The Exposure Value is equal to one tenth the airspeed velocity of an unladen swallow....What is the exposure for predawn Hawaiian lava flow?
Why not simply take a reading of the lava with the spotmeter, and expose with +1EV exposure compensation of the reading, as a start; then 'for insurance' bracket the shot +/- 0.6EV, for a total of three shots?!What is the Kodak Portra 400 exposure for predawn Hawaiian lava flow? I will be at an offshore board. Any suggestions? The light reading without a light meter will be overexposed and with a spot meter will put the flowing lava as 18% gray.
Why not simply take a reading of the lava with the spotmeter, and expose with +1EV exposure compensation of the reading, as a start; then 'for insurance' bracket the shot +/- 0.6EV, for a total of three shots?!
Chimp that first series to determine which of the three looks best for your taste, then take other shots to match 'the best'!
The real challenge is how to get the processing service to PRINT at the correct density and to not 'undo' your exposure compensated neg!!!
My Nikons have chimpin' capability since I only shoot film. I can use the Nikons with the zoom lens and choose one detector as a spot meter. Since it will be way before dawn, an incident meter will not be useful. Also the cool lava is very dark black. So +1EV may be a good place to start bracketing, but bracketing with a 36 exposure roll would only yeild about twelve shots, hence the question.
If you have a long enough lens your Nikon will do a truly fine job of spot metering. Zone metering principles and placement ideas will work fine.My Nikons have chimpin' capability since I only shoot film. I can use the Nikons with the zoom lens and choose one detector as a spot meter. Since it will be way before dawn, an incident meter will not be useful. Also the cool lava is very dark black. So +1EV may be a good place to start bracketing, but bracketing with a 36 exposure roll would only yeild about twelve shots, hence the question.
Ah, European or African swallow?The Exposure Value is equal to one tenth the airspeed velocity of an unladen swallow....
Since you're metering a luminous subject (flowing lava), I'd probably try to get a spot meter reading and then overexpose by 1 or 2 stops. You probably want to portray the flow as accurately as possible, regardless of the ambient light or surrounding conditions, which will probably be very dark. This is where an incident meter or a wider reflective meter probably won't be of much use, as there won't be much ambient light and any cooled lava surrounding the flow will be almost black. There may be some online resources for subjects like this, but it sounds like it could be a challenging situation. Good Luck!
matrix metering and done!What is the Kodak Portra 400 exposure for predawn Hawaiian lava flow? I will be at an offshore board. Any suggestions? The light reading without a light meter will be overexposed and with a spot meter will put the flowing lava as 18% gray.
How can you make an incident reading of glowing lava, and from a distance to boot?I would take an incidental meter reading and bracket my exposures at one stop increments and since it's negative film, that should produce at least a few usable negatives.
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