Michael Brennan
Forum Replies Created
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” The Panasonic Varicam and HVX900 cameras are 720 “native” imagers, as distinguished from the Sony 1080 imager;”
To clarify, the Sony f900 750 f950 imagers are progressive.
However the frame is split into psf for on board recording.Take a frame grab from f900 or Varicam or film and in respect to motion capture, they are pretty much identical.
XDCAM HD and X300 cameras use what I call (!) an interlace imager with on chip processing to create progressive frame.
Mike Brennan
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Shooting DVW 970 means you get progressive unsampled 4:2:2 10 bit recording from a 12 bit AD camera head. Very nice for SD transmission and DVD.
This will look slightly softer than f900 or 750 but it will enable more grading and the result will look less plastic.Using a HD head into digibeta will be slightly better than above.
Shooting with 8 bit recorder and bumping to 10bit is usefull only if you have a use for the HD cam master later or if you want to resize the HD frame.
Distribute on WM9 then shoot HD.
Mike Brennan
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The main difference is the exposure time per frame, an ideal example is timelapse of a freeway at night where moving lights become more blurred wioth slow shutter speed. Most of the time you need a 1 second exposure to get the car lights formed into a continuous line, depends on their speed and how close cars are travelling!
Ramping effect has been done for years in post using 50i and 60i originated material you must have seen the subtle difference?
Slow shutter speed and memory cache would seem to be widespread (optional) features these days, so the ramp feature is probably detuned in the 900 to create a difference in the marketplace between it and Varicam?
Mike Brennan
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What I was getting at was that f900 and other pro HD cameras output true progressive via HDSDI outputs on camera head to a hard drive, not only Viper and Genesis.
Mike Brennan
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On paper the Panasonic wins in progressive mode and for slomo as it is likely to be higher res in these modes.
But the xdcam has more pixels so shoul dbe better in interlace mode… but uses 1/2 inch lens.
No question DVCPRO codec is better.I dont subscribe to the theory that all clients dictate what format we shoot.
We can educate so they choose the best format for the job.But this advice often flys in the face of many giving advice who can afford to own or operate only one format camera type and shape the client to the quipment they have.
Mike Brennan
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[gary adcock] “The only true progressive capture in 1080 is to a tape deck or array from cameras like genesis & viper.”
Surely all pro cameras with HDSDI output progressive, from camcorders Varicam to f900, studio cameras LDKs to HDCs.
Mike Brennan
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For a small amount of slomo most f900 users shoot 59 or 60 and deinterlace either by NLE or real time hardware.
Varicam is a little sharper than deinterlaced HDCAM. A deinterlaced SR recording from f900 should be closer.
Dont attempt a offline before you have slowed the footage down and have rock solid timecodes.
The other option now available is 1920×1080 pixel 60p recorded 10bit using HDC1500 and seperate SRW1.
Mike Brennan
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[richard ladkani] “It can only do 24p in 1080×1920”
f900 can do 30p too.
Mike Brennan
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Draw a 5×4 shape on a card.
Fill the frame with the card.
Operator menue has adjustments in the marker page.
Select Marker on.
Select Effect onAspect Mode is adjustable between preset 16:9, 15:9, 13:9 4:3 and there is also ar VAR H, and VAR V option.
Selct VAR H and adjust this until the side lines match your 5×4 card.Mike Brennan
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Hi Nick,
I shot some comparison footage for Avid using the 400 and was very impressed with it in comaprison to HDW750 for SDTV work.
There is a review of it in HD magazine.
As Steve says it is a different codec to Varicam and it maintains the 720p imager resolution.
Its 12bit AD outperforms the HDW750 10bit AD, so skin looks a little less plastic.Of course it can be sucked into a mac with ease.
Mike Brennan