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<blockquote data-quote="Fred Kingston_RIP" data-source="post: 540178" data-attributes="member: 10742">I'll add my 2 cents... Good filters have known values with regard to f-stops. Especially ND filters... I shoot in manual modes only... So I meter the scene, and then add the appropriate exposure compensation by adjusting the aperture or the speed based on the f-stop value of the filter...Some circumstances, you want to select the speed... so you adjust the speed...an example would be waterfalls... You want sharp depth of field, but you want that creamy wispy water... select a large DOF around f16 and meter the scene using your camera's meter... add the ND filter, and reduce the speed the value of the ND filter... you might have to follow this process for very dark filters because you won't be able to meter/focus correctly with the filter attached... Polarizers and colored filters, you should be able to attach and meter thru them because they're usually only 1 or 2 stops difference... whereas a lot of dark ND filters can range from 4,6, to 10 stops...</blockquote>

[QUOTE="Fred Kingston_RIP, post: 540178, member: 10742"] I'll add my 2 cents... Good filters have known values with regard to f-stops. Especially ND filters... I shoot in manual modes only... So I meter the scene, and then add the appropriate exposure compensation by adjusting the aperture or the speed based on the f-stop value of the filter... Some circumstances, you want to select the speed... so you adjust the speed...an example would be waterfalls... You want sharp depth of field, but you want that creamy wispy water... select a large DOF around f16 and meter the scene using your camera's meter... add the ND filter, and reduce the speed the value of the ND filter... you might have to follow this process for very dark filters because you won't be able to meter/focus correctly with the filter attached... Polarizers and colored filters, you should be able to attach and meter thru them because they're usually only 1 or 2 stops difference... whereas a lot of dark ND filters can range from 4,6, to 10 stops... [/QUOTE]

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