Paul Tackett Posted January 29, 2018 Share Posted January 29, 2018 Hello I'm lighting for 1000 fps. In the equation I originally compensated for shutter speed but I believe the following is now correct using shutter angle if you could please help if you know. I used the equation: 100asa at 180degree shutter, 24fps = 100fc at 2.8 For high speed I got: 800iso, 180degree, 998.4fps = 520fc at 2.8 Do I need to compensate for shutter or is this correct? Thank you Link to comment Share on other sites More sharing options...
Paul Tackett Posted January 29, 2018 Author Share Posted January 29, 2018 With this in mind a 12k Big EyeSolorspot at full spot at 20 is 5900fc & 950fc full flood. Factor in diffusion cutting at least by half I'm thinking I could probably do medium spot and have exposure with one unit on the back edge Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted January 29, 2018 Premium Member Share Posted January 29, 2018 1000 fps is something like a 5+ stop loss compared to 24 fps, and going from 100 ISO to 800 ISO is a 3-stop gain, so you need another 2-stops of exposure, so a bit more than 400 fc instead of 100 fc? So your 520 fc might be right, off the top of my head... Link to comment Share on other sites More sharing options...
Paul Tackett Posted January 30, 2018 Author Share Posted January 30, 2018 I appreciate it, thank you David for all your help. Link to comment Share on other sites More sharing options...
Paul Tackett Posted January 30, 2018 Author Share Posted January 30, 2018 Another question regarding this. Can a skypanel with the 3.0 update shoot flicker free at 1000 fps? Considering using a couple s60's and getting more top down light. Link to comment Share on other sites More sharing options...
Premium Member David Mullen ASC Posted January 30, 2018 Premium Member Share Posted January 30, 2018 http://www.arri.com/news/news/skypanel-firmware-30-brings-new-features/ Looks like youll be fine. Dont know what the speed limitation was before. An older post suggests that the pre-3.0 upgrade was flicker-free at 2400 fps. Link to comment Share on other sites More sharing options...
Paul Tackett Posted January 30, 2018 Author Share Posted January 30, 2018 Thank you David. Thats pretty high, great to know! Link to comment Share on other sites More sharing options...
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