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Recreating Late Afternoon Light.
michael c barlas posted a topic in LightingHey everybody, My name is Mike, I am an Electric and I will be gaffing for a short film. I have to recreate late afternoon light to shine through a window. My question is do I have a strong enough light source? My main light source is an Arri Tungsten 5k. The DP wants it about 20 or so feet away from the window. We are on the second story so the light will be on a stand about 16 feet high. The DP wants afternoon light (4300k) to shine through the bathroom window. So I will gel the 5k on a 4x4 frame with 1/2 CTB (4600K). He also wants some New Hampshire Frost on it. Using Arris Photometric Calculator I calculated the Arri T5 5k light source at: 21ft. Middle flood to give me a 3914 Lux. Aperture at F13.8 ASA 800 30fps Wikepedia says Lux for a sunset/sunrise to be 400,1000 for an over cast day, 10 000 for full daylight. My 3914 Lux does not take into account my 1/2 CTB gel and Hamphire Frost. So ultimately I am asking where my light is placed right now 20ft away though 1/2CTB and Hampshire Frost, do I have enough light or Lux to recreate late afternoon sun? Yes I can lower the aperture on the camera from the 13.8. Or should I rent a 10k. Keep in mind I only have one Grip to help me. Thanks a lot for any help in advance, it is much appreciated. Cheers, Mike