First Moon shot No Crop or PP 1000mm BC

Started Feb 23, 2013 | Discussions thread
Richard66
Forum MemberPosts: 56
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Re: My trial with 5N and Tamron SP adaptall-2 500mm f/8.0 mirror (55BB) alone
In reply to LTZ470, Feb 26, 2013

I'm still learning photo terminolgy, would someone please explain what this shutter speed means 100/12499.

Thanks

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