Hi guys! So I recently bought a used Gossen Luna Pro light meter and it seems to not work properly. And I wasn't able to find out what the problem could be and if there's a problem there at all. So here's the thing. I zero adjusted the meter and I use proper 1.35v batteries for it. When I hold the meter against a bright light and use a low light scale it maximum shows me a reading of 10 (the max on the scale is 12 though). Then when I switch it to the high light mode it shows me a reading of around 17. And this behaviour confuses me. Here's how I think it should work. The meter is held against a bright light. Let's say a proper reading should be 17. So if the meter's in the low light mode the indicator should go all the way to the right (around 12). Then if switched to the bright light mode it should read 17. Has anybody experienced a problem like this? What do you think could cause the problem? Should it be recalibrated? P.S. When checking the battery the indicator doesn't go all the way to the red marked area on the scale although the batteries have just been bought (these are Wein cells). Thanks in advance!