Minolta Flashmeter VI spot meter reading off a monitor.

[Chan Tran]

I have a rather 3 rather old NEC 2190UXp which are S-PVA TFT monitors. I calibrate the white point to 100cd/m^2. To check this level with my Minolta Flashmeter VI in spot mode I found when I read the monitor normally I have 9.5EV for ISO100 which is about right. But when I turn the meter 90 degree it only read 8.9 which is significantly lower. I wonder this is the characteristic of the S-PVA screen or it's the meter?

 

[Mr Bill]

Hi, I have no idea what S-PVA is, but the meter behavior suggests to me that it has a beamsplitter inside (meaning sensitive to polarization of light).

If you have a polarizing filter I expect that you'll know how to test for this. (If not, just ask.)

 

[xkaes]

Just take a picture at each setting, and remember to use the meter in the position that created the best result.

 

[Chan Tran]

Just take a picture at each setting, and remember to use the meter in the position that created the best result.

I don't mean to take a picture of the screen. I wonder why the spot meter gives me 2 different readings. I guess the meter has some source of polarizer.