Barry Green
Forum Replies Created
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Barry Green
August 18, 2005 at 8:29 am in reply to: 24p sampled at 24fps? I guess the 200 will be the same…The answer is: the camera shoots 24 individual, discrete, progressive frames per second, each one evenly spaced 1/24 of a second apart. Exactly the way film does.
There is no conversion going on. There’s no bogus “CineFrame 24” type of action here — the CCD is a variable-scanning-rate CCD. It can scan at 24Hz, 30Hz, or 60Hz.
When recording, the camera has to comply with DV’s NTSC 60-field standard. So 24 progressive frames get written to tape using 2:3 pulldown, exactly the same way film does it. 30p gets written to tape using progressive-segmented frame technology, each frame is split into even and odd lines and written to two fields, the same way the Sony CineAlta does it.
The 24p frame rate of the DVX delivers motion that is indistinguishable from film shot at 24fps. If you transfer film to video and split-screen it against DVX footage on video, you’ll see that the motion is absolutely identical between the two.
The HVX uses the same technique for 1080/24p. For 720/24p it doesn’t even have to do the pulldown — it writes 24 frames directly to the P2 card. The file on the card is a native 24p file, no duplicate frames and no pulldown.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
Barry Green
August 18, 2005 at 8:20 am in reply to: My only guess is that Panasonic is counting on the cost of memory dropping drastically very soon?[Jan Crittenden Livingston] ” Keep in mind that today many of what were DAT type recorders record on Flash Memory now. Digital Audio started before Digital Video. And we can just look at how technology advances through the industry, memory recording is on its way, and will be the standard in years to come.”
Actually, that hasn’t just happened to DAT — it happens to all recording technologies. Looking back through the years, it seems like all recording technologies follow the same path: first it’s tape, then disc, then solid state. Tape always gets ditched and replaced, either by disc or solid state. Solid state replaces discs, but discs don’t replace solid state, and tape never replaces either. It’s always tape first, then disc, then solid state, although in some cases disc gets skipped and they go straight to solid state.
Computers: we used to load programs off of cassette tapes. Tape was obsoleted by disk drives, then hard disks, then optical disks. Solid State is now becoming more common — JumpDrives, etc.
Audio: first there was reel-to-reel, which was obsoleted by LP records (a form of disc). Then there was cassette tape, which was completely obsoleted by disc technologies: CD, minidisc, hard disk (in the iPod). And solid-state is hard at work in MP3 players too.
Professional audio: First there was Nagra tape, then DAT tape. Now both are basically obsolete, replaced (once again) by disk and solid state.
Home answering machines: started out tape, tape is now obsolete, most current models are solid-state.
Voice memo recorders: started out tape (Dictaphone, etc) — obsolete, replaced with solid state.
Home video: started out with tape (as always, tape is always the first generation). VHS tape is now basically obsolete (as always; tape always gets made obsolete), having been replaced almost entirely by discs — DVD for rental, hard-disk PVR or DVD-recorders for recording. Some stores aren’t even carrying movies on VHS tapes for rental or sale anymore.
Camcorders and pro video: tape was first, as always. But tape is under a severe onslaught from discs (FireStore, XDCAM, even EditCam and DVD-recording cameras) and solid state (P2, JVC’s little SD memory-card camera lineup). And for HD delivery, tape is already obsolete — high-def tape isn’t even an option to consider for distribution. Nobody’s going to distribute on HDV tape or D-VHS, they’ll use blu-ray or HD-DVD disc right at the outset. Disc will replace tape as a distribution medium before tape even has a chance to try.
The handwriting is all over that wall: tape is dead. It may not know it, it may go around chanting “I’m not dead yet; I don’t want to go on the cart,” etc., but tape’s days are over. Solid state and disc offer just too many advantages. History repeats, and it will repeat again, and we who shoot video for a living will cheer the day.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
Seems likely. The DVX100 can play back DVCAM tapes, so I’d suspect the HVX can as well, although it remains to be confirmed.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
82mm.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
Panasonic announced a 2/3″ P2 DVCPRO-HD camera during their NAB demo, but I don’t believe they specifically said “Varicam” on it. So that could be the VariCam successor, or maybe it’s a different camera? Either way, I don’t think any details at all were announced other than to say “2/3”, “P2”, “DVCPRO-HD”, and “2006”.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
The SPX is about $7000 less than the SDX. But then you should also figure in that you don’t need a DVCPRO50 deck either, so that saves another $7000. So you’re left with $14,000 in savings — even if you bought 5 8-gig cards at $2000 each, you’d still come out $4000 less expensive than the SDX.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
The new camera has native 16:9 chips in it, so yes it will produce proper anamorphic widescreen video in both SD and HD. Not optically anamorphic, but widescreen by the design of the chips (like all 16:9-native cameras do).
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
In Squeeze mode, the image is squeezed in the viewfinder on the 100A, yes. There are several ways around that, but all involve using additional equipment — Century Optics makes a viewfinder de-squeezer and also an LCD magnifier-de-squeezer, and you can also use an external pro 16:9-switchable monitor or even a shoe-mounted 16:9 LCD; you can also use DV Rack to unsqueeze the image. But if you’re relying on the camera alone, yes the image is squeezed in the VF.
In editing the NLE will automatically unsqueeze it for viewing. What gets recorded on tape is a 16:9-compliant signal, so the editor will handle it just like it would handle footage from a DSR450 or DSR570 or SDX900 or any other camera that generates 16:9 footage.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
The DVX’s 16:9 mode (called “squeeze mode”) can do a quite excellent job. If you’re shooting progressive-scan (24p or 30p) you’ll get as much resolution out of it as you would from a “native 16:9” interlaced camera like the Sony FX1 (when it’s in DV mode).
The only camera in this price range that has higher-resolution 16:9 than the DVX would be the XL2 when the XL2 is in progressive/NORM mode.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a) -
Look on the Panasonic website for an authorized dealer reseller, and make sure that whichever seller you choose is actually an authorized repair center FOR THE DVX. You don’t want to take your camera to a consumer-authorized repair center; make sure it’s a center that understands and is authorized to repair the DVX line.
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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a)