Hi gang! I’ve not uploaded for a while because I’m writing a book (turns out writing a book takes ages!) but if you like this please do subscribe and I promise to make some more science videos ASAP. Some may even be as good as Steve’s… :)
@NoName-fp2nd4 жыл бұрын
Subscribed.
@someone-fk7bi4 жыл бұрын
And one more
@DZHOY4 жыл бұрын
and another
@phyphor4 жыл бұрын
And my axe!
@R2D2internet4 жыл бұрын
2:26 It's true that IR travels slightly deeper into skin, look at the veins on the arms!
@DrAndrewSteele4 жыл бұрын
If you want to see some seriously veiny arms… instagram.com/p/BzBtp0BB9wn/
@oscarfeatherstone66886 жыл бұрын
That bit when the tube pulls into the station was awesome.
@DrAndrewSteele6 жыл бұрын
Oscar Featherstone I didnʼt expect it to be so amazing underground, but it really was!
@oscarfeatherstone66886 жыл бұрын
So was this shot with a dedicated IR camera, or did you remove the IR filter from a modified DSLR?
@DrAndrewSteele6 жыл бұрын
It was a DSLR with the filter replaced with fused silica, which passes IR, visible and UV…and then an IR filter on the front of the lens to block the other two. Visible footage was with an unmodified one. :)
@oscarfeatherstone66886 жыл бұрын
It looks fantastic. I'd love to give it a try some time.
@MetroAndroid2 жыл бұрын
I feel like it's important to mention that infrared wouldn't necessarily "look white," and the white vs dark is just a way of visualizing the contrast between high and low infrared in a way that humans can actually observe. So trees wouldn't look like winter in infrared but probably more like a bright bloody redder than red color that doesn't exist in visible light.
@eduardog3000 Жыл бұрын
"but probably more like a bright bloody redder than red color that doesn't exist in visible light" And that's only if we were seeing in *only* infrared. I'd imagine if we just extended our visible range into infrared, we'd still be seeing more green than infrared coming off the trees.
@Shonade_Malik Жыл бұрын
@@eduardog3000 Since your visible range is extended, your brain forces to make a new color. It could be an entirely new color, or just a deep red. And yes, probably we'd be seeing green, but in other places where there's lots of infrared emission, they would look like an unusual red.
@DrAndrewSteele Жыл бұрын
True, it probably wouldn’t look white-but what colour exactly it would appear is hard to say. Wavelengths of light are a physical phenomenon but colours are all in the mind!
@DrAndrewSteele Жыл бұрын
@@eduardog3000 Actually, plants usually reflect a lot more IR than green! www.researchgate.net/figure/Characteristic-plant-reflectance-spectrum-with-absorption-features-of-example-compounds_fig1_326110050
@joeysipos Жыл бұрын
It’s hard to say what near infrared light looks like because it’s below the Red wave length… so it ain’t red anymore lol. Who knows what it really looks like…
@Scudmaster112 жыл бұрын
Alot of infrared videos are only thermal infrared not infrared light... this is the type of videos they should be
@MedlifeCrisis5 жыл бұрын
And to think I ended up here due to a tweet about toxic megacolon
@davidamadore6 жыл бұрын
Now do exactly the same in the (near) ultraviolet, please!
@DrAndrewSteele6 жыл бұрын
It’s on the to-do list :)
@davidamadore6 жыл бұрын
Great! One even wilder idea (but I don't know how easy it would be to find the hardware) would be to film simultaneously in near-IR, visible and near-UV, and render this as red, green and blue channels to form a kind of "extended visible" false image color. I'm particularly interested in what the skin color of various ethnic types would look like in this model. (Of course, the difficulty would be to decide how to relatively calibrate the three channels. Perhaps use a blackbody spectrum at 6500K as reference "white".) Also, the slightly further infrared (shortwave IR, around 1.5µm) seems interesting as well. In contrast to near IR, human skin is apparently always dark in that region.
@DrAndrewSteele6 жыл бұрын
Ha, yes, it would be technically challenging! You’d need a beamsplitter if you wanted to overlay them…we used two side-by-side cameras but parallax means that they don’t quite line up. I have played around with this a bit in the past, but only in still photos where you can take several shots and overlay them later… See 500px.com/andrewsteele/galleries/multispectral for a few examples! I’d love a 1.5µm SWIR camera…sadly slightly out of our budget for the moment!
@davidamadore6 жыл бұрын
Great multispectral images! Even if it's just stills, it's fascinating. I'd love it if you could take one of a group of people with various skin tones so we could compare the ordinary visible (red+green+blue) image and the composed IR+green+UV image. (Of course, if you have to get everyone to stay perfectly still, I can imagine how challenging that would be.)
