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Aerial Footage interlace 50i or 25,50p
Posted by Tom Sojer on March 6, 2008 at 2:39 pmHello
I need to shoot some aerial footage.I have XDCAM HD and XDCAM EX.
What is the better option for stabilize the footage?To shoot in interlace or progressive mode?
I’m using FC smoothcam to stabilize .Is there any other better software option to stabilize.
Thanks a lot!Sorry, my english is poor 🙁
Alan Lacey replied 18 years, 2 months ago 4 Members · 4 Replies -
4 Replies
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Alan Lacey
March 6, 2008 at 7:04 pmGo for the XDcam HD. I’ve seen bad examples of the rolling shutter of the EX when used for aerial work.
Alan
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Michael Gissing
March 6, 2008 at 10:12 pmInterlaced will give your more motion information.
However, the real issue would be to stabilise in the camera, not later. If an expensive mount is not affordable, at least try the baby steadycam devices or an image stabilising lens.
Post stabilising is a compromise.
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Petteri Evilampi
March 7, 2008 at 8:24 amUse XDCAM-EX, it´s smaler so it´s easier to operate in tight aeroplane/helicopter. Use EX well-working in-built optical imagestabilisator. Use 50i or even better 60i mode to get maximum motion information. Use 1/250 second shutterspeed. If using 60i use Cinematools to chance framerate to 50i, result is slichtly slo-motioned but hey, it´s aerial so it does only good foor it. Let the FCP smoothcam filter do the rest and enjoy INCREDIBLE results!
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Alan Lacey
March 7, 2008 at 9:50 amTom,
How many bites of the cherry are you allowed with this one? Do some serious research if you can’t afford a reshoot.
I’ve done no aerial stuff, but do have both a PDW350 and an EX1. I dearly love them both but it’s ‘horses for courses’ and I’ve seen examples of uncorrectable aerial footage shot by the EX1.
My understanding is:
They are unstabilizable because the rolling shutter of the EX1 results in intraframe errors that cannot be removed by stabilization software.
The ccd of the 350 has a global shutter resulting in clean stills (when in progressive mode), whereas the cmos of the EX1 scans for each frame and results in single frames that are scan exposed over the duration of the shutter angle. Even when used interlace these principles apply.
Alan
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