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IR filter lenses

  • 18-09-2011 11:02am
    #1
    homerhop
    Registered Users, Registered Users 2 Posts: 1,956 ✭✭✭


    Has anyone used or have any experience of these for foxing?
    Can they be used without night vision?


Comments

  • #2
    johngalway
    Closed Accounts Posts: 10,271 ✭✭✭✭johngalway


    homerhop wrote: »
    Has anyone used or have any experience of these for foxing?
    Can they be used without night vision?

    :confused: What would be the point? IR lenses cut out visible light so you can use a NV device to pick up non visible (slightly not true in all cases) light and "see".

    You may as well keep the lamp off if you use an IR filter without a NV device :D


  • #3
    homerhop
    Registered Users, Registered Users 2 Posts: 1,956 ✭✭✭homerhop


    hence the reason for asking John ;) I know nothing about them and was wondering how they work.


  • #4
    johngalway
    Closed Accounts Posts: 10,271 ✭✭✭✭johngalway


    Basically, the IR filter filters out most visible light (you'll still see a dim red glow from mine). There is I believe filter material available that cuts out that glow, but that I think alters the light frequency and may work better or worse with differing units. Some animals people reckon can still see some light emitted by IR filters.

    I've a Yukon Ranger for spotting. I don't use it much because it's another few things to carry around. But it works, have watched foxes and rabbits with it. I changed the 5x lens to a 2x or 3x lens to reduce magnification and increase field of view. NV can be fiddly, altering the focus to see at different ranges.

    Not many foxes that can't be got without it TBH. And if there's only one NV device between a pair, it makes for a dull night out for someone.

    I've the makings of a NV unit here, just need to clear the time and space to make it.


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