CarrieSexy |
04-15-2011 07:30 AM |
Quote:
You haven't watched a digital film? I'm shocked!
The 'exposure' is far too short to get a blur - any blurring would be down to the projector and even the analogue ones have a very short duration and won't produce a speed blur.
What you do get is a series of individual images.
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Yes, I have watched a digital film. I also film, direct and edit them as Lenny said.
Exposure (iris), shutter speed, frame rate, focus and pretty much any other technique involved with capturing an image is no different on a digital cinema camera compared to a film based one. They even use the same lenses. Digital simply refers to how the image is received and stored. Film exposes the image coming from the lens onto a piece of film as a negative, and digital does it into a CMOS or CCD chip that translates it into data.
Here are some examples from a film I recently shot, digitally:
http://www.mattyler.com.au/Projects/TE/TE_10.jpg
http://www.mattyler.com.au/Projects/TE/TE_12.jpg
http://www.mattyler.com.au/Projects/TE/TE_16.jpg
...they were shot on a Panasonic HPX172, which is a digital film camera, at 25fps with a shutter speed of 1/50 (thanks Serial Carpens for clarifying the shutter theory). As you can see there is indeed plenty of motion blur captured in those stills.
So essentially if you have any camera (digital or film) capturing a fast moving image and your frame rate is 24fps, regardless of what format you are recording if the shutter for a single frame stays open long enough to capture a blur in the motion of the subject it will be captured by the camera. It has nothing to do with exposure, and I don't even know where you got the word 'short' from?
The only time you would refer to 'exposure' and 'short' in the same sentence would be to explain how a more open iris (greater exposure) helps to achieve a shorter (narrower) depth of field when separating foreground from background in a shallow focus or focus pull.
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