@Redpy56 жыл бұрын
Veritasium recently released a UV video at kzbin.info/www/bejne/jGquZ5qgh5VqhtE . I was actually brought here by +Lab, Camera, Action! comment on said video. Was really glad to see it, as I was obsessed with IR photography as a teen and even made some diy IR goggles thanks to the user KipKay here on KZbin (kzbin.info/www/bejne/fmOQn4NordFskMk).
@ElectricalSwift4 жыл бұрын
This is an amazingly well made video! Awesome stuff :)
@DrAndrewSteele4 жыл бұрын
Thanks!
@7019838 ай бұрын
I'd love to see a whole movie filmed in near infrared! No fake colors, just black-and-white!
@realemperorkuzco6 ай бұрын
Dune part 2?
@eye4invisible7874 жыл бұрын
Love the transitions in this video, especially the one beginning at 0:16 as you pan past the tree! :) Which IR filter did you shoot this with? 720nm? Also, how did you rig up the 2 cameras side-by-side?
@DrAndrewSteele4 жыл бұрын
Thank you! Yes, it’s a 720 nm IR filter: Hoya R72. The cameras were on a cheap dual camera mount like this: amzn.to/2Xq39hM It was a bit rickety but it did the job!
@durgeshpradhan64504 жыл бұрын
Amazing video! It really took me into a new world! Thanks @Andrew and team
@Askjerry4 жыл бұрын
Very entertaining video. Hard to believe your channel is sub 1K subscribers... with videos like this that will change quickly! Subscribed.
@brianhale34486 жыл бұрын
Only thing to make it better would be to show the helicopter footage on a hazy day in visible light vs infrared. As an infrared photographer I know how well IR cuts thru but it wasn't shown here, only mentioned.
@DrAndrewSteele6 жыл бұрын
Ha! That would have been ideal… Unfortunately that footage was actually taken handheld through the window of a commercial flight, and I think my arms would have expired if I’d had to support both cameras for the duration. :)
@brianhale34486 жыл бұрын
It's still fantastic and a lot easier to send someone your video than explain "it's not snow" every time without sounding annoyed haha.
@DrAndrewSteele6 жыл бұрын
Haha! Glad to have provided a (niche) public service!
@eye4invisible7874 жыл бұрын
@@DrAndrewSteele You need a full spectrum converted drone :)
@DrAndrewSteele4 жыл бұрын
@@eye4invisible787 Haha, yes please!
@8randomprettysecret8 Жыл бұрын
Feels like an otherworldly dream. Outstanding 😮
@Makatea2 жыл бұрын
There are also certain garments, made of synthetic fiber, which are IR-transparent. Might make a good followup-video with the potential to go viral, depending on how you aproach it ;-)
@LeylaKazim6 жыл бұрын
good work dude - loved it! 👏😊
@peterlightowler2 ай бұрын
Do you know if there is a particular IR wavelength, such as 590nm that can see through tinted windows?
@j.m91775 жыл бұрын
heard you on talk radio with katherine boyle last night (8-9/2/19). sounded too intriguing not to have a gander. glad i did. cheers.
@PPYTAO4 жыл бұрын
Amazing video 👌
@anttiv7109 Жыл бұрын
Why is this black & white even though I see IR photos often being different shades of red?
@DrAndrewSteele Жыл бұрын
Those reddish ones are probably unprocessed! Of the RGB sensors in cameras, the red is by far the most sensitive to infrared, so pictures look red unless you alter them in post. In this case I enhanced the IR effect a bit by mainly using the G and B channels, which are only sensitive to longer IR wavelengths!
@itsanumolu6 жыл бұрын
What camera are you guys using to record in infrared?
@DrAndrewSteele6 жыл бұрын
It's a converted DSLR with the IR blocking filter removed and replaced with some fused silica, which lets through everything from UV to IR. Then we used an external IR filter to block visible and UV. :)
@RD55004 жыл бұрын
@@DrAndrewSteele How do you transition from colour to ir so seamlessly?
@DrAndrewSteele4 жыл бұрын
@@RD5500 Those scenes were filmed with two cameras side by side, one visible, one IR!
@RD55004 жыл бұрын
@@DrAndrewSteele Oh, i see. Its really well put together that i didnt quite notice the slight difference of perspective. I thought you used some special filter or something. Nice vid, man. Also you're really quick to reply lol...
@DrAndrewSteele4 жыл бұрын
@@RD5500 That glitch transition covers a lot. ;) And thanks dude!
@majortom4543 Жыл бұрын
I want one of those cameras. The footage looks cool
@MemesnShet4 жыл бұрын
Looks like a weird dream scene from an old movie where everyone wears white polos lol
@claridadespontanea11953 жыл бұрын
Wonderful!
@kjy056 ай бұрын
Interesting❤
@Axgawd4 ай бұрын
Brilliant
@Mysoi1236 ай бұрын
I love visible light!
