How to Film in the Ultraviolet

  • Ajoutée 18 sept. 2018
  • Filming in UV requires removing a filter, getting UV-transparent lenses and getting a good filter to block all other light.
    I got my hot mirror removed here:
    That is an affiliate link so by ordering through the link, LifePixel will give a commission back to me. If you don't want that, just use a different link.
    I've always been fascinated to film in the UV because it reveals to us a world that is always there but invisible to us. Most objects are not surprising but skin, dish detergent, flowers, tonic water, and optical filters are all very different in the UV part of the spectrum.
    The UV-pass filter I used was the Baader-U. The other filter was the ZWB1 that you'd have to use in conjunction with an infrared blocker. I have one around here somewhere but not sure exactly where.

Commentaires • 242

  • 970357ers
    970357ers Il y a 2 jours

    The lack of UV light does explain our eyes evolving 'visible' light sensitivity, seeing as there is most of it.

    TOONY BOX ANIMATIONS Il y a 19 jours

    Hello.plz wqtch my videos

  • naxyytt
    naxyytt Il y a 19 jours

    a filter that doesn't filter anything... interesting

  • Pete Jamerson
    Pete Jamerson Il y a 21 jour

    if that shit isnt cool to you then idk man

  • Level Headed
    Level Headed Il y a mois

    Hi - from the Flat Earth side - I subbed you - be nice :) - Curious about what you have here

  • deep strasz
    deep strasz Il y a 2 mois


  • AppNasty
    AppNasty Il y a 2 mois

    So....what would we see if 100% visible light reached us instead of 40ish?

  • Tibor Danilics
    Tibor Danilics Il y a 2 mois

    You can use your full spectrum camera with LED lights in studio as they does not emit infra, neither UV light

  • KeshDogga
    KeshDogga Il y a 2 mois

    Hey Derek! A great thing you can shoot with infrared is nebulae! Particularly emission nebulae. I know you need a telescope setup to do it but I'm sure there is plenty of amateur astronomy groups happy to lend a scope.

  • infamousjovian
    infamousjovian Il y a 2 mois

    This was super interesting, thank you for posting it

  • Dr Klaus Schmitt
    Dr Klaus Schmitt Il y a 2 mois

    Oh well, all that has long been published like on my site and others, so not really news, but anyway, good for collecting clicks I guess ;-)

  • Carsten Hahn
    Carsten Hahn Il y a 2 mois

    f 9.5 doesn't really create a shallow depth of field or?

  • Carsten Hahn
    Carsten Hahn Il y a 2 mois

    1:39 wow the camera can see Ultraviolet and UV light😂😂😂

  • Dingo Prod
    Dingo Prod Il y a 2 mois

    thank you for this :-)

    ACID SNOW Il y a 2 mois

    what a great video! i love it!
    thanks for sharing this great content with us!
    really enjoyed watching this

  • tasman_devil
    tasman_devil Il y a 2 mois

    I've learned MORE from this 6 min clip about UV light, than in school!
    Derek, don't you ever change, man! :-)

  • Ryley Meagher
    Ryley Meagher Il y a 2 mois

    Please be my friend

  • Jack Müller
    Jack Müller Il y a 2 mois

    cant wait for "the world in infrared"

  • Huskie
    Huskie Il y a 2 mois

    "the ultraviolet"

  • MrBlaq
    MrBlaq Il y a 2 mois


  • Ribavirin9
    Ribavirin9 Il y a 2 mois

    Jesus. Could this asshole take a bit of the mid-range out of his voice? I hated millennials already, but this pre-pubescent overloaded vocal fry is making me super angry-er.

  • Vink
    Vink Il y a 2 mois

    I've heard that some people who have had cataract surgery can see UV light afterwards, as the artificial lenses used do not block UV light whereas the natural lens in the eye does. Apparently our eyes are actually more sensitive to UV light than blue, we just don't see it because most of it is blocked by the lens. According to these people, UV blacklights appear bright blue after the surgery!

