What is the "black sky" when using IR film?

[lex_jenkins]

I'd say the fact that Adams said "Moonrise" was one of the most difficult-to-print negatives he ever made had more to do with it. It was a rushed exposure, less than ideal negative (by his high standards) and required highly skilled printers to produce that image.

[pgwerner]

Jonas writes: "This sounds like a fun experiment, but aren't IR films pretty grainy, esp in

the IR range and most celestial objects will still have stronger radiation in the visible

range, meaning that maybe scattering from atmospheric particles may still swamp any

celestial sources even if everything <750 nm or whatever is taken out."

 

Konica IR was pretty sharp, especially if it was processed in Acutol or Aculux. Too bad it

was discontinued.

 

Peter

[ole_tjugen]

Next clear day, I'll put a sheet of MACO IR 820 in my LF camera, put a fast lens and an IR filter on, and make a long exposure with mostly sky. That might show something. I'll let you know.

[flaviosganzerla]

We are waiting Ole...