Bill said:

  I think there is a problem with the ME and MES.   
Using just the orange filter, the TTL metering in my
MES (which I THINK is fixed) shows a 1 stop
correction.  The data sheet shows 2 1/3 stops
correction.  This morning I shot a roll of FP4 (ISO
125) in my Yashica Mat, using a Minolta IIIF
incident meter at ISO 25 and the negatives appear
perfect.  Using the MES in TTL would have underexposed
by 1 1/3 stops.

Bill,

I find this a bit surprising.  I checked 3 of my
cameras, an ME Super, Super Program and a k1000 with a
hoya y (k2) filter--the Me Super and the Super Program
did not register any change, and the k1000 may have
moved just a smidge.  I put the filter in front of a
luna pro F and it registered less than 1/3 of a stop
change.  This may mean they were all being consistent
and the change in transmittance was not enough to move
those lovely colored diode lights.  

I have always had this problem with all of my cameras
and so use filter factors and manual metering.  

Didn't someone suggest that filter factors have to do
with the sensitivity of the film and not the light
meter?  That seems to be consistent with what I am
seeing.  How do folks deal with this who don't
manually meter?

For anyone interested, here is a very nice site that
has a lovely filter chart at the end:

http://www.photo.net/photo/filters.html

Dave
Yahoo! Sports - Coverage of the 2002 Olympic Games
http://sports.yahoo.com
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