  • Samuel Maier
    Samuel Maier Il y a 2 mois

    That "10% is UV light" figure is the portion of photons in the UV spectrum compared to the rest of the Spektrum, or is it something else?
    Like compared to the UV+ VIS + IR spectrum, or some other measurement like the energy portion?

  • Edan Coll
    Edan Coll Il y a 2 mois +1

    This video makes it sound like digital camera sensor chips are sensitive to the whole EM spectrum. What is the detectable range?
    How is the image rendered in to an image made up of visible colors?

    • Tibor Danilics
      Tibor Danilics Il y a 2 mois

      Image sensors made of silicon are sensible on the near visible infrared to the UVA spectrum. Their peak sensitivity is in infrared. Most of the sunlight is infrared. Every camera has a greenish bandpass filter that blocks both infra and UV. The bayer RGB filter is pretty weak usually, and it is tuned to that filtered light. Removing that bandpass filter, screws up terribly the image. The only place where you can use a camera without bandpass filter is in a studio with very good LED or fluorescent lights.

    • Carsten Hahn
      Carsten Hahn Il y a 2 mois

      I think that it is not what he meant.
      He just wanted to say, that there is so much less UV like compared to other wavelength and that is why it was more difficult to film

  • Mateo Pets
    Mateo Pets Il y a 2 mois

    So basically, w/ the full lens camera, it can replace photo editing tools and scientific machinery?

  • thadude1337
    thadude1337 Il y a 2 mois

    So it would be easier if you went up a mountain then?

  • Amine Allam
    Amine Allam Il y a 2 mois +1

    Use the same technique as the light painting iso 100. 😋 bad english

  • wîrelessKÏller
    wîrelessKÏller Il y a 2 mois

    29k views FRclip

  • baraxify
    baraxify Il y a 2 mois

    Make that video please (the world in the infrared)

  • Eli Peter
    Eli Peter Il y a 2 mois

    Awesome! I've done some IR photography in the past, it's fascinating stuff

  • sogerc1
    sogerc1 Il y a 2 mois

    So then it's not really a filter in front of the sensor, is it? Just a protector sheet or something.

  • Tobi Zeller
    Tobi Zeller Il y a 2 mois

    Next time take a little trip to the ozone hole in your neighbourhood and film there for more UV light ;)

  • Jason
    Jason Il y a 2 mois

    Once you had camera data with UV images how did you shift it to make video?

  • sd4dfg2
    sd4dfg2 Il y a 2 mois

    I wish we had seen some other skin tones under UV.

  • Florian Lang
    Florian Lang Il y a 2 mois

    1:38 Ultraviolet, Infraret, UV

  • castortoutnu
    castortoutnu Il y a 2 mois +2

    Maybe some nightsky photography in full spectrum vs IR vs UV vs visible light ?
    (from a rather high altitude, you know why...)

  • Laura Halliday
    Laura Halliday Il y a 2 mois

    I've played with infrared photography, but never ultraviolet. The same optical issues you discuss.
    You used to be able to get colour IR slide film from Kodak which shifted everything down a notch with near infrared rendered as red. I thought of the results as "Barbie World", green plants rendered in red and blue (IR -> red, green -> blue), a fuchsia world.
    The dreamy black and white moonlit look is much more my speed...

  • Xistence Studios
    Xistence Studios Il y a 2 mois

    Now don't leave us on that this camera and other cheaper camera can capture infra red and there is no need of really expensive cameras for it

  • Binyamin Tsadik
    Binyamin Tsadik Il y a 2 mois

    You know that it's easy to record infra red and ultraviolet simultaneously and split them in the editing process after.
    Your color camera pixels should split it up for you.

  • sjeses
    sjeses Il y a 2 mois

    I love doing infrared photography. My old dslr doesn't have it's filter removed however, so I need multiple second exposures even in full daylight. This has an added esthetic benefit for me: it gives a soft ghostly feel to them because everything that moves gets smoothed or becomes ethereal

  • BariumCobaltNitrog3n
    BariumCobaltNitrog3n Il y a 2 mois

    Joe, meet Derek. Derek, meet Joe.

