Handbook for the TRIUS PRO-694C Issue 1 September 2020
7
2)
Create a ‘Pin hole’ lens by sticking a sheet of aluminium baking foil over the end
of the adaptor and pricking its centre with a small pin.
If you use a normal lens, then stop it down to the smallest aperture number possible,
(usually F22), as this will minimise focus problems and keep the light level
reasonable for daytime testing. The pin hole needs no such adjustments and will
work immediately, although somewhat fuzzily!
Point the lens or pinhole towards a well-lit and clearly defined object some
distance away. Now enter the ‘Exposure’ menu in the software, set an exposure time
of 0.1 seconds, then press ‘Start Exposure’.
