Q. Hi, I am searching for good videocamera that got 1080p and high-speed so there won't be any motionblur. So I was looking at the HR-115CX and wondering if it is any good? come with more suggestions if you know wanother good one. (It HAS to be atleast 60FPS so I can make slow motion ffects)
Answer
you won't like what i have to say, but it is based on experience.
first motion blur has nothing to do with the frame rate. almost every CCD video camera ever made has independent shutter speed ranging from 1/100 to 1/1000 second. the only limitation on shutter speed is available light, but normal daylight will allow for a pretty fast shutter.
second is the fact that ALL digital video except for miniDV uses "Group of Frames" architecture. Only movie cameras and miniDV take video as successive frames, making accurate slo motion analysis possible. The most common HD codec, AVCHD uses a fixed GOF of eight. That means an effective frame rate of 4 FPS, the missing frames are guessed at on playback. The interpolation process can be very inaccurate with action sports. i think that is the source of what you are calling motion blur. Going to 60 FPS won't help, you will still have 7 missing frames for each actual one.
third is datarate. the more data, the better the quality. miniDV is 25 Mbps, your camera is 6 Mbps, which wins? if you must go with HD, then HDV is the best solution. It has high datarate and MPEG2 codec which allows for variable GOF to keep up with action.
These are the most essential reasons that professional action sports is almost universally done with miniDV format camcorders.
you won't like what i have to say, but it is based on experience.
first motion blur has nothing to do with the frame rate. almost every CCD video camera ever made has independent shutter speed ranging from 1/100 to 1/1000 second. the only limitation on shutter speed is available light, but normal daylight will allow for a pretty fast shutter.
second is the fact that ALL digital video except for miniDV uses "Group of Frames" architecture. Only movie cameras and miniDV take video as successive frames, making accurate slo motion analysis possible. The most common HD codec, AVCHD uses a fixed GOF of eight. That means an effective frame rate of 4 FPS, the missing frames are guessed at on playback. The interpolation process can be very inaccurate with action sports. i think that is the source of what you are calling motion blur. Going to 60 FPS won't help, you will still have 7 missing frames for each actual one.
third is datarate. the more data, the better the quality. miniDV is 25 Mbps, your camera is 6 Mbps, which wins? if you must go with HD, then HDV is the best solution. It has high datarate and MPEG2 codec which allows for variable GOF to keep up with action.
These are the most essential reasons that professional action sports is almost universally done with miniDV format camcorders.
Powered by Yahoo! Answers
No comments:
Post a Comment