  • Darren DIY
    Darren DIY Il y a 2 mois

    Next, world in radio

  • Jagadish Talluri
    Jagadish Talluri Il y a 2 mois

    Nice feat..!!

  • Ashwin Goyal
    Ashwin Goyal Il y a 2 mois

    What about, full spectrum schlieren imagining??

  • Ricardo Becerra
    Ricardo Becerra Il y a 2 mois

    IR equipment so much easier!

  • Mythic IQ
    Mythic IQ Il y a 2 mois +2

    So you can use it to see radio waves, microwaves, and WiFi

  • AA Productions
    AA Productions Il y a 2 mois

    Very informative, and clear. Nice video!

  • kebman
    kebman Il y a 2 mois

    Next up: Film MONEY! $$$ €€€

  • kebman
    kebman Il y a 2 mois

    It's easy! Just use UV film! :D Wait? Are we in 2018? Oh... I'm a '78...

  • Wolferrat
    Wolferrat Il y a 2 mois

    If it works, I would love to see how a dog sees. (Not the myth of black and white.)

  • Carlos
    Carlos Il y a 2 mois

    Is it me or the girl in the video looks just like Physics Girl?

  • Nick Boone
    Nick Boone Il y a 2 mois +4

    The spectral response of the camera will also be having a massive effect on the amount of UV you can actually capture. Standard silicon CMOS sensors like those in digital cameras are tuned to be responsive to only visible light. You'll get very little light being picked up by the sensor outside of the visible wavelengths, I'm kind of surprised you can see that much.

    • Vink
      Vink Il y a 2 mois +2

      They must pick up enough of the light to warrant including a UV filter over the sensor, otherwise they wouldn't bother.

  • Blan Morrison
    Blan Morrison Il y a 2 mois

    Yes! Thank you!

  • Slikx666
    Slikx666 Il y a 2 mois

    Just the information I need. Webcam operation coming up.

  • Soknimith Chheng
    Soknimith Chheng Il y a 2 mois

    Can we film microwave?

  • Mattrikz
    Mattrikz Il y a 2 mois

    Go to a place where the ozon layer is really thin and try to record in UV

  • tychu9
    tychu9 Il y a 3 mois

    For UV filters: I’d that why classic movies look foggy when dealing with landscapes? Ie they don’t have the filter

  • Old Mitch
    Old Mitch Il y a 3 mois

    So if glass blocks UV, does that mean you are protected from UV exposure when you are behind glass? e.g ( in a car, behind a window) And does that mean you won't get sunburnt?

  • Oodain
    Oodain Il y a 3 mois

    i have a gopro we modified to take other lenses and we removed the uv/ir filter, some glass stovetop look really funky when filmed, even when we filmed visible + ir, it almost looks like cherenkov radiation but purple.

  • michael m
    michael m Il y a 3 mois

    Can you make a video walking through a city with the uv filter, it’s pretty interesting to see the world in a whole different color spectrum, having this camera you could see what the stress imperfections in glass. I’m wondering what a prince Rupert drop would look like.

  • Ricardo Alvarado
    Ricardo Alvarado Il y a 3 mois

    It would be quite interesting to know, how well car windshields block UV Light, and if there are any differences between car brands, makes and models. We would learn how important is to wear sunglasses when driving, where you are sometimes forced to look at the sun, sun reflections and sun-glare. While we’re at this, do car windows block uv well enough? Or should we be using sunblock on our arms?

  • Jan Neggers
    Jan Neggers Il y a 3 mois

    @Veritasium, did you also remove the bayer filter from the sensor?

  • kosi9611
    kosi9611 Il y a 3 mois

    Shoot someone welding in UV

  • Saquib Faisal
    Saquib Faisal Il y a 3 mois

    That's a lot of hard work...

  • David Kenny
    David Kenny Il y a 3 mois

    I would be interested in the infrared and uv emotions when looking into a kiln or furnace at 1300 celsius.

  • Sir scammalot
    Sir scammalot Il y a 3 mois

    I have an old ps3 where I removed the ir light filter and added a visible light filter so it only passes it light!

