Night Vision 101: Focus, Diopter, Aperture

Поділитися
Вставка
  • Опубліковано 17 гру 2024

КОМЕНТАРІ • 96

  • @CthonicSoulChicken
    @CthonicSoulChicken 3 роки тому +171

    My favorite lesbian aunt does not disappoint with content.

  • @Kuriyama_Mirai
    @Kuriyama_Mirai 3 роки тому +79

    thank you for making accessible and dummy friendly night vision videos once again, hoppu-kun

    • @Hoplopfheil
      @Hoplopfheil  3 роки тому +59

      This is the job my liberal arts degree prepared me for.

    • @jasoncown
      @jasoncown 3 роки тому +6

      @@Hoplopfheil weebposting?

  • @BrassFacts
    @BrassFacts 3 роки тому +25

    dang... I knew what the pin hole cover was for. But having a second one with a larger hole, that's pretty slick. You're making my WIP nvg guide more obsolete by the day.

    • @jabr991
      @jabr991 3 роки тому +3

      Btw, UA-cam unsubscribed me. That was reconciled immediately 👍
      Looking forward to seeing your channel grow dude 🤙

  • @bryanscle5431
    @bryanscle5431 3 роки тому +21

    Man never knew that about the pin hole cap, that'd have been nice back in the day

  • @ZeeCaptainRon
    @ZeeCaptainRon Рік тому +3

    If I don't have reading glasses handy, I make a tiny opening with my fingers and look through it and viola, focus happens. Strangely enough, I never thought about how that would work on the PVS14 front cap. Learn something new every day, thanks Hopmeister.

  • @Jkp1321
    @Jkp1321 3 роки тому +13

    The demo at 3:24 was useful for me because I have astigmatism and that causes red dots to be blurry almost no matter what, unless I put my rear sight up, and then the light focuses into a clean dot but, obviously that ruins the purpose of a red dot

    • @PigPharmaceuticals
      @PigPharmaceuticals 3 роки тому +4

      I don’t think it makes it 100% useless. If it’s faster target acquisition than just using irons alone, it might help to use the red dot almost like a more visible front sight.
      Idk if you already knew this but a lot of people say prism optics are good for astigmatism. Hope you find/found something that works well for you!

    • @Jkp1321
      @Jkp1321 3 роки тому

      @@PigPharmaceuticals I have heard that, but I think I'll just deal with it until I can afford Lasik which would make everything better in general

  • @DullPoints
    @DullPoints 3 роки тому +14

    Hey man, thanks for this. Night vision has always confused me and this helps me know at least the right words to look up.

  • @PigPharmaceuticals
    @PigPharmaceuticals 3 роки тому +73

    Fun fact: If you’re someone who needs prescription glasses, you can actually observe the pinhole phenomenon yourself.
    Take off your glasses, and look at an object that looks blurry. If you make a tiny little “pinhole” by curling your first finger into your thumb and looking through the gap, you can actually see your vision sharpen though it.

    • @riflemanm16a2
      @riflemanm16a2 3 роки тому +9

      Yep, the pinhole basically blocks all light rays that aren't coming straight into your eyeball/lens, and, since all the light rays are coming in from one angle, there's no need to focus them.

    • @PigPharmaceuticals
      @PigPharmaceuticals 3 роки тому +5

      @@riflemanm16a2 Yup! It’s just the DoF/FoV relationship at play, pretty neat.

    • @riflemanm16a2
      @riflemanm16a2 3 роки тому +4

      @Mike Whiskey Romeo Eyelashes are more like a lens hood on an SLR camera. The pupil of the eye is the aperture, the size of which is controlled by the iris.
      Although, I'm not sure how much effect the pupil/iris has on focus since the iris relaxes and contracts based on ambient light and the lens changes shape to focus light. I've never noticed a difference in depth of field in my vision based on how much light is available.

    • @yakivpopavich
      @yakivpopavich 3 роки тому

      Will I be okay using glasses and a night vision monocular?. Or would I need contacts?.

    • @poolee77
      @poolee77 3 роки тому +2

      @@yakivpopavich No. They will work with either or depending on your prescription you can not wear anything and just adjust the diopter to your eyes.
      I have -3.50 vision and my NVGs adjust enough to work for my eye with or without contacts.

  • @trevorbonanno6260
    @trevorbonanno6260 2 роки тому +1

    This is my favorite channel by far. Garand thumb is theatrics and comedy. You are straight to the point, no bs, thems the facts jack...and in a world of jake pauls and matt best....it’s comforting, and I feel like I’ll always come away with good intel after every watch. This and the laser breakdown were great! Keep it up!

  • @davidschlageter5962
    @davidschlageter5962 3 роки тому +2

    Thanks! I will have to watch this a few more times to let it sink in.

  • @GoodOleOkie
    @GoodOleOkie Місяць тому

    Great video!! I Just got my first pvs-14, and ive been excited like a kid with a new toy!

