Slow motion work
Posted 20 January 2011 - 11:20 AM
Posted 20 January 2011 - 12:14 PM
A lot depends on how slow you're going. If you're just doing something simple like 48 fps, for example, you're really only sacrificing one stop of light which is quite easy to compensate for. It's not till you start to get up to the few 100s of FPS that things get more interesting.
Posted 20 January 2011 - 05:36 PM
In regard to Shutter. You dont just crank it to whatever. You still keep a 180 degree shutter normally. So if you were shooting 1/48th at 24fps and went to 48fps then you would go 1/96th which would keep the motion and blur the same as 24fps etc. Aperture is opened wider to make the light travel faster through the lens and lastly more light is added to the scene to help. As for exterior it would be more difficult just because of the ability to control light but on a normal sunny day you would find your self closing down the apertrue or using nd's to keep shallow dof if thats your goal anyway meaning there is plenty of light to work with to begin with.
Hey, I was wondering on the majority of slow-motion camera work, what is the most common thing to do for light loss? I know there is shutter speed changes in camera as well as aperture compensation. But if you do a shutter change in camera will that affect the look of the image? Is the common thing to bring in more light to compensate? ( although that could be hard for exterior say). Thank you
Posted 20 January 2011 - 06:59 PM
So you don't have much choice other than to increase the light level or the ASA / sensitivity to compensate for the light loss when increasing the frame rate and keeping to a 180 degree shutter.