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Home: Video University Forums: Tech Q & A:
Video Problems - Ghostly outline and lack of clarity

 

 


craigdblom
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May 22, 2006, 1:44 PM

Post #1 of 8 (1262 views)
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Video Problems - Ghostly outline and lack of clarity Can't Post

I have already searched the forum for answers to these questions. If they are there and I missed them, I am indeed sorry.

My wife teaches dance at a University, and I frequently come to record her dance concerts when video resources cannot be there. This happens often as they are quite busy.

These dance concerts take place in a darkened auditorium, with varying stage-lighting effects changing often. The camcorders I've used so far have two problems:

First, is the image quality. Dancers like to be able to see all their choreography at once, rather than showcasing parts of it. So I need to be able to have the full stage in the camera's viewer, and I am always at least half-way to the back of the auditorium. The image quality I have achieved so far, by using a mini DV camcorder, hasn't been terrible but the video quality is definitely not as clear or as sharp as I would like it to be.

Second, is the shadowing effect (I'm not sure what else to call it) where the people on stage have a second (blurry and ghostly looking) outline just to the side of their body. These extra outlines are very close to their bodies and tend to be on just one side (usually the left). From the perspective of the camera, from near the back of the auditorium, it looks like the second image is just a couple of inches away from their body - if that helps.

I've even tried to bypass problems the camcorder's tape might cause by running the audio and video lines directly into a DVD Recorder, but still get the same effects.

Can you point out specific features of a good camcorder that would help fix these two problems? I would like to go completely digital (a hard-drive on the camcorder in place of a tape).

While I'm sure a professional camera would go a long way towards fixing these problems, they are cost prohibitive for me. I need a NON-professional camera that would double as my family's home camcorder.

Any help anyone is able to give will be greatly appreciated.

Thanks,
Craig


Bob A
Veteran

May 22, 2006, 3:31 PM

Post #2 of 8 (1255 views)
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Re: [craigdblom] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

If you are a lot more specific about what you are using now you will get better responses.
It sounds like you are shooting with a VHS camera and seeing an effect called 'ringing'


(This post was edited by Bob A on May 23, 2006, 12:22 PM)


videobear
Veteran


May 23, 2006, 10:52 AM

Post #3 of 8 (1232 views)
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Re: [craigdblom] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

Do you see the ghosting in the camcorder's viewfinder, or only on your playback monitor? This is often the fault of the playback device, not the camera.




Regards,
Doug Graham
Panda Productions


craigdblom
New User

May 23, 2006, 11:24 PM

Post #4 of 8 (1215 views)
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Re: [Bob A] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

The problem also exists in the viewfinder.


craigdblom
New User

May 23, 2006, 11:25 PM

Post #5 of 8 (1214 views)
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Re: [Bob A] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

As far as the specifics of the camera I am using goes, I'm afraid that the camera is at work and we are on vacation. The only thing I can remember for certain is that it is a digital camera that runs the DV Mini tapes.



(This post was edited by craigdblom on May 23, 2006, 11:27 PM)


Bob A
Veteran

May 23, 2006, 11:37 PM

Post #6 of 8 (1209 views)
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Re: [craigdblom] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post


In Reply To
The problem also exists in the viewfinder.


Then there is no adjustment that will help the problem. The camera is cooked, broken, busticated, NFG! Any camera working well will produce a better picture. In the circumstances you outline, a 3 chip Sony VX 2000/2100 or PD 150/170 will yield the best results. Those probably being out of your range to purchase, you could try to rent or borrow one. Otherwise just buy any digital camera you can afford and do your best, it will look much better than the broken one.


craigdblom
New User

May 24, 2006, 2:35 PM

Post #7 of 8 (1186 views)
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Re: [videobear] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

Thank you Bob A and Videobear, for your input. Something VideoBear said sparked my mind. He thought that part of the problem might be the playback device, and while I don't have access to the camera right now, I do have access to the DVDs I burned when using it. So I did some investigating. Here is what I found.

I taped three dance concerts with the same camera on three different years. The first year, I was required by the auditorium manager to be at the very back of the auditorium. I found that on the DVD, both problems were worse when I had to be further away. When I zoomed in closer to the dancers, both problems weren't as bad.

The second year, I was able to move closer, about 1/3 of the way up the room (closer to the stage). I found that both problems lessened once again.

Now, here is something interesting. The color red and skin color bled into the extra outline more than other colors, and black (for the most part) did not produce the problem with the ghostly outline. There also seemed to be more trouble with the second, ghostly outline of the dancers when there was more contrast between the colors the dancers were wearing (or their skin color) and the background color.

One more interesting thing (sparked by Videobear's question). The two examples of concert videos I used above were taped straight onto a dvd recorder from the camera (bypassing the digital tape) When I looked at another DVD I made where I recorded from a digital (mini) video tape to the DVD recorder, the problem of the second outline was much worse, even though the camera had been closer to the stage than the first two examples.

I hope that wasn't as clear as mud. Let me know if I can clarify anything.

These videos all have a lack of clarity or lack of crispness in the video images. I'd like to come out with a sharper video image when I must have the full stage in view. When I zoom in on subjects, the video images sharpen up. When I must pull back to have the full stage in view, I lose that sharpness.

I had been very seriously thinking about a 3 chip digital camcorder. Might that help to fix both the extra outline and the loss of sharpness from further back in the auditorium? I do want to address both issues when purchasing my new camcorder.

Thanks again for your help.



(This post was edited by craigdblom on May 24, 2006, 2:37 PM)


videobear
Veteran


May 24, 2006, 6:04 PM

Post #8 of 8 (1181 views)
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Re: [craigdblom] Video Problems - Ghostly outline and lack of clarity [In reply to] Can't Post

The ghosting is being caused by something amiss in the camera. Since the problem is worse when farther from the stage, I suspect something wrong in the optics, but it could be in the electronics. While a 3 chip camcorder will give you a better picture than a one-chip model, simply getting another one-chip camcorder should solve the problem. Or send the camera to an authorized service center, especially if it's still in warranty.




Regards,
Doug Graham
Panda Productions