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largebore

Clarks Summit, US
678 posts

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largebore Silver Member Nikonian since 17th Jan 2011
Wed 01-May-13 11:27 AM

I took this shot of a WhiBal card using 2700K CFL.
2 lamps approx 2:1 ratio. Closer light on the right. { Raw}

I took eyedropper measurements in LR3 at different points on the card.

The wb readings in Lr varied across the card.'
Not a huge amount but enough to ask why?

Left side: 2700K +7 magenta
Right side: 2650K +5 magenta
Bottom center: 2650K + 8 magenta

The RGB values also varied with each location ?

Is this a function of the uneven lighting ?
Bulbs are same age.
No other ambient lighting.


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