> It's a holdover from the days when people in studios, ...
> It's a holdover from the days when to be a Photographer mean't you
knew something about photography ;o)
> or who were doing critical close-up work,
or who were techy types who liked to work things out for themselves
for the hell of it ...
> tried to achieve precision focus by measuring
> the distance from the subject to the film plane with a tape measure
and
> then setting the lens accordingly
How would that have helped them?
Without knowing the inter-nodal distance at the chosen magnification I
mean?
I've actually used the marker in the last week.
Not of course to help me take better photos, just curiosity (and
working out the geometry).
If you look at the "minimum focus distances" published by Canon they
all refer to this marker.
For macro photography of jumpy insects whay is really relavent is the
clearance (distance to the front of the lens / lens hood.
Q
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