IR ND's with EPIC?

[Stephen Pruitt]

I highly doubt if this is a fixable issue. I think it is just part of the design, which apparently works very well for some users, and less-well or not at all for others (like me). Given that there are other alternatives that do work very well (Formatt's IR+ND), there would also seem to be little upside for Pancro.

Stephen

 

[Brian Dougherty(PANCRO)]

Hey guys-It is essential that you are using high end lenses in conjunction with our filters. Here is a quote from Pawel Achtelawel is a multi international award winning marine filmmaker based in Sydney, Australia. He has a masters degree in engineering and a solid background in physics.

He specialises in underwater and landscape cinematography. His underwater footage library combined with time lapse collection represent the highest quality footage available in full HD, 2k and 4k formats. He is also in a part of the hemisphere with some of the most harsh lighting conditions in the world.
He's a good resource when it comes to correct use of our pancro Ir+ND filters. We have done extensive testing with Pawel as we want to resource our clients regarding proper usage and outfitting.
This is a what he says about lenses.

" some lenses have highly reflective coatings and may cause internal reflection off the filter. Use good lenses, such as Red, modern Cooke or Zeiss* no problems there. Some old beaten glass may not have the type of optical quality (transparency) needed for compatibility with mirror-type filters. It is an important consideration when choosing a lens. In my experience, Arri-Zeiss Master Primes as well as Red 300mm prime are perfect for using mirror-type filters and I found no side effects even in the most difficult lighting conditions."

Pawel is currently filming with Red One Digital Cinema Camera using Arri Zeiss Master Prime Lenses. No reflection problems.