Minolta Flashmeter VI spot meter reading off a monitor.

Chan Tran

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• Jul 3, 2022

• #1

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

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• Jul 3, 2022

• #2

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

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• Jul 3, 2022

• #3

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

 

OP

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Chan Tran

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• Jul 3, 2022

• #4

xkaes said:

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

Click to expand...

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.