Fri Aug 19, 2016 11:48 pm
No, the deal with shutter angle is, the camera adjusts the "shutter speed, 1/50th for 25fps) to match the frame rate of the camera. At 25fps 180=1/50th Sec. (2x the fps rate). So at 60fps, you would still use 180-degree shutter for "Cine film motion cadence look", which at 60fps would be a 1/120th of a second, (more of a "video" look) for computing exposure. If your subject does not have much motion, interview talking head, then you could go to the next sower setting, 220-degree to increase the exposure if needed. The shutter angle controls motion look, with 180-degree being "normal", a larger angle (220-degrees) gives more money ion blur, and a smaller angle, 90-degrees (good for fast moving things like sports or a auto race) will give less motion look.
The difference between 220, 180 and 90 degrees equals one-half stop increase or decrease in exposure, so,if you used 180-degree 25fps at f/4.0 and you changed the angle to 90-degrees, you would need to open the lens one stop to f/3.5 to keep the same exposure. Same with changing fps from 24/25 to 60fps, you need increase light to sensor by 1-stop. If you slow down the shutter with a larger angle, like 220- degrees, then you need to stop 1/2 stop to compensate the exposure, at 360-degrees, you,gain a fullstop of exposure, useful in low light.
Cheers
Last edited by
Denny Smith on Sat Aug 20, 2016 6:11 am, edited 1 time in total.
Denny Smith
SHA Productions