Sharp AD-USB1 Manuel d'utilisateur télécharger pdf (Page 5)

Handbook for the SXVF-H16 Issue 1 August 2006

2) Create a ‘Pin hole’ lens by sticking a sheet of aluminium baking foil over the end

of the 1.25” 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.

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Sharp AD-USB1 Manuel d'utilisateur Page 5