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AJSJones wrote:
Not my experience that LP vs CP affects exposure - at least in any significant way.
I'd say it depends on the camera. In the past the reflex mirror probably didn't affect the polarization of light going to the exposure system, but newer (i.e., DSLR) mirrors probably can, and therefore could affect the exposure. You might not notice a half-stop (say) shift, and even less with largely unpolarized sources, but in some instances the effect might be significant.
But with a mirrorless camera, either type of polarizer should give the same result, assuming equal transmission and polarization efficiency.
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