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Solar Filter for DSLR Camera
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28-04-2014, 11:32 AM
Merlin66
(Ken)
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Join Date: Oct 2005
Location: Junortoun Vic
Posts: 8,927
Matt,
the size of the solar disk is close to 1/100 the focal length - the image with the 250mm will only be 2.4mm diameter.....
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