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The Learning Curve
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The Learning Curve (Weird Science, 1996).iso
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cichlid.txt
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1996-06-14
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CICHLID
This was a HAM picture of a fish in its tank converted to mono.
This is really where flash becomes a necessity, and where modern
systems have made the job much easier. Any satisfactory result is
virtually impossible by any other means of lighting.
The film was Fujichrome 100 in a Canon T90, fitted with a 90 mm.
Tamron macro lens and with the 300TL flash on a dedicated
extension lead.
It is important, as with any animal in a glass tank, that the
flash is positioned to hit the subject with light, whilst not
reflecting light back into the camera lens to cause flare. The
problem is much worse with fish as the amount of light absorbed
by the water will depend on how far back in the tank the subject
is, and how clean is the water.
In the past, the best bet was to guess, and take plenty of
pictures at different settings. Now the camera/flash system can
be set to `off the film plane` automatic exposure and, as long as
the subject takes up the main part of the frame, then there is a
good chance that the exposure will be correct.
In the case of the T90, now sadly discontinued, things are easier
still. The flash can be set to FEL mode, which allows the firing
of a pre-flash. The indicator on the right of the viewfinder then
shows if there is enough light for correct exposure and, if so,
the shot can be taken. Provided the subject hasn`t moved !!!