@brotherandy4 жыл бұрын
What would things look like in just red, or just blue, etc?
@DrAndrewSteele4 жыл бұрын
You can actually try this yourself with photo editing software. A colour photo is made of red, green and blue channels, so you can separate them out and see!
@kallelnavarre65077 ай бұрын
I love inferred so cool 😎
@sandwich24735 ай бұрын
You could get some really interesting and moody shots if you colour burned a full spectrum video of the underground onto the infrared video and did some colour correction
@DrAndrewSteele5 ай бұрын
Haha that would be cool! I’ve done it a few times before for landscapes, which makes for some very strange colours (very light green trees, and the whole background goes blue because the blue light is scattered but still pretty detailed because the IR cuts through the haze…)
@ib03y72 ай бұрын
is this an infrared camera or infrared filter? if so which filter please!
@pathduck6 жыл бұрын
Very cool. Wondering about the sunglasses - some are completely clear, I assume those are polarized while the ones that are still dark will be non-polarized?
@DrAndrewSteele6 жыл бұрын
Great question, and I’m not totally sure of the answer! It’s probably just ‘different dyes have different responses to the infrared’, which is a bit vague. :) I don’t think it’s likely to be polarisation though-most polarising filters don’t affect IR! In fact, it’s a common trick if you don’t have an IR filter to use two crossed polarisers instead, which will block all the visible light, but let the IR pass through unaffected. If anyone has any ideas do let us know!
@pathduck6 жыл бұрын
Yeah, I just thought it was the cheap ones that were totally transparent. Did some searching, appears some sunglasses block IR light (partially or fully) - but not so sure about the actual benefit, since IR is not as damaging to the retina like UV light is. diglloyd.com/articles/Recommended/sunglasses.html Looks serious enough, even if obv. pushing a brand of glasses.
@DrAndrewSteele6 жыл бұрын
Cool, that’s really interesting! Might partly be a glass/plastic thing. And agreed it’s less damaging than UV, but now I’m wondering what the effects are…
@adityaabdilahyusuf61974 жыл бұрын
Awesome video
@aarijzafeer4 жыл бұрын
Are there infrared cameras available on sale
@DrAndrewSteele4 жыл бұрын
Yes, you can buy modified cameras or have an existing camera modified for IR. The cheapest way might just be to buy an IR filter like a Hoya R72 amzn.to/2sZDujf and try it on an existing camera you have though…a lot of cameras leak a bit of IR and you can take pictures in the infrared without modifying. :)
@prevarikator5 ай бұрын
Dune 2024 brought me here!
@DrAndrewSteele5 ай бұрын
Great to see infrared hitting the mainstream!
@KevinKurzsartdisplay Жыл бұрын
I would be curious to know what things look in mid and far infrared light.
@DrAndrewSteele Жыл бұрын
Me too! One day…mid- and far-infrared cameras are EXPENSIVE (but definitely on the to-make-a-video list!).
@olmocuaron Жыл бұрын
Being a londoner, colorless infrared London looks more colorful than actual London
@MrVasher Жыл бұрын
The thermal range is wider for perception than the color one! In the thermal range, we could see through things, better than X-rays! Superman actually had thermal vision, not x-ray vision!
@InfraredVisuals4 жыл бұрын
Interesting.
@joeysipos Жыл бұрын
This is confusing because what we are looking at here is not Infrared but Near Infrared… Infrared would be looking at heat signature below the visible light spectrum…
@7019839 ай бұрын
Near infrared doesn't mean "visible light nearby infrared" (which would be red light), but "invisible infrared radiation near the visible spectrum", wavelenghts of ~1 µm. "Low" temperature (e.g. 20°C) heat radiation (thermal imaging) is mid-wavelength IR, about 10 µm.
@Cyruscosmo4 жыл бұрын
Steve Mould sent me ;-)
@doctorpex68624 жыл бұрын
2:45 that is how Jesus turns water into wine
@treyusher32 Жыл бұрын
The way at 2:26 you can see that guy's veins through his arm is insane
@amantin4 жыл бұрын
Woe..!!!!
@MrJoshameeGibbsVideo3 жыл бұрын
What camera did you use?
@DrAndrewSteele3 жыл бұрын
It was filmed with a Nikon D5200, converted to full-spectrum :)
@Addsomehappy4 жыл бұрын
Spooky.
@AgnideepSarkar904 жыл бұрын
which IR camera did you use?
@DrAndrewSteele4 жыл бұрын
It’s a Nikon D5200 which I got converted to full-spectrum!
