Occasional Flash during onboard shooting at DVinfo.net

Kaku Ito · November 4th, 2007, 09:04 AM

Has anyone experienced intermittent flash during onboard shooting?
It happened with the first HVX200 I had before and I'm experiencing on the second one that I have now.

Here's the clip.
http://www.onebikeguy.com/Kakugyo/P2...xtreamcam.html

ND filter shaking? OIS malfunctioning?

Nate Weaver · November 4th, 2007, 11:46 AM

I've seen this before from cameras getting knocked around (meaning excessive vibration).

I've never investigated fully because the vibration was my primary problem to take care of...take care of that and the exposure issue goes away.

After watching your clip frame by frame, my hypothesis would be that the iris mechanism is built in a way that makes it fluctuate with vibration...in other words, this a mechanical vibration problem, not an electronic one.

Leonard Levy · November 4th, 2007, 04:31 PM

seemed to coincide with bumbs.

Kaku Ito · November 4th, 2007, 07:25 PM

Hi,

Well, I guess I just have to tune my suspension to be more supple to suck the bumps then.

I can do that by making the air pressure in the shock and the tires.

November 4th, 2007, 09:04 AM	#1
Kaku Ito Trustee Join Date: Jun 2004 Location: Chiyoda-ku, Tokyo Posts: 1,382	Occasional Flash during onboard shooting Has anyone experienced intermittent flash during onboard shooting? It happened with the first HVX200 I had before and I'm experiencing on the second one that I have now. Here's the clip. http://www.onebikeguy.com/Kakugyo/P2...xtreamcam.html ND filter shaking? OIS malfunctioning?

November 4th, 2007, 11:46 AM	#2
Nate Weaver Wrangler Join Date: Oct 2002 Location: Los Angeles, CA Posts: 2,100	I've seen this before from cameras getting knocked around (meaning excessive vibration). I've never investigated fully because the vibration was my primary problem to take care of...take care of that and the exposure issue goes away. After watching your clip frame by frame, my hypothesis would be that the iris mechanism is built in a way that makes it fluctuate with vibration...in other words, this a mechanical vibration problem, not an electronic one. __________________ My Work: nateweaver.net

November 4th, 2007, 04:31 PM	#3
Leonard Levy Trustee Join Date: Feb 2006 Location: USA Posts: 1,684	seemed to coincide with bumbs.

November 4th, 2007, 07:25 PM	#4
Kaku Ito Trustee Join Date: Jun 2004 Location: Chiyoda-ku, Tokyo Posts: 1,382	Hi, Well, I guess I just have to tune my suspension to be more supple to suck the bumps then. I can do that by making the air pressure in the shock and the tires.