How can I find a dichroic filter...

NeilLNeilL Registered Users Posts: 4,201 Major grins
edited February 16, 2009 in Accessories
.. for converting to 5600K?
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Comments

  • Art ScottArt Scott Registered Users Posts: 8,959 Major grins
    edited February 16, 2009
    NeilL wrote:
    .. for converting to 5600K?

    What are you converting??

    How large does the filter need to be??

    Have you tried your bestest friend GOOGLE yet???:D:D:D

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    "Genuine Fractals was, is and will always be the best solution for enlarging digital photos." ....Vincent Versace ... ... COPYRIGHT YOUR WORK ONLINE ... ... My Website

  • ziggy53ziggy53 Super Moderators Posts: 24,131 moderator
    edited February 16, 2009
    Dichroic filters use a method of interference to act as a band-pass filtering media. As such they are poorly suited for photographic before-the-lens applications including broad spectrum color correction. More commonly they are used to adjust lighting. Color film enlargers' light source and theatrical lighting are 2 useful applications.

    It sounds like you need a color correction filter, but those are designed by application and specific wavelength correction.

    A digital camera and software is remarkably capable of acting as a general color and white balance correction image gathering system. It is true that coupled with a color correction filter of proper specification you can gain better and more even saturation of the image and allow even better and more accurate overall tonalities with subsequent software correction.
    ziggy53
    Moderator of the Cameras and Accessories forums
  • NeilLNeilL Registered Users Posts: 4,201 Major grins
    edited February 16, 2009
    @ Art

    I did do a bit of a quick and nasty look around the net, but turned up all unlikely stuff! I thought maybe I would get lucky and hit up on somebody here with just that topic in their head! And thanks for jogging my mind with those suggestions.

    I have a small video light, halogen, 150/300W, and therefore yellow, and difficult for digital photographs. It is made by Unomat, Germany, ceased operations. It would be a handy addition to my studio equipment, as a spot, background light, or with an umbrella. This company did offer this filter as an accessory, and I have emailed the company who took them over. No reply yet.

    Thanks.

    Neil
    "Snow. Ice. Slow!" "Half-winter. Half-moon. Half-asleep!"

    http://www.behance.net/brosepix
  • NeilLNeilL Registered Users Posts: 4,201 Major grins
    edited February 16, 2009
    ziggy53 wrote:
    Dichroic filters use a method of interference to act as a band-pass filtering media. As such they are poorly suited for photographic before-the-lens applications including broad spectrum color correction. More commonly they are used to adjust lighting. Color film enlargers' light source and theatrical lighting are 2 useful applications.

    It sounds like you need a color correction filter, but those are designed by application and specific wavelength correction.

    A digital camera and software is remarkably capable of acting as a general color and white balance correction image gathering system. It is true that coupled with a color correction filter of proper specification you can gain better and more even saturation of the image and allow even better and more accurate overall tonalities with subsequent software correction.

    Thanks for this information, Ziggy. I understand what you are saying. I'm sorry for not making myself clearer in my original post. I hope I have corrected that somewhat in my reply to Art.

    Thanks again.

    Neil
    "Snow. Ice. Slow!" "Half-winter. Half-moon. Half-asleep!"

    http://www.behance.net/brosepix
  • ziggy53ziggy53 Super Moderators Posts: 24,131 moderator
    edited February 16, 2009
    I understand much better now. You can still find some video lighting applications so that is probably your best bet:

    http://www.adorama.com/ABULDC.html
    ziggy53
    Moderator of the Cameras and Accessories forums
  • NeilLNeilL Registered Users Posts: 4,201 Major grins
    edited February 16, 2009
    ziggy53 wrote:
    I understand much better now. You can still find some video lighting applications so that is probably your best bet:

    http://www.adorama.com/ABULDC.html

    Great, Ziggy! Thanks!
    "Snow. Ice. Slow!" "Half-winter. Half-moon. Half-asleep!"

    http://www.behance.net/brosepix
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