I read this from Lee Filter's website:
"Take a reading using average centre weighted metering by viewing the foreground which you wish to be correctly exposed, and this will be your base exposure.
The camera should be set to manual.
Repeat the process with the sky and note the exposure difference between the two readings. Select a Neutral Density Graduated Filter that will correct the exposure difference to approximately 1 stop. For example, if the sky is 3 stops brighter than the ground, add a 0.6 ND (2 stop) grad filter to the sky only. Compose your image through the lens and position
the filter by viewing through the lens. Stopping the lens down using depth of field preview makes the grad transition line easier to see. Expose the image using the base exposure measured from the area not covered by the filter. With practice, this method can give very acceptable results, with a high rate of success."
Due to n00bness, I don't quite understand the technique. Does it mean I first get my base exposure (foreground) readings, then meter the background and see how many stops difference there is btw base and background?
i.e. base exposure = 1/125, f/5.6, ISO100 (correctly exposed)
background exposure = 1/15, f/5.6, ISO100 (correctly exposed)
Diff = 3 stop on shutter speed, therefore use 0.6ND to get 1 stop difference btw base and background
Correct?
"Take a reading using average centre weighted metering by viewing the foreground which you wish to be correctly exposed, and this will be your base exposure.
The camera should be set to manual.
Repeat the process with the sky and note the exposure difference between the two readings. Select a Neutral Density Graduated Filter that will correct the exposure difference to approximately 1 stop. For example, if the sky is 3 stops brighter than the ground, add a 0.6 ND (2 stop) grad filter to the sky only. Compose your image through the lens and position
the filter by viewing through the lens. Stopping the lens down using depth of field preview makes the grad transition line easier to see. Expose the image using the base exposure measured from the area not covered by the filter. With practice, this method can give very acceptable results, with a high rate of success."
Due to n00bness, I don't quite understand the technique. Does it mean I first get my base exposure (foreground) readings, then meter the background and see how many stops difference there is btw base and background?
i.e. base exposure = 1/125, f/5.6, ISO100 (correctly exposed)
background exposure = 1/15, f/5.6, ISO100 (correctly exposed)
Diff = 3 stop on shutter speed, therefore use 0.6ND to get 1 stop difference btw base and background
Correct?