  • Mike Thorpe
    Mike Thorpe Il y a 3 mois

    Derek, you had a UV lamp. Did you shoot any thing lit with that?

  • VikingNidhogg
    VikingNidhogg Il y a 3 mois

    I hope so...

  • 3800Tech
    3800Tech Il y a 3 mois +4

    How does the CCD respond to UV? in particular how much so with the individual colour channels?

  • maglight117
    maglight117 Il y a 3 mois

    And soon a video titled: "The world through my multispectral eyes"

  • werdwerdus
    werdwerdus Il y a 3 mois

    but how does the camera convert the uv it receives into visible light images that we can actually see?

    • Gordon Freeman
      Gordon Freeman Il y a 3 mois

      The sensor just cares about photons, if UV photons is all that hits the sensor, then the camera will think it was visible light.

  • exod4
    exod4 Il y a 3 mois

    Please do the infrared video

  • Luiz Eduardo Carneiro
    Luiz Eduardo Carneiro Il y a 3 mois

    Never wonder how difficult would be to set up this video, now I do, what a challenge! Congratulations for the perseverance, focus and great work put on that video!

  • TheStackeddeck77
    TheStackeddeck77 Il y a 3 mois

    Here is the real question how do you keep an outside couch that clean let alone a white one.

  • qwaqwa1960
    qwaqwa1960 Il y a 3 mois

    You couldn't just kill the R channel to block IR? Or does it leak into the B too...?

    • Josh Lewis
      Josh Lewis Il y a 3 mois

      Depends on the chemistry of the camera's Bayer filter but generally IR leaks into blue as well. Leaks a lot into the red channel and a little into blue.

  • SilentProgram
    SilentProgram Il y a 3 mois

    So if you basically always have a low-light situation with the UV-only filter and have problems because of that: How good deals your camera with low light?
    I'm no camera expert by any means, but as far as I know, there are huge differences between cameras in terms of low-light capabilities.

  • Aidan Or
    Aidan Or Il y a 3 mois

    ooooh, i'd love to see gammavision!

  • Jo Reads
    Jo Reads Il y a 3 mois

    Hi Derek. Just wondering why you didn’t choose to use a quartz lens? Was it cost? It allows through more UVB as well, which would increase the amount of UV reaching your sensor (also more scattering of UV but there you are). I am curious because imaging UV is my research field. Great video thanks.

  • Nicholas Feeley
    Nicholas Feeley Il y a 3 mois

    I like the concept of the World in IR.
    But then try getting some other, narrower-band filters.
    Like, one that really only allows IR through at the general spectrum of what the human body gives off.

  • Vtron
    Vtron Il y a 3 mois +1

    One thing I don't understand is how higher frequencies of light, like UV, X-rays, and Gamma Rays scatter through air, yet the higher wavelength as make it through flesh. If anyone knows, please reply

    • Tibor Danilics
      Tibor Danilics Il y a 2 mois

      Glass is transparent to visible light but it is completely opaque to the lower infrared spectrum.I have played around with the thermal camera at work, and i can not see through the window with the camera. It has plastic lens, opaque on visible, transparent in infrared.

  • Lash
    Lash Il y a 3 mois +4

    The photoreceptors inside the camera need to actually detect the UV, and then convert it into visible light of some colour. How does that work?

    • Jason Osmond
      Jason Osmond Il y a 2 mois +4

      There's a filter in front of the sensor (typically a Bayer filter) that is a grid of tiny red, green, or blue filters, one color only above each photosite, that only permits light of that color to strike the photosite, which the camera hardware then interprets as a pixel of that color. Even though the UV filter has been removed and there's now a filter that permits only UV light to strike the sensor, the Bayer filter that remains will still pass UV light, and the camera will interpret photons that strike a particular photosite as that "color". There may be intrinsic differences between the pigments used for each of the RGB filters, however, which will bias which wavelengths of UV they can pass, and thus the resulting image isn't interpreted as neutral gray. There are sensors that have no Bayer filter (true multispectrum sensors), and thus would interpret a UV image as a monochrome gray image.

