Barker Super 8 Basic Manual - page 6
The length of the intervals can be changed. The range is usually from about
1/3 second to 60 second intervals. There are many different ways of how the
timer works and some of them are a bit complicated so you just have to try
different combinations:
Through the Viewfinder
Adjustment Ring/ Diopter setting-
Most middle to high- end cameras have a diopter setting for focusing the
viewfinder for users eye. There are different ways of adjusting the diopter, but
it is usually done by somehow rotating or moving the eyepiece. In most cases
there is a locking ring in the root of the eyepiece that must be rotated counter-
clockwise to loosen the eyepiece. On other cameras there is separate button
that must be screwed looser before adjusting
Adjust the diopter by first turning the (lens) focusing ring to infinity. Then turn
the zoom into extreme tele end. Aim the camera at some distant object and
turn or move the loosened eyepiece until the image is as sharp as possible.
Tighten the eyepiece locking afterwards.
If you have a focusing prism in the finder or aperture settings or any other
information marked, the following method is more accurate: Aim the camera
at a light and white area, such as a clear sky or a piece of paper that fills the
whole finder. Now look at whatever markings you have in the finder and adjust
the eyepiece until they appear as sharp as possible.
The Viewfinder