Olympus XA1 Anleitung Handbuch - Seite 7
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~~Let's measure the hinge end to body gap~~
XA, XA1 and XA2 models shown in this demonstration
How do we know what the actual thickness of the gap is in a camera? How do we measure that
accurately so we'll know just which seal material will work best for us? Here's a method I've
used for several years. You can do this, also. You don't have to use a dial gauge. You can usually
tell the thickness by visual examination.
First frame above...I place a bit of common clay into a tiny fold of waxed paper.
Middle frame above...I close the film door and latch it. The waxed paper keeps the clay from
sticking and falls out when the door is opened, preserving the measurement exactly.
Third frame above...I carefully use a dial gauge to measure the clay. As you can see, it is .028
inch. We know that 1mm = .0394 inch.
Therefore, 1mm thick foam will give you a compression ratio of almost exactly 25%, which is
ideal.
The 1mm thick fabric seal I sell is actually a few thousands of an inch less than .0394, and it will
provide a compression ratio of slightly over 20%, which is ideal for a fabric seal.
Whichever
you choose will work fine.
Take your time....use the "good stuff"....do it right.
Jon Goodman --- 2006