    • Theo Åhfeldt
      Theo Åhfeldt Il y a 3 mois +4

      Since these cameras take colored photos, they have to detect and store information on the wavelength/color of the light as well.

    • Gordon Freeman
      Gordon Freeman Il y a 3 mois +4

      The camera sensor just detects photons, if some of those happen to excite a pixel in the sensor, then you will have some signal from that pixel.

  • z beeblebrox
    z beeblebrox Il y a 3 mois

    Have you tried messing around with blacklights with the UV camera yet? I'm really curious how much brighter they'd look. In fact, it would be neat to see how other lights stack up too - halogen, fluorescent, LED, etc. Especially at what point along the spectrum a light goes totally dark in UV

  • kelan andersson
    kelan andersson Il y a 3 mois +4

    10% + 40% + 50% = 100%

    ...good to know.

    • kelan andersson
      kelan andersson Il y a 3 mois +2

      +Aspect Science I just accidentally clicked your channel... and I am so glad that I did. Very good quality vids :)

    • Aspect Science
      Aspect Science Il y a 3 mois +1


  • P3TZL
    P3TZL Il y a 3 mois

    nice. thank you.

  • jim blonde
    jim blonde Il y a 3 mois

    I thought it was because cameras are more sensitive to IR

  • Ruthvik Chandrasekaran
    Ruthvik Chandrasekaran Il y a 3 mois

    If UV is beyond the visible spectrum, how are we able to see it using UV filters? Does the filters emit light in the visible spectrum after it is exposed to UV light ?

  • mahchymk93
    mahchymk93 Il y a 3 mois

    What is a filter that doesn't block any light? They sold you no filter man, you got scammed

    • Luca Baldassi
      Luca Baldassi Il y a 3 mois

      I think it's just to protect the sensor from dust

  • jimbert50
    jimbert50 Il y a 3 mois

    Where is your video "The World in UV"?

  • Martin Galilée
    Martin Galilée Il y a 3 mois

    So if there's only that much UV around, do UV-seeing insects (bees) see the world that differently from us? Can we have "the world in bees eyes" with that full spectrum cam? Thanks, great vid as always!

  • Ivan
    Ivan Il y a 3 mois +1

    The filter is not for a "two inch telescope". That's not accurate. That sounds like the aperture of the scope is two inches. The two inches are of the focuser barrel of the telescope. I could have a "12 inch telescope" with a 2 inch barrel and that filter would fit.

  • Éric Senterre
    Éric Senterre Il y a 3 mois


  • Robert Cockroft
    Robert Cockroft Il y a 3 mois +13

    Would UV light be "brighter" or more abundant in Australia and New Zealand because of the hole in the ozone? Or would the difference be negligible?

    • thanks i hate it
      thanks i hate it Il y a 2 mois +1

      Diószegi Zoltán because it’s incredibly sunny and full of white people. In South Africa, very few people get skin cancer because the dark-skinned population is proportionately large, and they are much, much less likely to contract skin cancer from UV exposure.

    • Diószegi Zoltán
      Diószegi Zoltán Il y a 2 mois

      But then why is skin cancer much more common in Australia and New Zealand?

    • Vink
      Vink Il y a 2 mois

      The ozone hole is only above Antarctica, and aside from the hole, global ozone depletion is roughly uniform across the globe. Apparently in 2008 a study revealed that depletion around the equator reached the point that it was endangering populations living in equatorial zones. So looks like those are the places to go for brighter UV photos.

  • Billy Hansen
    Billy Hansen Il y a 3 mois

    So if a normal camera can see ultraviliet light, does that mean we could too?
    So if we were in a very dark room, could our own eyes see through the filter if it was the only window to the outside?

    • Josh Lewis
      Josh Lewis Il y a 3 mois

      If you go outside and look through a piece of wood glass (something like the z filter that let IR and UV through). Block/shield out all other light. Your eye will adjust to the darkness behind the wood glass and you will see a world with bright red vegetation, insanely purple sky, a few spots of hard purple light where direct sunlight hit. This is has got to be part of visible light - your seeing it with your own eye. It is just the extreme edge of visible light near IR and UV. Looks like the full spectrum picture but way more extreme.

