Posted by Scott Andrews on September 21, 1998 at 08:30:22 in spider-we071.proxy.aol.com:
In Reply to: Re: Forecastle Steam Valves posted by Bob Read on September 20, 1998 at 15:04:47:
Bob,
Two possible explainations for the lower
height I can think of. Any photos we have are
Olympic. The only depictions we have of "T"
are wreck photos shot from above, or Ken M
paintings, or the 1/20 scale model which was
built from much of the same. So, what I think
we'er left with is 1). "T" brake handwheels were
lowered for some reason 2). KM interpretation
in paintings is a little "off". The only thing that
we can say with any certainty is that they are
there. One possibility: take a very good look at
the footage in the opening scenes of "Titanic".
That wreck footage is the real thing, not a
model, and was filmed with high quality lenses,
not the distorting "fish-eye" type nomally used
by Ballard, Tulloch and others, so there is very
little distortion. As they sweep along the bow
the brake hand wheels may be visible.
A note of caution about KM's wreck paintings.
Sometimes the only photos are the ones taken
from above by the camera sled. This gives a
plan view somewhat distorted by the "fish-eye"
affect of the lense. I got this straight from KM
himself at a THS convention. When faced with
this problem, he uses two photos of the same
spot taken a few feet apart, holds them next to
one another and stares at them with his eyes
crossed until a stereoscopic effect occurs,
making the objects appear to stand up off of the
photos. This is how he determines the height,
or "Z" axis dimensions of some objects. There
is no telling what the percentage of error might
be in this technique, so I would suggest taking
those paintings with a grain of salt, I you know
what I mean.
Regards,
Scott