I recently aquired NISI rotating filter holder for my Nikkor 14-24/2.8 Lens which takes 150mm / 6" filters.
Glass polarizers of this size are usually quite expensive, but I was tempted and purchase from e-bay Tiffen Glass Linear Polarizer 6.69" x 6.69" for just 35GBP.
So now I'm wondering about it cutting to 6"x6.69" and there are few things which I'm not sure:
- Is the glass of filter tempered /Toughened/? Usually this can be checked with polarizer glasses.. but this wouldn't work for polarizer filter. Does anyone have some idea how this might be checked?
- What process should be used for cutting? I was thinking initially about laser cutting if glass is tempered, but I guess because of laser is focused light, this might not work for polarizer?
- Normal cutting process also may have problem with cutting multi layer glass /as polarizer/
So if you have any advice or idea for cutting, I will appreciate it.