  • Mr. Rootes
    Mr. Rootes Il y a 3 mois

    Film a microwave in microwave spectrum

  • stereomike111
    stereomike111 Il y a 3 mois

    not another kurt wimmer movie

  • cristianfcao
    cristianfcao Il y a 3 mois

    Here's an obvious idea for a video: How do camera filters work?!

  • Leszek Laskowski
    Leszek Laskowski Il y a 3 mois +2

    Great explanation!

    • Leszek Laskowski
      Leszek Laskowski Il y a 3 mois


    • Aspect Science
      Aspect Science Il y a 3 mois +1

      Derek has become such a great communicator of ideas/concepts! Are you a massive Veritasium fan?

  • Falcrist
    Falcrist Il y a 3 mois

    FYI fstop is often unreliable when talking about smaller format cameras since manufacutrers are using the 35mm equivalent value rather than adjusting it to the smaller size.
    This results in the f number representing (roughly) light per unit area of the sensor rather than total light collected.
    Basically f 0.95 might not actually collect the same light as an f 0.95 lens for a 35mm camera.

    • Falcrist
      Falcrist Il y a 2 mois

      +0ooTheMAXXoo0 fstop is usually a pretty accurate representation of how much light is getting in. You can use t stops if you want to be more precise, but that's beside the point.
      I'm saying that crop factor is not being applied to the aperture of the smaller format lenses. At f0.95, he's getting the same light per area as an f0.95 lens on a full frame sensor, but only half the total light since his crop factor is 2.

    • 0ooTheMAXXoo0
      0ooTheMAXXoo0 Il y a 2 mois

      T-stop gives you the actual amount of light that gets through. F-stop number comes from the size of the aperture compared to its distance form the sensor and the length of the lens. F-stop does not accurately represent the amount of light that gets through since it does not take into account how well the glass in the lens transmits light. Really F-stop gives you different depths of field. With a macro lens, the closer you get, the dimmer the lens gets for example. An F2.8 lens could be T4 fairly close up and T8 really up close... Still always giving you the depth of field of F2.8...

  • Utkarsh Jain
    Utkarsh Jain Il y a 3 mois

    Make world in infrared

  • Ynook Seishin
    Ynook Seishin Il y a 3 mois +6

    I hope I am not thinking about this in a wrong way, but the colors in the UV light film are still perceived through the visible light spectrum by the observer. I mean, there will still be nuances of grey and other colors. We still don't know what the 'color' UV light looks like. Am I wrong?

    • xponen_
      xponen_ Il y a 2 mois

      We have to ask birds how the 4th colour looks like, unfortunately all bird couldn't communicate in language.

    • Ynook Seishin
      Ynook Seishin Il y a 3 mois +1

      I am familiar with the idea of explaining a color to a blind person. Red is just red. I understand what you are trying to say and I think you are right. It doesn't matter how our eyes see UV light, it matters what our brains do with that information.

    • kindlin
      kindlin Il y a 3 mois +4

      There's nothing to really imagine... It's like trying to see in 4th dimensions, it just doesn't work that way for us. If we had an additional cone, our brains would get additional information. However our brain felt like interpreting that type of cone's activation is how we would perceive UV or any other non-trinary color.
      Try this: explain color to a born-blind person. Now, try this: come up with a 4th color. It's basically the same exercise.

    • Ynook Seishin
      Ynook Seishin Il y a 3 mois +2

      That is what intrigues me. I can't imagine another color besides the ones in the visible spectrum. I know how the cones in our retina make us perceive color, but still, UV or infrared colors are hard to imagine without the colors we already know.

    • David M. Johnston
      David M. Johnston Il y a 3 mois +4

      On the other hand, if we did have cones for UV light, it would be a whole new added color, different from what you get when you experience red, green, blue, or any other color you can think of.