VX-2000 Design Problems at DVinfo.net

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Sony VX2100 / PD170 / PDX10 Companion
Topics also include Sony's TRV950, VX2000, PD150 & DSR250 family.


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Old May 29th, 2003, 02:16 PM   #1
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VX-2000 Design Problems

Has anyone noticed that the VX2K has a serious design flaw at night with sharp points of light? When i shoot at night I get ghost images or flares from the optical stabalizer or the optics that are used in it. They wiggle around the screen. It is best seen when shooting on coming traffic - I have been shooting Motorcycles stunting at night. I get this with any sharp pinpoint light source in the field of view. When I turn off the stabalizer the flareas are still there just stationary. I suspect that this is poor quality glass or poor coatings on the glass. Is there any fix other then turning off the stabalizer? I really need it being that I shoot from moving vehicles and require hand held. I shoot from tight spots from time to time and can't afford the steady cam. I am wondering if this has been seen in the PD-150, if not I am buying one.
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Old May 29th, 2003, 02:24 PM   #2
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The VX2k and the PD150 are *exactly* the same optically. They have the same lens, the same OIS, the same chips and the same resolution, so don't go changing your camera.

It's hard to understand your problem but if it's flare you're seeing then yes, the VAP OIS is adding two plane parallel surfaces to the optical lineup, and that means 4 more surfaces for light to reflect off. But in most respects the OIS is pretty darn transparent and can safely be left on at all times.

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Old May 29th, 2003, 02:28 PM   #3
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Quote:
Has anyone noticed that the VX2K has a serious design flaw at night with sharp points of light? When i shoot at night I get ghost images or flares from the optical stabalizer or the optics that are used in it...on coming traffic...
Since you are shooting in poor lighting, and light from oncoming traffic is beaming right at the cam, I would bet you a buck that no cam is immune to this flaw. It's not a flaw. That's the way it is.
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Old May 29th, 2003, 02:31 PM   #4
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No no no

I have not seen this before.. The Digital8 Sony does not have this problem and neither does my TRV25. I will get a few clips together and post them so you can see what I am talking about.
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Old May 29th, 2003, 03:04 PM   #5
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Do you have a filter on your VX2K? If so, take it off and try again.
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Old May 29th, 2003, 03:12 PM   #6
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Filter...

I have tried all that.. I am just going to have to get a few clips posted to show everyone what I am talking about. It really ticks me off when i get a nice stunt and come back to see that mess on my video.
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Old May 29th, 2003, 03:33 PM   #7
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Video Clips

Ok, you can get the video clips <a href="http://www.realnola.com/outtakes.wmv">HERE</a> and if that post does not allow HTML then go to this URL.

http://www.realnola.com/outtakes.wmv

I know they are poorly shot but they are a good example of the problem I have with this camera. I do not get this problem at all during the day or in decent lighting conditions. I do see it at dusk though with pinpoint light sources, specially ones that are moving.
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Old May 29th, 2003, 03:41 PM   #8
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More video examples

Here is a nice example of a hand held shot during day light conditions. There is nothing that can be seen here, only night time footage brings out this problem.

This is a snip out of a project I am working on.

http://www.realnola.com/bayou1clip.wmv

Sorry but it is quick and easy to encode this into a windows media format, you mac guys can still read it I am sure..



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Old May 29th, 2003, 05:52 PM   #9
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Hi Genlight,

The artifact you are encountering is known as the firefly effect (at least on this forum). It has been discussed here on several occasions and this is the definative thread on it. If you use the search function (firefly) you'll see several more posts on the subject but nothing really new to add to the discussion.

On another matter, real names are used on DV Info. Please email me and I'll see the your user name is changed. Thanks for you cooperation.
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Old May 29th, 2003, 06:33 PM   #10
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Re: VX-2000 Design Problems

<<<-- Originally posted by Genlight : I am wondering if this has been seen in the PD-150, if not I am buying one. -->>>

Chris Hurd posted this in another forum recently. If true then it probably wouldn't help to switch to another Sony or a Canon.

"Super Steady Shot has been Sony's brand for OIS for years. Basically they're licensing Canon's OIS technology."
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Old May 29th, 2003, 08:34 PM   #11
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Moths of March

As Jeff points out, there are several threads on similar looks and one starts March 21, 2003 with my "Moths of March" (my description at time of "firefly" effect). Most of that thread thought my situation was associated with Super Steady Shot of VX2000 and many good comments on that. However, this thread says stabilization was turned off and still got "fireflys" so comment that "fireflys" are normal in the lighting conditions seems most appropriate (low light performance still impressive).
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Old May 29th, 2003, 09:09 PM   #12
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No

The fireflys are directly caused by the ISO because when I turn off the IS the fireflys dont jump around anymore, they just remain still. If you watch on a monitor while switching back and fourth between IS on and off WITH a moving light source, you can see for certain the problem I am talking about.

I did read the posts, interesting. I see there are some doubters out there that think this is something else, these folks need to do further observation and testing under different conditions. All one needs to do is shoot a moving vehicle at night with IS on then turn it off. The results are amazing. Thanks to everyone for the replies, i appreciate the pointers to the former posts.
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