Using the above
formula, I calculated the optimum film tighness (FT) to achieve maximum
film flatness (FF.) After an in vain attempting at contacting the
mechanical engineers at Eho-Altissa, I constructed the required
slip-drag clutch in my home machine shop. It is pictured to the
left. The assembly required two identical clutch plates to avoid uneven
horizontal film tightness across the width of the film.
The new clutch assembly produced an increase of .2 inch ounces required
to advance the film. Obviously this improved film flatness by 2.873
FFP's. A significant increase.
The film rollers were removed and machined on a Sylvester and Tweety
Model 52 precision lathe. A Bugs and Fudd subminiature vacuum pump was
installed to remove all air from the film chamber. Overall film
flatness increase was 3.2134 FFP's.
The full takeup roll was much tighter after the work noted above.
However the Altissa revealed itself to be simply a cheap camera with a
pretty face. Many men have fallen for such a combination.
I think I'll try some portraits with it, someday.