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  1. #11
    Dan Quan's Avatar
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    Quote Originally Posted by pierods View Post
    I see guys. Thanks for explaining. Then I have two questions:

    - a honeycomb filter in front of the strobe could possibly match a fresnel?
    - do i need to paint my walls grey to avoid uncontrolled bounce or there are other (cheaper) ways to keep it in control?

    No, a fresnel focuses or defocuses the beam of light. A honeycomb adds a degree of control of the spill.

    Hang Duvateen or Comando cloth as needed. The 16oz prevents light passthrough, for use over a window or in front of a source.
    http://www.rosebrand.com/shop/result...words=duvateen

    edit: http://www.rosebrand.com/subcategory...h-duvetyn.aspx
    Last edited by Dan Quan; 04-09-2012 at 05:09 PM. Click to view previous post history.
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  2. #12
    pierods's Avatar
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    Quote Originally Posted by Dan Quan View Post
    No, a fresnel focuses or defocuses the beam of light. A honeycomb adds a degree of control of the spill.

    Hang Duvateen or Comando cloth as needed. The 16oz prevents light passthrough, for use over a window or in front of a source.
    http://www.rosebrand.com/shop/result...words=duvateen

    edit: http://www.rosebrand.com/subcategory...h-duvetyn.aspx
    fantastic, thanks!

    so a focused light will be always harder than a non focused light, I must understand?

  3. #13
    Dan Quan's Avatar
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    Not necessarily, the sun is not focused but can provide a shadow with a very distinct or hard edge transfer because it's so far away and relatively small. But, with artificial light sources a focused light will generally provide a sharper edge transfer than a non-focused light. And the edge transfer will be more abrupt the closer the occlusion is to the shadow, and become more diffuse as the distance between the occlusion and shadow increase. This is where a focused, or smaller source at a greater distance can really be appreciated.


    edit: With most light sources (I am not familiar with ALL light sources) the edge transfer will be more abrupt the closer the occlusion is to the shadow, and become more diffuse as the distance between the occlusion and shadow increase. This is where a focused, or smaller source at a greater distance can really be appreciated.
    Last edited by Dan Quan; 04-09-2012 at 06:49 PM. Click to view previous post history.
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    stand in the place where you are

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