I want to get this one specific scene from a movie on camera and I've looked all over the web. When I try and take the picture with my camera though, it's all fuzzy with lines all over it. How can I eliminate those?
2006-09-17 18:07:01 · 6 answers · asked by orangebug89 1 in Consumer Electronics ➔ TVs
The correct shutter speed is 50th sec. The other dudes saying 30th are confused by the frame and pic rates on a TV. the frame rate is 25 per sec, there are 2 frames to a full pic ( its called interlace ) If you take a photo at 25 or 30 per sec you only capture half a picture. To simplify it what happens is the scan starts at the top left of the pic tube at line number 1 , then comes number 3 and following all the odd numbered lines until the bottom of the pic then the spot or trace or scan if you like flys back to the top of the screen and then fills in all the even numbered lines , hence 25 frames = half pic 50 frames = 1 full picture !! Easy eh ?. Now get the focus right and you will get a perfect picture !!!
The dudes that say the rate is 30fps obviously live in USA, the fact that neither of them seem to have heard of interlace says that their knowledge of TV is basic. I will correct then where the mains AC is 50hz then its 50 pics a sec or if you like 25 half frames !!. If the lines the asker is talking about are the normal scan lines that you see on CRT TVs then if you see those on your photo it means that you have correct focus !! the only thing to get rid of those is to have your photo slightly out of focus or be further away from the screen. Now then --believe me, I know what I am talking about look at my source and if your credentials are better than mine I will get on my knees and apologise . PS you should give up the dope Running !
2006-09-17 18:44:59 · answer #1 · answered by Realist 2006 6 · 0⤊ 0⤋
Well, since the average TV screen refresh rate is 30 frames per second, you need to shoot at about the same speed or less, say one thirtieth or one fifteenth, then you'll get the whole frame in the shot. Otherwise you'll get an annoying diagonal line. So, set your camera shutter speed at 1/30 or1/15 and adjust the aperture accordingly, or set the aperature on automatic. It is best to take a series of shots on different settings, so you'll get at least one good one OK?
2006-09-17 18:14:30 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Film is normally shot at 24 FPS. TV is 30 FPS!!! (Not 25 as previously stated!!) Experiment with shutter speeds to eliminate the lines in picture.
2006-09-18 03:52:33 · answer #3 · answered by RICHY RICH 3 · 0⤊ 0⤋
You need to set the shutter speed to 1/30 sec. That is how long it takes the electron beam to make one complete scan from top to bottom.
Ideally, you would synchronize it with the start of the refresh cycle. That can't be done manually.
2006-09-17 18:14:38 · answer #4 · answered by speakeasy 6 · 0⤊ 0⤋
your shutter speed is too slow. it has to be about 1/30 of a second and has to trigger at the refresh time. fast speed an multiple shots is the only way.
2006-09-17 23:42:20 · answer #5 · answered by Anonymous · 0⤊ 0⤋
it has something to do with shutter speed, can't recall if its increase or decrease though. Increase I think, so it takes the picture quicker.
2006-09-17 18:15:31 · answer #6 · answered by hoonette 3 · 0⤊ 0⤋