I have a Konica "nice print system" densitometer I bought on eBay. It was reading ok for a while, but it was a little off (compared to a calibrated step wedge.) I noticed that there was some dust in the reading area, so I blew it out with some dust-off. Now I get strange readings... 2 minus the reading gives me the correct reading. It also has a minus sign in front , but I'm not sure if it was there before.
For instance I read
-1.96 for a wedge that's calibrated valuel is .04
-1.83 = .17
-1.67 = .33
etc.
Does anyone know this densitometer? I guess I could use it like this, but it's a pain.
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