On Fri, 13 Nov 1998, Wayne Harridge wrote:
|> I really need to calibrate my meter to Velvia, but on a bet I'd say 40 ASA
|> is still reasonably conservative. The last roll I shot at ASA 50 I
|> invariably preferred the bracketed shots which were 1/2 stop
|> "overexposed."
|> That would be ASA 25! However, in other, previous circumstances where
|> there wasn't a lot of shadows, 50 ASA was fine. The best practice I would
|> say is to shoot the film at 40 or 50 and bracket.
|>
| 1/2 stop overexposed would be about ISO 32, ISO 25 is 1 stop over.
1/2 stop over would be 37.5 ISO; 32 ISO is 2/3 stops over.
John (... being persnickity and disgusting ...)
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