...but never forget the phenomenon of 'subject failure'...a metering target which fails to match the assumption of average brightness of 18% gray. Even TTL meters cannot remain immune to subject brightness induced metering error!
In which case you have a reliable stand-by tool: an incident meter.
.::Gary Rowan Higgins
One beautiful image is worth
a thousand hours of therapy.
"It is horrifying that we have to fight our own government
to save the environment."