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Old 06-07-2013, 11:26 AM
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Octane (Humayun)
IIS Member #671

Octane is offline
Join Date: Dec 2005
Location: Canberra
Posts: 11,158
If you're truly anal, you'll use flats for each filter. Otherwise, if the filters are clean, you should be able to get away with whatever you have.

If you bin 2x2, you effectively quarter the exposure.

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