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cmos sensor in the Yukon Photon

Discussion in 'Night Vision Optics and Illumination' started by Harwich Shooter, Jul 20, 2014.

  1. Harwich Shooter

    Harwich Shooter Donator

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    Do any of you DIY boffins know what sensor is inside the yukon photon? I would dearly love to find out and maybe obtain one on a board camera so that I can play with scopeless and add on projects.

    Buying CMOS board cameras from China is a bit hit and miss to say the least.

    (I have pretty much exhausted the CCD line of board cameras)

    Ta very muchly.

    Paul
     
  2. blueheckle

    blueheckle Donator

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    As far as ive read its a 1/4" cmos chipped camera.
     
  3. Harwich Shooter

    Harwich Shooter Donator

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    Thanks blueheckle. I'd love a bit more detail if possible.
     
  4. Harwich Shooter

    Harwich Shooter Donator

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    Bump. Anyone know? Just curious.
     
  5. terry1001

    terry1001 Major Poster

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    As far as I know nobody has taken one apart and identified the camera. I imagine that Yukon have set the camera up specifically for night vision use probably through menu settings but possibly with custom firmware. Since they have a mono screen there is no need for the camera to work in colour at any time which should help in tweaking the settings.
    I don't think that there is much to choose between CMOS and CCD cameras in terms of low light performance. If you really want to try some out you could have a look at 'edogpro' on ebay, they do list a few but watch out as some are 1/4" sensors or for more choice they have a sister company Security Camera2000 http://www.securitycamera2000.com/ Both are, in my experience, reliable sellers and SC2000 may well be able to offer some suggestions if you email them or they do also have a UK phone number.
     
  6. Harwich Shooter

    Harwich Shooter Donator

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    Thanks Terry, a bit addictive or what. I am looking for a good quality cmos or ccd board camera for my scopeless build. I have already made it but the present camera, when switching on, flickers on/off 4 or 5 times before stabilizing. This is very annoying. I am using a plastic project box and a 135mm camera lens. All good so far but I am in the process of moving house to sunny suffolk (Brantham) in the next couple of weeks so all (regretfully) of my little projects are now boxed up. Off out shooting tomoz so no real complaints.
     
  7. terry1001

    terry1001 Major Poster

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    SC2000 had a couple of CMOS board cameras which looked to be suitable for nv use and should be fine for a scopeless build. Personally I think I might risk up to maybe £20 on an unknown unit but if it were going to cost any more then I think I'd go with the e700 and have a fair degree of certainty of good performance.
    The flickering you had might be the automatic gain sorting itself out as it adjusts to the light level although it could be other things. If you can set the AGC to 'off' or 'manual' you might be able to get some improvement.
    What sort of ranges are you shooting at with the 135mm lens?
    You should get on fine in Brantham, they're quite used to Essex boys being so close to the border :)
     
  8. Harwich Shooter

    Harwich Shooter Donator

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    Thanks Terry, coming from Harwich I have never considered myself an Essex Boy. I married a Brantham girl so I have good taste.
    Thanks for the tip with the AGC. I am shooting around the 32 metre range and the rabbits don't half look big :)
     
  9. terry1001

    terry1001 Major Poster

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    I have (if I remember correctly) a 'spare' 135mm f2.8 lens laying around somewhere and my intention is to try some surgery on it, removing the rearmost lens group to see what effect that has on the focal length. I believe that this has been done with reasonable success so I'm keen to try it as this should also improve the light transmission of the lens although it may mean that the camera sensor needs to be up inside the lens body.
     
  10. Harwich Shooter

    Harwich Shooter Donator

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    Good luck with that Terry. I will post some pics of mine once I have completed the move to the Sunny side. :)
     
  11. weebster

    weebster Posting Addict

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    I've been messing with a couple of cmos board cams,one was a 1/3 imx 138,and t'other was advertised as a 1/3 but I'm 99% sure it's a 1/4 imx 139....
    Anyway I did a quick bit of filming using the 1/4 imx 139cmos based spotter and a pentax 12.5-75mm lens,apologies for the shakey footage but it wasn't easy trying to hold the dvr and adjust the lens on the spotter.
    First part is lit up by cheap ir from the garden camera,t20 comes in at around 36 secs,almost dropped the damn dvr trying to plug the t20 in :eek: :D
    There seems to be a 1/2.8 and a 1/2.5 format imx 138 cmos board around as well as the 1/3 but I haven't yet managed to buy just the bare board,at the moment I've only found them in cctv cameras,might have to buy one just to see if it's any better than the imx 139.
    Might get the tripod out tomorrow night and film some footage up the field...anyways,some shakey footage!

    https://www.youtube.com/watch?v=crHFu1ClqJU&feature=youtu.be


     
    Last edited: Aug 2, 2014
  12. Harwich Shooter

    Harwich Shooter Donator

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    Thanks Weebster. Couple of questions/requests. Can you post a link to where you purchased your cmos camera? What distance where you filming at?

    many thanks.
     
  13. weebster

    weebster Posting Addict

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    The house in the vid is around 50 yds and the tree around 67 yds
    got the first one from this place http://www.dhgate.com/product/mini-...rd-security/157747477.html#s1-16-1|4139453168

    Search for it on ebay as he's on there as well (might be a different name though) and it was £5 cheaper on ebay than dhgate,I don't believe the 1/3 stated on his listing on dhgate,having compared to a 1/3 imx sensor the 139 is smaller.....and everyone else seems to list the 139 as a 1/4 format.
    Failing that it's the imx 139 cmos sensor.
     
    Last edited: Aug 3, 2014
  14. weebster

    weebster Posting Addict

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  15. Harwich Shooter

    Harwich Shooter Donator

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  16. weebster

    weebster Posting Addict

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    Yes I see the imx 138 is now available with osd,the 1/3 standard (1000tvl) imx 138 I had didn't perform as well as the 139,will be interesting to see whats on the menu. ;)
     
  17. blueheckle

    blueheckle Donator

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    Would this cam be any good for a spotter chaps tks.
     
  18. weebster

    weebster Posting Addict

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    That footage above is from my spotter....tried the pentax lens on a sony mini box cam tonight (icx 639 ccd 1/3 sensor) and the sony didn't like it :eek:...it would only focus on the max 75mm setting on the lens by closing down the iris which made for a darker picture....odd that the pentax works fine with the cmos at max 75mm and f1.8 but the sony was higher on the f number before the tree came into focus....will have to try it at a greater distance than 67-70yds with the sony.
    Will have to get another 5in screen first though as trying to focus on the 2in dvr screen wasn't easy on the old eyeballs....even with nose bino's :D
     
    Last edited: Aug 4, 2014
  19. terry1001

    terry1001 Major Poster

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    Sounds like your lens isn't quite the correct distance from the Sony sensor, when you've stopped the lens down and increased the depth of field you can get it in focus. My guess is that it needs to be a touch closer.
     
  20. weebster

    weebster Posting Addict

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    I was thinking that,the sony mini box camera has a threaded fitting that screws in/out and is secured by a small screw,this does away with the need for a 'c' mount 5mm spacer as the lens screws into the threaded collar and can then be adjusted nearer/further from the ccd sensor and secured via the screw....I can't remember the last time I used it but I may have adjusted that part and not reset it for c mount :eek:....got a panasonic board cam with 'c' mount ability here,will check with that one later :D
     
    Last edited: Aug 5, 2014

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