Q & A

Do edge filters work differently at 0° vs 45° incidence?

Lyra | 2025-09-10
Do Edge Filters Work Differently at 0&de⋯
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Why is my longpass leaking blue/green—spec or setup issue?

Lyra | 2025-09-10
Most 'blue/green leak' from a lo⋯
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Longpass vs. Shortpass vs. Notch Filters: How to Choose for Stray-Light Control

Lyra | 2025-09-10
Stray light—unwanted illumination ⋯
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