Selection and Use of Film Magazines 159
Figure 8-6 The purpose of the glass plate. The instant fi lm pack design makes it impossible to
bring the fi lm plane at the same distance as in other Hasselblad magazines so that the image
formed by the lens falls at x, slightly in front of the instant fi lm plane (y). The glass plate
lengthens the distance and moves the image from x to y so that it is formed where it
produces the sharpest possible image
After the last picture on a roll has been taken, the camera’s winding crank or knob can
be turned as usual, so you really do not know that you have reached the end of the roll until
you try to take the next picture. At the end of a roll, turn the fi lm winding crank to pull the
paper trailer through the magazine and around the exposed roll of fi lm as a light protection. It
becomes easier to turn the crank at that point. I suggest winding the paper through as soon as
you have taken the last picture even if the magazine is not going to be reloaded immediately.
Operating Signals
Whenever the insert is removed from the magazine shell, the frame counter jumps back, and
the operating signal in the magazine becomes black. The spring-loaded device that keeps the
fi lm tight on the loaded spool also activates the fi lm consumption indicator, which shows all
white with a new roll of fi lm. As the fi lm is used, more and more red shows in the circular
window (Figure 8-5).
If you want to know what type of fi lm is in the magazine place the top from the fi lm box
underneath the black cover disc.
USE AND APPLICATION OF THE INSTANT FILM MAGAZINES
The instant fi lm magazine did in the fi lm age what the digital back does today — allows you
to see the image that will be recorded in the camera before you shoot the fi nal picture. This
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