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Blair MacDonald | all galleries >> Other Non-Astronomical Images > Rocks on the Beach
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Rocks on the Beach

Rocks on the Beach

This is an image taken well after dark. The Moon provided the illumination for this one and a half minute exposure, but it was too dim to focus so a green laser pointer was used to produce a bright dot on the rocks. The camera auto-focus was then able to lock on and achieve shark focus on the rocks.

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John Schnupp 20-Sep-2013 04:28
I had never thought to use a green laser pointer to assist with auto focus. I will have to give that a try.

John Schnupp, N3CNL
'95 XLH 1200 +96,200 (bent pushrods)
Georgia, VT
44.7675°N, 73.1592°W
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