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Sigma SD 14/15 IR dust filter sub.

Started May 3, 2020 | Discussions thread
SigmaTog
SigmaTog Senior Member • Posts: 1,114
Re: Sigma SD 14/15 IR dust filter sub.

This shows the vast differences in UV/IR cut filters, aka Hot Mirrors....
Sigma is usually about 420nm - 680nm.....It is more like the red on the left & between the green & the violet on the right......
https://www.cloudynights.com/uploads/monthly_02_2019/post-90331-0-55407200-1550846103.png

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