I still have to make some validation with people working on petrology here. I don’t think lens affects polarization. Anyway, I’m aware of this development which would solved the issue. However, one important requirement is that the user should know the relative position of polarizers. This is not something that you can easily infer from the image, as the C270 has automatic low light compensation. That’s why I decided to create a polarizer holder that has 2 fixed positions.
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