@nekrosis44314 жыл бұрын
Why does this have
@skarrambo14 жыл бұрын
Thanks to Steve Mould for bringing me here -l as a Physicist and enthusiast Photographer, this video was wonderful! Just a slight caveat, though I'm sure some Physicists wouldn't take issue with it, I think it's more accurate to say blue light is scattered *more* in the atmosphere than red or green, as opposed to *better*
@Veptis4 жыл бұрын
I prefer long wave infrared. I own a few cameras for it, but the cameras aren't of such a great image qaulity
@DrAndrewSteele4 жыл бұрын
I am definitely jealously eyeing LWIR cameras… When I get back to making videos that’s definitely something on my list! Enjoyed your making toast vid!
@Veptis4 жыл бұрын
@@DrAndrewSteele it took me a long time to get where I am starting to be now on the hardware end. Getting old cores is the cheapest way in and the nice lenses you get is beneficial. Join the EEVblog subforum on thermal imaging if you have any specific questions. The two public videos I uploaded were shot on a QVGA+ core and I am currently trying to swap the lens onto a VGA core for better resolution. I have to see how to manage that, but I might not get to it for a few weeks. There might also be a new video soon that highlights people.
@DrAndrewSteele4 жыл бұрын
@@Veptis Cool, looking forward to it! And I was nerding out lurking on the EEVblog forums a few months ago when I went through a phase reading about this. :)
@rogerrabbit74692 жыл бұрын
How are these images different from thermal infrared?
@DrAndrewSteele2 жыл бұрын
They're a very different wavelength! These images are around 800 nm, which is pretty close to the 400-700 nm of visible light. Thermal infrared is more like 8000+ nm.
@rogerrabbit7469 Жыл бұрын
@@DrAndrewSteele ok thanks for replying..but just out of curiosity would you be able to see the light beam of a ceramic infrared heating light in total darkness using the camera?
@anttoes325 ай бұрын
Why are most of the clothes white?
@DrAndrewSteele5 ай бұрын
Great question, and I’m not 100% sure but I think it’s because most undyed fabrics are white (because structures in the fabric are on the same scale as light wavelengths so they scatter them-see Steve Mould’s great video on why white things are white! kzbin.info/www/bejne/nabKZ2qcZsRroK8 ), and most dyes aren’t designed to have any effect in IR, so you’re left with high levels of reflection/scattering…
@chuckygobyebye4 жыл бұрын
If you like that, check out Red Eye Reeves.
@zachsurp Жыл бұрын
wayyyyyy too dramatic with that music and VO but i did like the portraits
@doxxius35364 жыл бұрын
Once again we can thank Susan Wojcicki for generously NOT promoting interesting channels on KZbin. KZbin just keep going like that, you're only seven years late….
@kxriso3 ай бұрын
Geidi Prime:
@PenisGabber4 жыл бұрын
What's the camera used?
@DrAndrewSteele4 жыл бұрын
It’s a Nikon D5200 which has been converted to full-spectrum by removing the internal IR blocking filter and replacing it with a piece of fused silica.
@PenisGabber4 жыл бұрын
@@DrAndrewSteele Thank you!
@patsonzgambo96723 ай бұрын
geidi prime
@mipe77556 жыл бұрын
Please tell me where you shot 3:23
@DrAndrewSteele6 жыл бұрын
That’s down by the Serpentine in Hyde Park. :)
@mipe77556 жыл бұрын
Thank you, I love the roof of that building :D And your footage too ;)
@DrAndrewSteele6 жыл бұрын
Haha thanks :)
@pierrecrampagne68262 ай бұрын
Original les vues de Londres, l'infrarouge va mieux aux végétaux, qu'a ds sujets humains, maintenant essayez la couleur ( cageot de citrons, d'oranges, et faites des portraits, des objets en cuivre etc) vous allez être surpris par la couleur des photos.Si dans les couches normales vous avez bleu, vert, rouge, pour l'infrarouge vous avez vert, rouge, et infrarouge. Dans le métro, j'aurais ajouté un flash avec une gélatine rouge foncé et faire des photos avec le flash que personne ne verra, y compris sur des a u t o s k o u t e r le soir ou la nuit tombée en noir et blanc.
@wizzard211 Жыл бұрын
Common man! I hate this type of misinformation and confusion. Dude! you have no idea what color it will be when looking in infrared, because you can't imagine a new color. For that exact purpose it was intentionally rendered in white or black (or whatever color we can perceive), which he didn't say , he delivered the informations as IF infrared is white per se. From our point of view when we look through infrared we "see" additional context previously unseen and in order to visualize it clearer we color it, but that's not the color it will be. In fact for every creature in will be a different color because of the way the eyes are constructed.
@RoodeMenon2 жыл бұрын
In infrared there is no race.
@iComplainer6 жыл бұрын
Do you want *subscribers??* Because this is *how you get* subscribers.
@jeremy-ws1rb3 жыл бұрын
Ultraviolet makes people look dark and purple while infrared makes them look white as hell
@DrAndrewSteele3 жыл бұрын
It's amazing the difference 400 nanometres can make, isn't it?