Do optical WB filters improve RAW color latititude?

Started Aug 26, 2012 | Discussions thread
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John Sheehy Forum Pro • Posts: 17,838
Re: Not just higher ISO

Mako2011 wrote:

John Sheehy wrote:

I already said that color filters can be counter-productive if they force a higher ISO.

Compared to using modern digital software (less than one year old software solutions), color filters are always the less optimal choice regards final IQ. The only exception might be certain specific situations of very long exposure at base ISO. Lab testing of optics/lighting come to mind.

No "modern digital software" can change the SNR of the capture and digitization.

If you shoot at base ISO, even for a short exposure, you are going to have more noise in the red and/or blue channel than if you had changed the color of the light hitting the sensor to perform the WB. You magical "modern digital software" can only emulate better SNR by removing detail.

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John

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