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Camera / Lens recommendations

Discussion in 'Night Vision Optics and Illumination' started by Tech-Hunter, Feb 11, 2014.

  1. Tech-Hunter

    Tech-Hunter Well-Known Member

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    Ok so I'm looking to make a scopeless setup, I'm looking for the camera board type so I can mount it in the housing I have. £50-60ish for board plus the cost of a recommended lens. I will be shooting at around 30-40yds max. Any help would be great.

    Cheers
     
  2. bramley

    bramley Active Member

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    Have a look at Rolaids Bench on YouTube and also someone on here has posted a scope-less setup in the last week or two.
     
  3. Tech-Hunter

    Tech-Hunter Well-Known Member

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    Ok nice one, I've seen Rolaids Bench, will probably go a slightly different way, I'll look for that thread cheers bramley.
     
  4. terry1001

    terry1001 Major Poster

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    If you want to build a scopeless unit you don't need the ultimate camera as the performance is so much better without it having to peer through a rifle scope.
    I suggest a camera that will acccept c/cs mount lenses or has the potential to be able to mount a c/cs holder using the 2 holes in the board either side of the sensor. These lense are better quality than the S mount/MTV type that most board and bullet cameras come with. If you are hoping to use privacy masks to create a reticle then make sure that the camera has an osd for the menu and supports privacy masks.
    Zooming lenses is virtually 100% certain to move the zero so you will be better off with a lens with fixed focal length or be prepared to lock the zoom in place. If you are happy with low magnification then a 50mm lens will give you about 3-4x but you will probably want something in the 70-100mm range.
    I've been considering one of these http://www.ebay.co.uk/itm/261157401659?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 but haven't yet done anything about it, I'm thinking it would work well for either scopeless or a spotter.
     
  5. rmpc50

    rmpc50 Active Member

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    I have looked at this myself but only considered it as a spotter, I'm probably being a bit thick but if it was used in a scopeless setup how would you fix it to a scope rail :confused:

    Also would it not be better with a manual iris as opposed to auto?
     
  6. some bloke

    some bloke Busy Member

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    Dunno if anyone on here is interested but £30 gets you one of these 30mm O/D tubes with a thread at one end to accept a C or CS mount lens so its as rigid as a rigid thing. You then just bung an EJ230 bullet camera with no adaptors up its bum till it focuses, pinch it into place with a grub screw and Bobs yer uncle:

    http://smg.photobucket.com/user/Dave-G/media/CSmountthread_zpsbbf7c503.jpg.html?sort=3&o=14

    http://smg.photobucket.com/user/Dave-G/media/Loupe2_zps8a1f94c0.jpg.html?sort=3&o=3

    http://smg.photobucket.com/user/Dave-G/media/DSCF0298_zps6e7f4e29.jpg.html?sort=3&o=6

    https://www.youtube.com/watch?v=sn49fiTBluw

    https://www.youtube.com/watch?v=TE5s-kSF7ew

    I'm waiting on an injection moulder to mould the DVR fixing plate which will position the screen further away than a scope ocular lens so your eye will focus to it while maintaining the usual cheek welded shooting position.

    Price of the tube is currently £30 but will rise a little when the project gets under way with the DVR mount.

    These are primarily being made with the home builder in mind who won't need access to a lathe or any other power tools. A precision mini slotted screwdriver will be need though.
     
    Last edited: Feb 12, 2014
  7. terry1001

    terry1001 Major Poster

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    These cctv cameras will have fixings of some sort and should be fairly easy to mount properly and firmly onto a rifle. I haven't actually seen one, hence my comment on considering, but I wouldn't see any problems on that score but I do have all the equipment needed to fabricate a mounting system.
    The auto iris would be helpful, in my opinion, in controlling the light between day and night shooting. It's not an essential feature by any means although some form of iris control is required as the cameras don't see to be able to cope with the huge change in light intensity.
    The tube that Dave is offering would be a great help for people who want to go down the scopeless route but don't have access to a lathe. The c/cs thread allows (obviously) the use of c/cs lenses but could also be used, with the appropriate adapter, with slr camera lenses. If you're considering a scopeless build then I would suggest a lens with as few moving parts as possible, changing zoom and focussing is highly likely to cause a shift in the optical axis which will move your zero. Camera lenses are not designed to achieve this in the same way that scope sights are, it's just something to be aware of and shouldn't put people off building them.
     
  8. Tech-Hunter

    Tech-Hunter Well-Known Member

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    Sorry all I forgot, to thank you for your advice. Parts ordered now just waiting for delivery, Lathe and Pillar drill on standby..
     
  9. Tech-Hunter

    Tech-Hunter Well-Known Member

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    If you're considering a scopeless build then I would suggest a lens with as few moving parts as possible, changing zoom and focussing is highly likely to cause a shift in the optical axis which will move your zero. Camera lenses are not designed to achieve this in the same way that scope sights are, it's just something to be aware of and shouldn't put people off building them.[/QUOTE]

    How do I focus the image at different ranges, if moving the focus ring also moves Zero..

    Cheers
     
  10. FGYT

    FGYT Engaging Member

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    blimey what is your set up charge on the Injection moulder I was quoted £3-4000 to make the mould for a simple item. by our local IM company

    are you looking to get eh tubes CNC machined in batches
     
  11. terry1001

    terry1001 Major Poster

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    How do I focus the image at different ranges, if moving the focus ring also moves Zero..

    Cheers[/QUOTE]
    The way I have done it is to focus it using ir in the dark at a sensible range for whatever you're going to be shooting so maybe for rabbits 30 yards. IR light and white light focus at different points but in daylight you can close down the iris on the lens which will improve the depth of field, meaning that it will be in focus over a much wider range. This is why I thought an auto iris lens would be helpful.
    When you get it built you can test the effect of ,oving the focus (and zoom) rings to see if they do have an effect on the poi as you may be lucky, it's the only way to be certain. Zooming is more likely to cause a shift than focussing, it all depends on the lens and how accurately it's fitted to the camera. It's best to be aware of the possible problems before you start testing and wondering why it doesn't work how it should.
     
  12. Tech-Hunter

    Tech-Hunter Well-Known Member

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    Cheer for explaining that terry, nice one mate
     

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