Infrared Filters

Discussion in 'Large Format Cameras and Accessories' started by SAShruby, Sep 23, 2009.

  1. SAShruby

    SAShruby Member

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    Since I'm in Large format, I guess I'm going to post here. There are some IR filters on Ebay from China. I'm looking for 95mm one in 720nm range. They go usually for $100 or so. Did anyone had a chance to test those?

    Are they worthed those bucks?
    Thanks
     
  2. keithwms

    keithwms Member

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    $100 is very inexpensive for an IR filter of that size. If they are good then it's quite a good deal. I think I dropped 2 or 3 times that much for a 77mm filter with similar cutoff, from Hoya.

    I would try to find out whether the filter is plastic or glass based, whether it has any coating, whether the threads are plastic, and perhaps you can ask them for a transmission spectrum.
     
  3. tiberiustibz

    tiberiustibz Member

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    I found a 58 odd millimeter 720mm for $25 on the bay but I'm told that's rare.
     
  4. Mike1234

    Mike1234 Inactive

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    Any interest in a 4x4 Kodak Wratten gel in perfect condition?
     
  5. paul_c5x4

    paul_c5x4 Subscriber

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    Yes please - I've got a gel filter that is starting to show some damage, so it could do with being replaced.
     
  6. Mike1234

    Mike1234 Inactive

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    I'll research prices and sell it at a substantial discount. I don't think many of the gels I have were ever used... at least they look brand new with no water damage or scratches. Some are still sealed.