Cuiv, The Lazy Geek | Filters LIE to YOU! How to keep manufacturers accountable? @CuivTheLazyGeek | Uploaded December 2021 | Updated October 2024, 2 hours ago.
I've had a bad experience with Baader filters (their new CMOS-Optimized series!) recently, and I want to bring attention to a critical issue with filters in general: they can be worse than their quoted specifications.... and we have no way to know!

Spectrometer company I am in contact with: goyalab.com
Their IndiGo spectrometer: goyalab.com/product/indigo-visible-spectrometer
Their GoLight light source (available Mid-January at the earliest): goyalab.com/product/golight-white-flat-spectrum-light-source

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