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nikon a12 amber filter

blue island , Jan 28, 2005; 04:03 p.m.

Hi. Can someone clarify regarding the nikon a12 amber filter. For colour this reduces colour temp ... yes? For B&W it will have a similar effect to a yellow filter? (more or less contrast?)

Many thanks in advance


Ellis Vener , Jan 28, 2005; 04:09 p.m.

it will have a very, very mild effect on contast. A12 = Wratten #81A filter = KR1.5

Michael R. Freeman , Jan 28, 2005; 06:14 p.m.

Ellis - I think you are thinking of the A2 (81A). The A12 is much stronger and is roughly equivalent to an #85 (KR-12). As to its effect on B&W film in comparison to a yellow filter, I haven't a clue.


Arnab Pratim Das , Jan 28, 2005; 06:48 p.m.

Michael is right, I use the Conversion A2 all the time with film (one on each lens as the proverbial "protector") and it has a light, though visible effect. My only one A12 is quite strong, to the extent that I take care not to use it in the late afternoons.

With digital I use neither. I used to use the A2 on my D70 but later figured I had to do manual WB corrections to crank up the color temperature most of the time. So I replaced them with L37C for digital work.

Arnab Pratim Das , Jan 28, 2005; 09:28 p.m.

To answer original question -- for BW photography even the A12 will hardly have any effect (IMHO).

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