Joseph George
June 23rd, 2003, 02:08 PM
.Just got back home for a short time; tried HD1 and compared a little to PDX10 and PD150 in a store. HD1 has a lot worse LCD and the viewfinder looks like something out of Toys R Us' BarbieCorder, if there is such a thing. The panning is a problem. The only use for this thing would be lowest end film production, with distribution through Landmark theaters whose projectors accept 30p. You'll need to use ND filters, trying to keep the shutter speed from going up and, most of the time, you should keep the lens at F1.8 -- becomes F1.9 in telephoto. This will give you somewhat acceptable DOF, and probably softer image.
Comparisons:
CineAlta Bit rate is about 135 Mbps@30p and 110 Mbs@24p, DV based compression codex; 1920x1280 pixels. Approx 3:1:1 but less compressed overall, including chroma, than Varicam because of a lot higher bit rate. Looks worse than 35 mm film, although appears as sharp. 60' projection looks fine. To get the same sharpness when viewing from the same distance, I'll include equivalent screen sizes for the other formats.
Varicam. 50 Mbps@30p, 40@24p. DV based compression codex. 1280x720 pixels. 4:2:2. 40' screen, same overall picture quality as CineAlta
Panasonic new #900 camcorder, 50 Mbps, 4:2:2, DVCPRO50, less compressed than Varicam. 720x480 CCD chipset, 16:9, 22' screen; should have better colors than Varicam or CineAlta. Of course someone will claim that it looks sharp enough at 44' -- but only as sharp as CineAlta @120', which is not sharp.
HD10 19 Mbps@30p, MPEG2, poor quality MPEG2 processors, 960x659 effective pixels, 4:2:0. Screen size 33' but considering all other factors, including lens quality, color space, etc., the effective screen size would be about 22' with poor colors, poor panning look, etc. when compared to the more expensive camcorders.
DVX100 25 Mbps, DV codex, 720x480. New Century Optix adapter allows good 16x9 quality. 22' in progressive bode, but effective size would be about 15' with quality approaching the expensive camcorders, only the max. screen size would be smaller.
PDX10, 16:9 chip, DV. About 10' effective
PD150, GL2, 4:3, DV. About 10' effective with anamorphic adapter
The HD10 footage converted to DV will look poor overall compared to PDX10, PD150 and GL2, so again the only application for the JVC would be lowest end cinema production, which will be slow and with serious limitations because of the camera deficiencies. Anyway, the Panasonic #900 costs $25K w/o lens, and the JVC will produce same size images, so it is a super bargain in that respect.
I believe that future MPEG2 HD camcorders will be able to produce image quality similar to Varicam.
JVC not only was not capable of producing a quality unit because of the poor quality MPEG2 processors, IMHO they deliberately limited the features so the HD10 does not compete with Matsushita's pro cameras. Matsushita sells their cameras under Panasonic name and owns 52% of JVC.
DVX too had too many limits built-in so it does not compete, IMHO, with expensive cameras. The sound and picture synchronization in some modes is up to 3-4 fields off. It is perfect on a lot older PD150, and fixing this problem (delaying sound to achieve lip synchronization) would cost Panasonic less than a dollar. DVX does not auto focus and does not have gain up in progressive (3 lux changes to 24 lux in progressive). This would cost Matsushita another couple dollars to fix. Even on the a lot less expensive PDX10 Sony uses B/W viewfinder and special pixel arrangement on LCD to guarantee superb horizontal resolution -- equal to or better than the format -- for accurate focusing. DVX does not have any of this. The LCD has nearly 2.5x higher horizontal resolutuin than on DVX and the viewfinder resolution is nearly 50% higher.
Comparisons:
CineAlta Bit rate is about 135 Mbps@30p and 110 Mbs@24p, DV based compression codex; 1920x1280 pixels. Approx 3:1:1 but less compressed overall, including chroma, than Varicam because of a lot higher bit rate. Looks worse than 35 mm film, although appears as sharp. 60' projection looks fine. To get the same sharpness when viewing from the same distance, I'll include equivalent screen sizes for the other formats.
Varicam. 50 Mbps@30p, 40@24p. DV based compression codex. 1280x720 pixels. 4:2:2. 40' screen, same overall picture quality as CineAlta
Panasonic new #900 camcorder, 50 Mbps, 4:2:2, DVCPRO50, less compressed than Varicam. 720x480 CCD chipset, 16:9, 22' screen; should have better colors than Varicam or CineAlta. Of course someone will claim that it looks sharp enough at 44' -- but only as sharp as CineAlta @120', which is not sharp.
HD10 19 Mbps@30p, MPEG2, poor quality MPEG2 processors, 960x659 effective pixels, 4:2:0. Screen size 33' but considering all other factors, including lens quality, color space, etc., the effective screen size would be about 22' with poor colors, poor panning look, etc. when compared to the more expensive camcorders.
DVX100 25 Mbps, DV codex, 720x480. New Century Optix adapter allows good 16x9 quality. 22' in progressive bode, but effective size would be about 15' with quality approaching the expensive camcorders, only the max. screen size would be smaller.
PDX10, 16:9 chip, DV. About 10' effective
PD150, GL2, 4:3, DV. About 10' effective with anamorphic adapter
The HD10 footage converted to DV will look poor overall compared to PDX10, PD150 and GL2, so again the only application for the JVC would be lowest end cinema production, which will be slow and with serious limitations because of the camera deficiencies. Anyway, the Panasonic #900 costs $25K w/o lens, and the JVC will produce same size images, so it is a super bargain in that respect.
I believe that future MPEG2 HD camcorders will be able to produce image quality similar to Varicam.
JVC not only was not capable of producing a quality unit because of the poor quality MPEG2 processors, IMHO they deliberately limited the features so the HD10 does not compete with Matsushita's pro cameras. Matsushita sells their cameras under Panasonic name and owns 52% of JVC.
DVX too had too many limits built-in so it does not compete, IMHO, with expensive cameras. The sound and picture synchronization in some modes is up to 3-4 fields off. It is perfect on a lot older PD150, and fixing this problem (delaying sound to achieve lip synchronization) would cost Panasonic less than a dollar. DVX does not auto focus and does not have gain up in progressive (3 lux changes to 24 lux in progressive). This would cost Matsushita another couple dollars to fix. Even on the a lot less expensive PDX10 Sony uses B/W viewfinder and special pixel arrangement on LCD to guarantee superb horizontal resolution -- equal to or better than the format -- for accurate focusing. DVX does not have any of this. The LCD has nearly 2.5x higher horizontal resolutuin than on DVX and the viewfinder resolution is nearly 50% higher.