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Author Topic: Diffractive material used in DNG Flat Field  (Read 1143 times)

wildwoodpugh

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Diffractive material used in DNG Flat Field
« on: February 05, 2013, 12:21:21 AM »

What do you recommend for the diffractive material used in the DNG Flat Field demo provided in the LR4 update with Eric Chan? Also, can this material be used when doing custom white balance?
Thanks for the help.
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ErikKaffehr

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Re: Diffractive material used in DNG Flat Field
« Reply #1 on: February 05, 2013, 12:47:41 AM »

Hi,

I presume you mean diffusive?

Best regards
Erik

BartvanderWolf

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Re: Diffractive material used in DNG Flat Field
« Reply #2 on: February 05, 2013, 10:38:23 AM »

What do you recommend for the diffractive material used in the DNG Flat Field demo provided in the LR4 update with Eric Chan? Also, can this material be used when doing custom white balance?

Hi,

I use a piece of opaline glass, but you can also use white plexiglass or similar. Just make sure it's a neutral (white) color, and diffuse enough to produce a nice uniform average of the scene in front of the camera.

Cheers,
Bart
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wildwoodpugh

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Re: Diffractive material used in DNG Flat Field
« Reply #3 on: February 06, 2013, 11:28:23 AM »

Thanks for the help Bart.
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Rand47

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Re: Diffractive material used in DNG Flat Field
« Reply #4 on: February 06, 2013, 07:07:19 PM »

I use one of these.   Handy, light.

Rand
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