A little while back, Kirk Gittings posted a note retracting his
assertion that there's no real value to the Zone VI modifications to
the Pentax Digital Spotmeter.
I don't recall what exactly Kirk said in his retraction post, but
something in it didn't jibe with what I'd experienced and since I
actually own both a Zone VI modified meter and an unmodified one, I
set out and did a little testing to compare the two. I posted a
little note on my conclusions on Kirk's thread a few weeks back,
then had to take time off for other things.
I'm still interested in why some people seem to experience a
difference between the modified meter and the unmodified one. I
don't see much difference, although I did find that the unmodified
meter had better flare characteristics the the modified one.
I did metering in direct sunlight, shade, overcast, tungsten
light. I metered all the different colored patches of a Macbeth
color checker. I metered through filters as well as without filters.
My data as well as a description of how I got them, along with
some tentative conclusions, are on my web site at
I'd be very interested in having folks take a look and make
suggestions on ways to improve the experiment or make comments on