Another question - because I'm in a questioning mood today.

Blue_In_AK

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Mon Jun-19-06 01:40 PM
Original message

Another question - because I'm in a questioning mood today.

:) When we were on our hike, I used the polarizing filter on my lenses because it was pretty hazy that day. I would turn it until it looked like I wanted and then shoot according to what the meter in the camera said, but many of the pictures turned out on the dark side (fixable with Paint Shop, but I was hoping to avoid that). Do you need to increase the exposure time or something when you're using this filter? Kick it up a notch or two?

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JeffR

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Mon Jun-19-06 02:28 PM
Response to Original message

1. The polarizing filter acts as a variable neutral density filter

Which can cut down the light by up to 2 stops. I think but I'm not certain that the variability is contingent on the rotation of the filter. That might account for only some of the shots being darker than you intended.

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Blue_In_AK

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Mon Jun-19-06 02:29 PM
Response to Reply #1

2. It's all trial and error, isn't it?

Maybe one day I'll get all this stuff right.

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JeffR

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Mon Jun-19-06 02:35 PM
Response to Reply #2

3. You could try multiple versions of the same shot

With the filter turned to different degrees. That might at least give you a ballpark idea of how much an exposure will be affected by the filter.

At least it's possible to compensate for problems like this in the digital darkroom, thank God.

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