using wavelengths within the ortho spectrum and remap those to RGB in PS…I’d love to see how close to “real” you could make it look.
I wonder if you can "panchromati-sise" an orthochromatic BW film this way by exposing it normally at the correct exposure time, and then re-expose the same frame to the same scene, except through a red filter and for 10x as long to boost details in the red part of the image.
i love your videos. thank you for making them :)
This video of simultaneously entirely useless and very interesting. I'm glad I found this channel
best channel ive found in a while! so good!
Perhaps it makes sense to make a positive out of the "red" negative. And apply the holotyping technique to it in order to reduce the density. Mixing the original negative and the resulting positive may provide additional information. Perhaps... !!! ?
I think with Ilford Ortho you could do a trichrome where you use the green as the Red channel.
Oh okay this was really interesting indeed I never would have know a red filter would have worked on some orthochromatic film very interesting
Unrelated to the ortho bit... but can you do trichrome by triple exposing one frame, each frame with the proper filter?
Yeah you can. I've tried it with C41 film and it worked. If you're interested in this topic look up "Harris shutter".
What if you used an orange filter instead of red ?
I might have worked better, although it's closer to yellow, ortho film should be sensitive to dark orange.
(Ilford says that you can't expose Ortho 80+ under ORANGE safelights, they recommend a dark red instead, so it should be quite sensitive to orange still)
I've shot Ilford Ortho with an orange filter (a Nikon O56). IIRC it didn't require too much of an overexposure.
When I trichromed it everything had a dirty sepia tone.
@@atticdarkroom
Oh, I thought it would be closer to red, but anyways...
Glad you tried it out at least !
To be fair I only tried with one frame. So take that with a grain of salt.
As a colourblind person, the ones without the red don't look all that weird to me. Don't trust me with colour. lol
Amazing content! subscribed!
Fantastic stuff!
You could get some interesting effects in longer exposures.
If I do something like this, I will embrace weird colours.
Is there such a thing as a filter that fluoresces or phosphoresces? So you could have a red filter, then a fluorescent filter behind that, and it would glow in a non-red color of light where it was hit by red light? This is how they take photos of xrays, the xrays hit a phosphorescent screen which then glows green and exposes the film. Alternatively if there is a film like version of such a substance, it could go behind the ortho film sandwiched between it and the backing paper in 120 hand rolled stock or in a large format film holder. Basically just glow in the dark sticker stuff, so the red light becomes green light indirectly, and contact exposes onto the green sensitive film, but with red channel information?
You buried the lede here - you've unlocked teal-scaling
bit late, but another approach to this might be to do something similar to what component video does, where you get a full colour image with only two colour channels by comparing them to a third luminence channel
I don't think so, because the luminance channel here would be "no filter on the lens" and that still won't pick up red light. So it still won't distinguish between red and black. You'd have to swap out backs for a panchromatic film for the luminance frame, which defeats the purpose. I suppose it still uses 2/3 ortho film, at least
Save time by keeping the lens cap on and overexposing by 1000 stops
Wouldn't the original 1860s trichrome experiments have been on ortho film since pan didn't yet exist?
I believe pan didn't exist, but red specific did and ortho did, IIRC
Photographers hate him!
Just wondering ... is there a way, by using Photoshop, to get the 10 stops overexposing effect on the washed out red channel?
Are you asking how to mimic the blue/green look? If so you can just delete or black out the red channel in Photoshop and it should give you the same or similar look.
@@atticdarkroom No, I am asking if there is a way to fix the red channel (in PhotoShop) so when the full RGB channels are combined, the photo displays the relatively correct colours.
I still might not be getting your question, are you asking if there's a way to correct the red channel from the first attempt where it was underexposed? In that case probably not, the red channel doesn't have enough information to pull out in post.
@@atticdarkroom Oh, I see, thanks. Good channel btw.
@@atticdarkroom Perhaps you could just put an average of the blue and green channels in the red channel? Just so there's some red data there, even if it isn't "real"
i once did this on accident, i felt like a fucking mistake lol
Please tell me you own a film shop or something cos these experiments must be pricy in terms of film
I work at a film lab so that definitely helps offset the cost.
@@atticdarkroom that's good 😂😂
you need to change title to "ILFORD EXPOSED FRAUD"
I wish i can over expose my life 10 stops and solve my problems.
😂😂😂
It's not perfectly ortho. Now try paper.
When I was 3 I pooed in a cup. I did that for absolutely no reason at all too
Would it work with a cyan, yellow and magenta scheme?