  • @Superiority.mindset
    @Superiority.mindset 3 роки тому +2

    Just got into NODs, your video helped a lot.

  • @f308gtb1977
    @f308gtb1977 3 роки тому +4

    I knew most (but not all!) of the “what,” but not much of the “why.” Thanks Hop! Awesome as always!
    (Yes it made sense, yes it was valuable.👍🏻)

  • @doc_sav
    @doc_sav 3 роки тому +13

    Ah, this was enlightening. Little night vision joke for ya there.

  • @tylergarrett4498
    @tylergarrett4498 3 роки тому +6

    Cool, thanks Hop

  • @koolkats724
    @koolkats724 3 роки тому +3

    Thanks Hop. Well explained, like Bill Nye the science guy with a set of balls!

  • @LeifyGuy
    @LeifyGuy 3 роки тому +4

    This video was solid!

  • @UCUuBKhtCp18o0XNJBaip-4w
    @UCUuBKhtCp18o0XNJBaip-4w 3 роки тому +3

    Great stuff. Thanks.

  • @AmaniLindsey
    @AmaniLindsey 3 роки тому +1

    Solid video Hop!

  • @mobiusonerocks
    @mobiusonerocks 3 роки тому +1

    Excellent content as always

  • @SFish-wr4kh
    @SFish-wr4kh 3 роки тому +4

    Can you do a video on "gain?" I'm still not entirely sure what that does on my PVS-14, and I can't find a lot of information on it.

    • @Hoplopfheil
      @Hoplopfheil  3 роки тому +8

      If you can't tell what the gain knob does it means your tube probably doesn't have manual gain. A lot of less expensive PVS-14s have auto-gain tubes so the knob isn't hooked up to anything.

    • @SFish-wr4kh
      @SFish-wr4kh 3 роки тому +8

      @@Hoplopfheil Well shit, there you have it. Don't even need to make a video. Thanks!

    • @tfwwhennofitlitgf3300
      @tfwwhennofitlitgf3300 3 роки тому +1

      @@Hoplopfheil Some might even have completely fixed gain. Example: the very common MX-10160A/AVS-6 intensifiers designed for the AVS-6/AVS-9 binos have no auto-gating.

  • @thomassymonds6308
    @thomassymonds6308 3 роки тому

    Great Video, Hop! Well done.

  • @ilovefreeski
    @ilovefreeski Рік тому +2

    Another option for the aperture is to get a variable aperture iris filter, there are a lot of cheap mods if you research online.

  • @naten8666
    @naten8666 3 роки тому +1

    Great video. Subscribed. Can go over how you film through your NV devices?

  • @kdkinen
    @kdkinen Рік тому

    Great work

  • @rwcowell
    @rwcowell Рік тому

    Another great video on NV basics.

  • @koalatux5949
    @koalatux5949 2 роки тому +1

    How do you deal with poor eyesight while shooting? Glasses, contacts? Maybe an interesting video idea.

  • @tidypog3272
    @tidypog3272 3 роки тому +5

    How do I reload with a sling on

    • @Hoplopfheil
      @Hoplopfheil  3 роки тому +5

      The same way you always do.

    • @tidypog3272
      @tidypog3272 3 роки тому +1

      @@Hoplopfheil no it's too difficult. Can you make a video about this

    • @Hoplopfheil
      @Hoplopfheil  3 роки тому +2

      @@tidypog3272 maybe

    • @tidypog3272
      @tidypog3272 3 роки тому +1

      @Random Pickle I don't get it can you make a video?

  • @MOAON_AABE
    @MOAON_AABE 11 місяців тому

    What PEQ do you run and have you field tested it's reliability???

  • @OnTeamHumanity
    @OnTeamHumanity 2 роки тому

    Who are the best sellers for nv? Looking at opticsplanet and USNV, but not sure what brands are reputable

  • @stephengeng7971
    @stephengeng7971 3 роки тому +3

    I live in canada we cant get any pvs 14s unless there Canadian tubes which are really bad

    • @Meph648
      @Meph648 3 роки тому +1

      Correction, you can get somewhat OK tubes that aren't terrible if you feel like spending 10k CAD for a PVS14.
      but yeah I feel your pain ;_;

  • @shaboigin4725
    @shaboigin4725 2 роки тому

    Aperture changes where the light entering crosses (focal point), smaller hole (aperture) the light crosses sooner hence seeing things up close better, bigger hole light crosses further, hence blurry foreground clear background. Same concept with the diopter, just moving the focal point to rest on your fovea.

  • @Charlie_Sixx
    @Charlie_Sixx Рік тому

    Hey bud, what kind of lanyard is that your using?

  • @highdragguns
    @highdragguns 3 роки тому +1

    Good info

  • @Meph648
    @Meph648 3 роки тому +2

    Sounds like you need a home made tarsier eclipse using butler creek 09A objective lens cap, and an SK23 microscope iris diaphragm. You'll need to cut a slit into the side of the 09A to provide clearance for the slider for the iris diaphragm and some no-residue tape around the PVS14 eyepiece for a good secure fit.
    Also yall should be careful of daytime caps, they don't make your NOD immune to very bright light. Sunlight can still do bad things to your nods even with the daytime cap on.

