Confused about LCD luminosity
In the old days of CRT’s a luminosity of 90 was correct. For LCD’s first Gratag Mcbeth advised 140 but corrected that after 12 months. Now the norm seems to be 120. I bought a new LCD monitor from EIZO, CE 240W. Eizo delivers software that works with the Xrite iOne which makes it easy to calibrate. As standard setup for photographers the profile is 6500, 2.2 and for luminosity 80. Is this correct? I have not yet been able to test but since my prints with luminosity 120 were spot on, with home brewed profiles, I expect them to be to light. Why the differences in advice? ?
I don't believe there is a "correct", only recommended. Personally I don't remember ever seeing 80 recommended ... it's more like 110-130 with LCD displays.
The "correct" setting is the one that delivers the same visual brightness as your viewing conditions when evaluating a print. If you can adjust the brightness of the viewing conditions, then you can set to a standard, and make the adjustment with the brightness of the viewing station/area. If your viewing area does not have variable brightness (such as my GTI desktop viewer), then you adjust the monitor luminosity(brightness) to achieve a match ... I do this by comparing by the white of an unprinted piece of paper against a blank white document in Photoshop. In my case, the Apple 30" cinema display matches at 115.
You shouldn't expect prints to be light or dark ... the very purpose of dialing in this setting is achieving a density match with printed output. Use whatever luminosity that achieves this as the end result.