Halation can be a good thing.
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Halation can be a good thing.
Wayne,
Imagine three or four of those film hangers in the picture nested on top of each other laying in a tray. Pick them all up, shuffle order, put the stack back in the tray. You get all the agitation and sloshing action in the shuffle. The film is secure in each hanger with a separation between each sheet about the thickness of the hanger... I can try to put together a picture or two if it would help.
Bill
Explain halation to a dofus!Quote:
Originally Posted by Andrew O'Neill
Quote:
Originally Posted by gth
http://www.merriam-webster.com/dictionary/halation
http://en.wikipedia.org/wiki/Anti-halation_backing
Beyond
ha·la·tion noun \hā-ˈlā-shən\
Definition of HALATION
1
: the spreading of light beyond its proper boundaries in a developed photographic image
2
: a bright ring that sometimes surrounds a bright object on a television screen
Origin of HALATION
halo + -ation
First Known Use: 1859
Man you're quick on the draw!!Quote:
Originally Posted by SergeiR
yup. Faster to paste link from corresponding search than to type explanation.
As addition i might say that actually anti-hallation backing was also made before invention of film, on glass plates. However it was quite expensive in comparition.
No problem! Thanks!Quote:
Originally Posted by SergeiR
I guess what I meant what does it really mean in terms of practical picture making.
From wikipedia.... A historical tid bit..Quote:
Originally Posted by Andrew O'Neill
"The lack of an anti-halation layer in Kodak's High Speed Infrared film (HIE) is the cause of the ethereal "glowing" effect often associated with infrared photography,[1] rather than an artifact of IR itself."
Fuzzy edges or entire rings around very light objects. If you type "halation" in google images you will get some nice examples.Quote:
Originally Posted by gth
Apparent softness, basically, if you shooting landscapes. Thats why film with AH backing became very popular with landscape shooters very quickly - it was cheaper too.
Of course nowdays people shoot IR and getting it back :)