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#1
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I wish the frame rates were different for my equipment. Using my Pioneer videodisc player as a source and my Sony DCR-TRV310 camcorder the black bar stays in one place making it look like a defect. It's amazing that the frame rates could be so close in frequency.
Maybe I should try my DVD player. The camcorder has a slow shutter mode, but it makes it difficult to turn the brightness down low enough and the motion ends up being a bit jerky. It does eliminate the bar though. John |
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#2
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Drifting a bit off topic, I'm having problems with the select/push wheel on the camcorder so I thought I'd order the service manual to find out how to get to it.
The "condensed" manual is a stack of schematics and literature 3/4" thick thick and 8-1/2 x 11". ![]() I'm glad there's nothing serious wrong with it. John |
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#3
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Quote:
Last edited by jedo1507r; 04-06-2010 at 08:50 PM. |
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#4
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All my other functions work fine. I suspect the wheel isn't soldered well to the flex circuit. I'm waiting to get my reading glasses before I work on it. John |
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#5
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When I'm using my Nikon Coolpix S560, I'll adjust the brightness until the viewfinder looks OK. Usually the brightness is below the normal setting.
I'll use the exposure control on my Sony D8 camcorder, but I've found the better pictures are from the Coolpix. Much easier to get the video to the PC as well. |
| Audiokarma |
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#6
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What happens is that the dots start to fade a bit before the gun comes by for the next sweep; hence the black line staying in the same spot if the rates are matched). If they're off, the bar is all over the place, and thus you see the screen flicker or the black bar "crawl" No matter your camera's frame rate, it will still catch the black bar somewhere on screen, because the first bright dot and the last faded one will remain a constant distance apart. If you have a longer exposure (darker light, lower shutter speed) , the camera will take a longer picture and the gun will make more than one pass, illuminating the darker dots twice in the same exposure, reducing the black bar effect. The trick is to time the exposure at the right speed... but it can be done. |
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#7
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Longer exposure is the key.
Funny how sensitive the camera is, I generally have to turn the brightness down to the point that it would be unwatchable with the naked eye. I got a Flip Mino HD camera last Christmas and it works really well for videoing TV, much easier than the older Sony DV 8mm since there are NO adjustments you can make except Zoom. The downside is it makes huge files that need a ton of processing power to watch on your PC, the MP4 format is hard to edit and convert too. The good thing is it can be uploaded directly to YouTube without hassle and in HD quality up to 720p. Here's a Flip Video: http://www.youtube.com/watch?v=EykM_lam17c You can see a faint bar roll upward at intervals but it's not bad. |
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