On Sunday, February 17, 2002, at 09:05  AM, Bill Owens wrote:

> Probably not, but I also get a -1 reading with the ME Super in manual 
> mode.
> Are you saying that using a filter with TTL metering is inaccurate?

Yep.  You'd be fine with colour film, but b&w is significantly less 
sensitive to red.  The orange filter is eating a stop of light for its 
density and requires another third of a stop for the proper exposure on 
b&w film.

It's just like shooting b&w under tungsten lights, where you have to 
open up a stop (or more) from your metered reading to get the right 
exposure.

So, either use a hand-held meter and change your ISO to reflect the 1 
1/3 stop difference, or put the filter on the camera and see what the 
camera's meter reads and then dial in the difference between that and 
the filter's rating (in this case, overexpose by an additional 1/3 of a 
stop).

-Aaron
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