I used self timer, and did not bother with mirror lockup.

来源: pieq314 于 2007-11-19 12:01:14 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (108 bytes)

If the mirror caused any vibration, it would last less than a sec, which is a non-issue for a 30" exposure.

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