Originally posted by miltona580 I have calibrated it for my favorite photo processor. Is that the same thing?
No, it is not the same thing. Monitor calibration means having the monitor conform to a set of standards for color and brightness. Color calibration is based on international conventions, but brightness is based on user preferences, which I won't discuss here.
Be that as it may, exposure has nothing to do with the brightness of the monitor and everything to do with the range of tonal values that is recorded by the sensor. Generally, this is reflected in the histogram, but what really matters is whether detail is present in the brightest highlights and the darkest shadows. With raw capture, there is considerable latitude for correcting exposure in post-processing, but if detail is absent, it cannot be recovered.
Rob