video problem

[dragon2 2]

Yesterday as I was about to film the greeting of my 2nd tandem video of the day, I noticed lots of horizontal stripes in my screen everywhere there is a lightsource, on my trusty TRV25. What's up with the stripes?! Ran to change cameras, did the jump with an old backup camera.

After the jump I reset the camera, tried a few settings (sports mode, auto aperture etc), no good. Thumped camera a few times, no good either. Tried some more settings. Thumped camera HARD. Hey it works fine again!

Then today I was going to film a solo jumper, camera works fine initially. After 2 ground shots, stripes are back making for somewhat ghostly figures walking to the boarding area with the setting sun as backdrop. We're at the plane now so no time to exchange camera, so I whack it a few times and it's back to normal. Jump footage was normal. Camera is still behaving normally now.

Anyone ever have a problem like this? What did it cost to fix it..?

ciel bleu,
Saskia

[everymansaved 0]

From what you're describing, it sounds like ditry heads, have you tried a head cleaning tape?

God made firefighters so paramedics would have heroes...and someone can put out the trailer fires.

[dragon2 2]

No, haven't tried that. But it is not digital blocking like you get with dirty heads, it's more like what you get when you use a star filter on a stills camera. Like this:
http://www.tribuneindia.com/2003/20030830/w4.jpg
but only horizontal.

ciel bleu,
Saskia

[everymansaved 0]

hmmm, not sure then, sorry!

God made firefighters so paramedics would have heroes...and someone can put out the trailer fires.

[DSE 5]

I'd like to see a screen grab, as there are a couple things that could have caused this, none of which can be easily described. Hope that it's not damage to the sensor.

[dragon2 2]

Here's the bit of weird footage from today (17 MB), I didn't record any of the inside-the-hangar/bar footage where it showed even worse because of all the light sources (windows, xmas lights, overhead lights).
http://www.12000ft.com/video/161207.avi

ciel bleu,
Saskia

[freefalle 0]

I think I agree with DSE it may be damage to the sensor. although, was it humid when you were shooting?

[dragon2 2]

Quote

I think I agree with DSE it may be damage to the sensor. although, was it humid when you were shooting?

It wasn't humid on sunday, just cold, however on saturday it was humid enough at 2-3k to fog up my lens, which cleared by the time I landed.

ciel bleu,
Saskia

[mccordia 74]

Is your camera mounted in a Dbox or protective (NeoPrene) cover??

Jumping a camera thats 'out in the open' can (and most often will) cause moisture/wind/cold damage to heads/sensor at some point..

But honestly no clue whats causing this weird image blurring...

JC
FlyLikeBrick
I'm an Athlete?

[DSE 5]

After finally seeing the vid, it appears that your prism may have shifted, the sensor may have gunk on it, the prism may have gunk on it, or the backlens may have shifted (exceptionally unlikely, but worth mentioning).
None of those are within my own expertise for a suggestive fix.
It's optical, not electronic, because I can see encoding/compression flaws in both clear and artifacted image, suggesting the problem is with the image before it's being compressed.

[erikph 0]

my guess: a failing sensor because of moisture in the chip cavity.

I remember that a few years ago, Sony had problems like this with certain models of image sensor chips they manufactured. The good news is that they offered free sensor replacement. Maybe a search on something like "bad sensor TRV25" will get you more.

blue skies,

http://myjumps.blogspot.com/