When I put it on record and film my computer screen some weird black moving lines seem to be on the screen. it's not the camera and there are not lines on the screen but that's what shows up when I record it. Any idea why?
I'm just curious btw. I actually just lifted the lens up and happened to catch the screen and it made me curious. Thanks!
2007-04-14 20:14:55 · 3 answers · asked by korngoddess1027 5 in Computers & Internet ➔ Other - Computers
That was an awesome answer. Thanks :D
It's nice to learn something new.
2007-04-14 20:32:01 · update #1
It's called "interlace".
Basically, your camera caught the computer refreshing the screen, though the human eye can't see it.
A computer screen is similar to a TV in that it scans horizontally per line, then move down slightly, and repeats (except LCDs, which I assume you're NOT talking about) until it fills the whole screen. The the screen blanks, and the process starts back at the very top . This happens at the "refresh rate", which usually is at least 60 times per second (or 60 Hertz) if not faster. Optimal windows setting is usually at 75 Hz or faster.
Any way, the "black line" is your camera getting frames at a different rate as the monitor refresh. Your video camera is probably filming at 30 frames per second. NOT an even interval of your monitor refresh. Thus, your camera is "sometimes" catching the blank interval, but not all of it, as it IS going on so fast. As the time goes on, the bar appears to move up and down as they are not in sync.
On a movie involving TVs (think Terminator 2, when Sarah Connor was watching herself being interviewed while in the mental hospital) the TVs are specially synchronized to match the filming rate of the cameras, so you don't see the black bars at all.
2007-04-14 20:24:16 · answer #1 · answered by Kasey C 7 · 0⤊ 0⤋
it could be the resolution of your monitor (or some other stuff that i probably don't know about). your monitor might be set to display in a lower resolution than your camera. since your computer is only worried about taking and displaying photos, it does not require a lot of power to do anything else. your monitor/computer may be set at a low resolution. if this is the case, you can change it in your computer settings. check the monitor colors and brightness to make sure it fits what you think the colors or vibrancy should be. also, it could be the graphics card in your computer. the graphics card controls how well your computer can process pictures, videos, games, etc. and if the quality of the card in your computer is not as high as your camera, that could be the problem. other than that, the only thing i can think of is that when copying the photos to your computer from the camera, the picture files get compressed, eliminating some of the vibrant colors and lowering the resolution. i don't have any suggestions on fixing this but you could try lowering the capturing resolution on your camera and then uploading the pictures to your computer to see if it makes a difference to how similar the images look from the camera to the computer. i really hope one of these suggestions helped. Good Luck!
2016-05-20 03:07:56 · answer #2 · answered by ? 3 · 0⤊ 0⤋
it's always like that on crt monitors, lcd monitors don't do that
2007-04-14 20:17:48 · answer #3 · answered by ryan_macalinao5472 3 · 0⤊ 1⤋