top sports camcorders image
Jake
My cousin has a camcorder with 70x optical zoom and it works fine.
I recently saw one that had 78x optical zoom, it was Panasonic.
Why do people say it wouldn't be possible to have 100x optical zoom?
78x optical zoom isn't that much less than 100x.
Answer
optical zoom over 20x is not very practical. megazoom is a result of using very tiny CCD imagers. for a 1/4 inch format CCD, the normal focal length is 4mm, 20x is 80mm which is 3 inches a rather reasonable size lens for a plam held camcorder. 100x would be 400mm or 15 inches, that is a lot of glass to hang in front of a 1 inch thick camera. then there is the problem of light gathering. for reasonable pictures in daylight, the lens needs a minimum iris opening of f4. the "f" factor is the ratio of focal length divided by lens diameter. so for 400mm to achieve f4 it would need to be 100mm diameter or 4 inches. But you might realize that the biggest problem is stability, to prevent blur, OIS is usable to 20x. That prevents blur but it does not control bounce or similar unintended movement, that is you will have sharp images of something that is bouncing. Here is where a tripod is needed. Television sports cameras use 40x to 50x lenses from Center field at baseball, or stadium top for football. But that camera is mounted on a $250,000 vibration supression mount, not a simple tripod. The megazoom may be something of value for still digital photos where the effective shutter speed can be increased to get a clear single frame. CCDs are getting down to 1/8th inch size with would reduce the example numbers in half. but then you have to cram the 12 elements used in a normal servo zoom (one that tracks focus) into minimum thickness of 2mm. that is why the flip cameras don't have optical zoom. and the funny thing is, all the sports people want to put "baby death" super fisheye lenses on their cameras, just the opposite of megazoom.
optical zoom over 20x is not very practical. megazoom is a result of using very tiny CCD imagers. for a 1/4 inch format CCD, the normal focal length is 4mm, 20x is 80mm which is 3 inches a rather reasonable size lens for a plam held camcorder. 100x would be 400mm or 15 inches, that is a lot of glass to hang in front of a 1 inch thick camera. then there is the problem of light gathering. for reasonable pictures in daylight, the lens needs a minimum iris opening of f4. the "f" factor is the ratio of focal length divided by lens diameter. so for 400mm to achieve f4 it would need to be 100mm diameter or 4 inches. But you might realize that the biggest problem is stability, to prevent blur, OIS is usable to 20x. That prevents blur but it does not control bounce or similar unintended movement, that is you will have sharp images of something that is bouncing. Here is where a tripod is needed. Television sports cameras use 40x to 50x lenses from Center field at baseball, or stadium top for football. But that camera is mounted on a $250,000 vibration supression mount, not a simple tripod. The megazoom may be something of value for still digital photos where the effective shutter speed can be increased to get a clear single frame. CCDs are getting down to 1/8th inch size with would reduce the example numbers in half. but then you have to cram the 12 elements used in a normal servo zoom (one that tracks focus) into minimum thickness of 2mm. that is why the flip cameras don't have optical zoom. and the funny thing is, all the sports people want to put "baby death" super fisheye lenses on their cameras, just the opposite of megazoom.
What is a good vid camera that will make good vids for youtube, and be easy to transfer to a comp for editing?
Drew
I'm looking for a good camcorder with good picture and sound quality. I know very little about the different types of video cameras (hard drive, etc.) I plan on using it to transfer and edit videos on my computer. I won't spend more than $350. A specific model would help me most, but a simple explanation about which type of camera would be best for me would be appreciated.
Answer
The Optura 600 from canon
The Optura 600 represents the flagship of Canon's 1 chip MiniDV camcorders, the king of the Optura line. Retailing at around $1100 (up approximately $400 from the Optura 60), your money might be well-spent. The 600's huge 1/2.8" CCD promises excellent video performance, a category the Opturas have traditionally faired well in. Matchbook bodies seem to be all the rage, combining portability and deed. Many matchbooks, however, present handling issues, and may annoy those expecting a professional feel to match the large price tag. We hope the Optura 600 brought its "A-game," because we dropped it in the middle of the ring to face off against the top MiniDV consumer cams of the year.
Video Performance
The Optura 600 sports an enormous 1/2.8â CCD with 3.5 effective MP. The camcorder also uses Canonâs RGB Primary Color Filter for a boost in video performance. The difference these specs makes becomes obvious when you compare it to the Optura 60. The picture appears sharper and the colors are richer. The grayscale is also much more sharply defined.
Because this is Canonâs top of the line consumer camcorder, we held it up against the top models from other manufacturers. Compared to the GR-X5, one of our top video performers this year, the colors are a shade darker, and overall you might say that the Optura 600âs spectrum is more even. The black/white contrast looks better in the JVC GR-X5, however. The colors from the Sony DCR-PC1000
The Optura 600 from canon
The Optura 600 represents the flagship of Canon's 1 chip MiniDV camcorders, the king of the Optura line. Retailing at around $1100 (up approximately $400 from the Optura 60), your money might be well-spent. The 600's huge 1/2.8" CCD promises excellent video performance, a category the Opturas have traditionally faired well in. Matchbook bodies seem to be all the rage, combining portability and deed. Many matchbooks, however, present handling issues, and may annoy those expecting a professional feel to match the large price tag. We hope the Optura 600 brought its "A-game," because we dropped it in the middle of the ring to face off against the top MiniDV consumer cams of the year.
Video Performance
The Optura 600 sports an enormous 1/2.8â CCD with 3.5 effective MP. The camcorder also uses Canonâs RGB Primary Color Filter for a boost in video performance. The difference these specs makes becomes obvious when you compare it to the Optura 60. The picture appears sharper and the colors are richer. The grayscale is also much more sharply defined.
Because this is Canonâs top of the line consumer camcorder, we held it up against the top models from other manufacturers. Compared to the GR-X5, one of our top video performers this year, the colors are a shade darker, and overall you might say that the Optura 600âs spectrum is more even. The black/white contrast looks better in the JVC GR-X5, however. The colors from the Sony DCR-PC1000
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