    • @KamalasVACANTwomb
      @KamalasVACANTwomb 2 роки тому

      What happens if you’re using nods and someone shines a bright flashlight directly into them? Will it hurt your eyes or actually mess up the internals of the nods?

    • @Meph648
      @Meph648 2 роки тому +1

      @@KamalasVACANTwomb nods can only output a max brightness that is eye safe no matter how bright the input is. At a certain point, damage can occur, but it's a factor of intensity and time. A powerful flashlight for a few seconds won't damage most nods especially if they're autogating and/or have overbrightness-shut-off features.

    • @dr.doofenshmirtz9501
      @dr.doofenshmirtz9501 2 роки тому

      @@Meph648 will that iris work for a size 17 butler creek cap and sac lenses on a set of nocturn katanas or dtnvs from steele?

  • @talltale9760
    @talltale9760 3 роки тому

    Do you have any experience with the Wilcox sacrificial lenses?

  • @brunoabbuhl4283
    @brunoabbuhl4283 2 роки тому

    Awesome thanks 👍🏻

  • @coryw.5755
    @coryw.5755 2 роки тому

    Hop, thank you.

  • @jabr991
    @jabr991 3 роки тому +1

    Solid 🤙

  • @CyberKatze
    @CyberKatze Рік тому

    can a wrong adjusted diopter permamently damage your eye?

  • @nobisspectare3651
    @nobisspectare3651 3 роки тому

    Is shooting with a mono NVG a pain in the behind if you're cross eye dominate?

  • @mortalmonke8844
    @mortalmonke8844 2 роки тому

    Two tubes (EBI .53 SNR 29.5) and (EBI 2.17 SNR 32.3) which of these would i want?

    • @Hoplopfheil
      @Hoplopfheil  2 роки тому +1

      The first one

    • @mortalmonke8844
      @mortalmonke8844 2 роки тому

      @@Hoplopfheil EBI makes a big difference?

    • @mortalmonke8844
      @mortalmonke8844 2 роки тому

      @@Hoplopfheil better EBI has a small center blem too

    • @Hoplopfheil
      @Hoplopfheil  2 роки тому

      Well the EBI difference of those tubes is significant but the SNR isn't. The center blem probably won't affect use but it just might irritate you. Also worse for picture taking.

    • @mortalmonke8844
      @mortalmonke8844 2 роки тому

      @@Hoplopfheil fuck man, what kind of stuff am i going to run into with higher EBI?

  • @Mike-gg7ip
    @Mike-gg7ip 2 роки тому

    What model is in the video?

  • @julian23561
    @julian23561 3 роки тому +2

    Physics, science and shit, my favorite.

  • @deanster3435
    @deanster3435 3 роки тому

    1:59 (?) Administrative Results will remember that

  • @yurimaguski2558
    @yurimaguski2558 3 роки тому

    Hows ur mepc plate carrier holding up so far?

  • @plmkoo6772
    @plmkoo6772 3 роки тому +8

    I’m sure that those lenses cost a lot of bazongas!

    • @Hoplopfheil
      @Hoplopfheil  3 роки тому +8

      You need to behave yourself.

  • @fluffyrider9467
    @fluffyrider9467 2 роки тому

    Why do you have a ranger band on your 14? Just got my first one and trying to learn.

    • @Hoplopfheil
      @Hoplopfheil  2 роки тому +1

      For holding on a video recorder cable

    • @fluffyrider9467
      @fluffyrider9467 2 роки тому +1

      @@Hoplopfheil ok cool thank you I’ll take mine off now lmao 🤣

  • @doughboy334
    @doughboy334 3 роки тому

    garandthumb shoutout 1:42

  • @MOAON_AABE
    @MOAON_AABE 11 місяців тому

    Where and how much did you pay for your Pvs 14??!

    • @Haikeoutdoor
      @Haikeoutdoor 10 місяців тому

      We have the pvs14,about $145

  • @BOB-wx3fq
    @BOB-wx3fq 3 роки тому

    I could never justify buying night vision, not to mention I don't think cell phones are far behind

  • @wonderloaf
    @wonderloaf 3 роки тому +1

    Hi Hop

  • @MrGible
    @MrGible 3 роки тому +2

    Hot

  • @HelliDontKno
    @HelliDontKno Рік тому

    Grand Thumb.... I think you mean "flannel daddy"

  • @StarOasis26
    @StarOasis26 3 роки тому

    Or you can use an IR laser.

    • @0n3racing67
      @0n3racing67 2 роки тому

      And I'll be able to see you too....

  • @MIKETHRASH69
    @MIKETHRASH69 3 роки тому +3

    thanks bro thumbs up!