Quote Originally Posted by vanourek View Post
I meter the Efke IR820 AURA at ISO 1,5 to 3 with a 720nm filter, exposure times in daylight at f/22 are very long. See the picture on this link: http://ladavanicek.cz/krajina_1/5032...4a36590c_b.jpg - it's the IR820 AURA 6x7 negative, exposure - as far I can remember - about 15 seconds in sunny afternoon.
I love that picture!

Jeff