Has anyone used the Firecrest Pro 4x4 Standard ND's 2mm?

[Matthew J Wilson]

Has anyone used the Formatt Hitech Firecrest 4x4 IRND's?

The 2mm Firecrest "Pro Standards" seem appealing for their price and their IR cut. But they're advertised as photography use only.

If anyone has used these I'd be intrigued to know how they performed!

https://www.formatt-hitech.com/filters/firecrest-nd-pro

 

[Bob Gundu]

Get the proper 4mm that are actually 4x4. Plus I’d also recommend the 4x5.6 size.

https://www.formatt-hitech.com/cinema

I would also recommend the NISI ND filters if you’re on a budget.
https://en.nisioptics.com/cinema-nd-filters