Nishant Gala Posted March 19, 2011 Share Posted March 19, 2011 HI, i would be shooting on Canon 5D MK II, for an ad film... and i would be lighting it with tungsten source, if i am using my incident light meter for my lighting ratio... whats the ISO Sensitivity i should keep it on my Light Meter and what ISO rating should i keep it on Camera while shooting Video. how do i rate? can anyone tell me? e.g - if i keep ISO on camera at 400ASA then to get my lighting ratio whats the ISO Sensitivity i should keep it on Light meter? or if its 100 ASA on camera then what should i keep it on light meter? Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted March 19, 2011 Premium Member Share Posted March 19, 2011 Match meter to camera. I'd shoot a grey-card and meter it at, say 640ASA, or what-have-you and expose it "properly" on the 5D, this should let you know if you need to adjust your ASA on the meter a bit to get them to agree on middle grey. Link to comment Share on other sites More sharing options...
Nishant Gala Posted March 20, 2011 Author Share Posted March 20, 2011 Thanks Adrian... for your information so u telling i should keep the incident on 640ASA and the ON camera ISO to be 100 ASA? but would every camera differ in its sensitivity... have anybody rated the camera Sensitivity? Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted March 20, 2011 Premium Member Share Posted March 20, 2011 You mis-undestand. You would rate the meter and the camera the same for the test, so for example, both at 640. Then, if there is any devation as to the F stop the meter tells you and the F stop the camera tells you a 18% grey card should be exposed for then you would adjust your meter accordingly. You should "pick" your asa on the camera as you do a film stock, with attention to highlight and lowlight clip points as well as noise present in the image, then shoot a test with your meter set to whatever ASA you have your camera set for, filming an 18% middle gray card with both the camera, and spotting it with a meter. If the camera is, say, F4 and the meter reads a F5.6 you'd want to drop your meter down to 320 to get them to agree. Does that make sense? Link to comment Share on other sites More sharing options...
Nishant Gala Posted March 20, 2011 Author Share Posted March 20, 2011 Thanks Adrian, that makes perfect sense to me..... and i am crystal Clear... thanks for your advice. I appreciate your time and effort to explain my query. Thanks for your patience tooo.... have a great day. Link to comment Share on other sites More sharing options...
Premium Member Adrian Sierkowski Posted March 20, 2011 Premium Member Share Posted March 20, 2011 My pleasure. Link to comment Share on other sites More sharing options...
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