Long Exposure Question

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

clockface wrote:

clockface wrote:

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.

Because you don't learn anything doing it that way.

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Jim Radcliffe
The ability to 'see' the shot is more important than the gear used to capture it.

So with a 3 stop ND filter you leave it off, let the camera meter the scene, switch to manual, put the filter on, adjust the settings by 3,stops, and then take the pic. Learned a lot?

I have learned the following:

1. Quite often the strenght of the filter is not exactly as reported by the manufacturer. For example, the Lee big Stopper can vary between 9.5 - 10 stops, or thereabouts.

2. I think it is much more useful as to progresso your knowledge to learn so you can make decisions yourself. I prefer to blame myself for mistakes, than blame the camera...

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I concede that a 10 stop requires calculation and experimentation. My initial comments where aimed at more moderate ND filter that restrict by 3 stops. My 37 years of taking photos has taught me to sometimes let the camera do the thinking, and somtimes to think for myself.

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