OK, I may be missing something basic here, but if someone would just
kindly kick me, I'll be fine.

I have a cheap hand held meter that I'm pretty sure is malfunctioning,
but I wanted to find out by how much, so I took it and my three
cameras out to a pretty much 18% grey wall behind my house to compare
readings.  It's a sunny day and I decided to use ISO 100.  

Now never mind what the meter said, it's obviously bad, but it brought
up a question about the Elan 7's metering.  My two manual cameras, an
A-1 and a FTbN, agreed on a reading of 1/500 @ f/6.7-8.  The Elan 7 I
tried in all 3 metering modes, and in CW and Partial I get 1/500 @
f/9.5.  In Evaluative mode, however, I get close to the other two -
1/500 @ f/8.  

I'm metering off an evenly-lit, featureless surface - a grey stucco
wall.  

A)  Why do you think the Elan's meter reads the scene1/2-1 stop less
than the other two, and

B) why do you think the Evaluative mode reads it faster than the other
two?  

My shadow was not in the frame, and I was standing maybe 4 ft from the
wall with the sun almost exactly at my back.  

  
Ken
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