Do optical WB filters improve RAW color latititude?

Started Aug 26, 2012 | Discussions thread
Mako2011
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Yes and things changed
In reply to John Sheehy, Aug 27, 2012

John Sheehy wrote:

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.

Correct

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.

And the filter can only keep light from hitting the sensor.

Bottom line, the final product looks better when color effects are done digital using current gen software than when done using color effect filters. Software has now done to color effect filters what current gen sensors have done to film. That leap came in the last 12 months really with upgrades to Photoshop, Topaz, and Nik. There really is no need for color effect filters outside a lab environment or when still using film.

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