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| Thread ID: 61078 | 2005-08-24 04:21:00 | CCD pixel ratings | Strommer (42) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 383291 | 2005-08-24 04:21:00 | Video cameras give a CCD pixel rating such as 800k. Does this mean that it will be equivalent to a 0.8 Mp digital photo camera, if the vidcam is used in still picture mode? What is the highest CCD rating for home vidcams now on the market... 1.3 Mp ? Does a higher CCD rating make much difference (for those who have actually made comparisons; obviously there is a technical, theoretical difference.) |
Strommer (42) | ||
| 383292 | 2005-08-26 00:47:00 | After nearly 2 days and still no reply . Has this really stumped the techies here on PF1? :confused: Not even a witicism? |
Strommer (42) | ||
| 383293 | 2005-08-26 01:36:00 | It could be more complicated than first impression. Some Video cams use 3 ccds, do they quote rating of each or combine them. A Panasonic quotes 3 MP stills from 3 x 800k ccd. | PaulD (232) | ||
| 383294 | 2005-08-26 01:47:00 | Basicly yes. But the area of DV cameras and shooting stills from them is pretty confusing All the major manufacturers make claims that sound good but have no real relevance to the performance or quality of the cameras. There is so much info to sort throught to get to the guts of a particular model and the manufacturers don't make it easy with the (on the edge of misleading) blurb they provide. There are more important factors to consider than the MP though when choosing a camera such as: 1 CCD, 3 CCD, interpolation, Lens size, optical zoom, digital zoom etc. etc. I've seen a lot of cameras with a high MP count that don't take anywhere near the quality pics and video of models with a much lower MP count |
bartsdadhomer (80) | ||
| 383295 | 2005-08-26 01:49:00 | It could be more complicated than first impression. Some Video cams use 3 ccds, do they quote rating of each or combine them. A Panasonic quotes 3 MP stills from 3 x 800k ccd. Dunno how as 3 x 800 = 2400 Typical of the misleading advertising blurb, probably using interpolation to boost it to 3MP Interpolation = crap result |
bartsdadhomer (80) | ||
| 383296 | 2005-08-26 02:00:00 | Paul and Barts - thanks. Interesting. The quality of the optical lens has been an important issue for years - way back to B&W film days. It used to be Carl Zeiss and then Nikon were the best, most trusted brands, but nowadays I wonder how a person could judge which is the best lens? 3 CCDs ??? How does that work? One for each of Red Blue Green?? I have a Canon Powershot A70, 3 Mp still camera, and actually the video clips on high resolution are very clear, even on the 29 in TV. Some day, some year, I may replace it with a vidcam that can store directly on DVD - - - as long as the still pictures are of good quality. |
Strommer (42) | ||
| 383297 | 2005-08-26 02:13:00 | 3 CCDs ??? How does that work? One for each of Red Blue Green?? Exactly right 1 x CCD camcorders capture images by interpreting RGB colors with one chip 3 x CCD cameras capture image data by assigning one color to each chip, resulting in more accurate color information. |
bartsdadhomer (80) | ||
| 383298 | 2005-08-26 04:45:00 | The problem is further complicated because the camcorders do video and still . For video the CCD resolution is basically what is used by current video standards . Standard digital video is 720 x 480 pixels . High definition DV is higher (1080i for example, is 1920 x 1080 but you need an HD-capable TV to display that, or a PC monitor, of course) . So if you get a camcorder boasting 2-megapixel or even 4-megapixel resolution, that is almost certainly (with the exception of HD camcorders like Sony's HDR-HC1 ( . sonystyle . com/is-bin/INTERSHOP . enfinity/eCS/Store/en/-/USD/SY_DisplayProductInformation-Start?ProductSKU=HDRHC1&Dept=cameras&CategoryName=dcc_DICamcorders_HighDefinitionVideo" target="_blank">www . sonystyle . com) ) only the still picture resolution -- the extra resolution is unused for video . But you do get the higher resolution for still images . And 3CCD sensors don't change the video resolution . But because they capture the whole scene in each of the three colours and then combine them for the RGB image, the colour captured (and even detail captured), is theoretically better than a single CCD device . |
Biggles (121) | ||
| 383299 | 2005-08-26 09:02:00 | Thanks for the clear explanations. :thumbs: | Strommer (42) | ||
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