Long Exposure Question

Started Apr 24, 2014 | Discussions thread
clockface Regular Member • Posts: 171
Re: Long Exposure Question

I've seen many photos that folks have taken that required a long exposure to achieve.  Sometimes ND filters were used and sometimes simply shooting at night or very low light conditions.  How does one know how to determine the exposure when shooting in these scenarios?  I realize when using an ND filter I can calculate the exposure based on normal (i.e. without the filter) then factor in the filter, but what about at night.  Is it trial and error or are there some basic rules?  Thanks

Why not put on the filter from the start and let the camera sort the exposure? I thought most cameras these days meter through the lens.

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