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HPX500 Exposure

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Chris Anderson
HPX500 Exposure
on May 29, 2008 at 10:53:19 pm

Hello All,

I've just rented an HPX500 with a Canon HJ17 lens and the exposure seems really hot.
I'm shooting 24pn, outdoors and I have my ND1/64 on and I'm still having to expose at f11 or 16 to avoid seeing zebras which are set to 105.
The shutter is off, gain is at 0.

Any ideas of what can be wrong? My HVX200 seems to to be handling the whites better.

Thanks,
Chris



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Steve Eisen
Re: HPX500 Exposure
on May 29, 2008 at 11:07:07 pm

Must be very sunny. If you don't believe the lens is the problem, you have to check the Detail settings.

FYI the zebras are set to high. Set them to 80 for flesh tones.

Change some of your scene files to see if anything changes.

Steve Eisen
Eisen Video Productions
Board of Directors
Chicago Final Cut Pro Users Group


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Chris Anderson
Re: HPX500 Exposure
on May 29, 2008 at 11:35:05 pm

Thanks Steve,

I usually keep it at 80 that's how I noticed this issue. At 80 everything within the entire frame was zebras.

It is sunny but my HVX200 seems to be about 2-3 stops less sensitive.

I'm not sure if it's the lens either.

Thanks again,
Chris



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Steve Eisen
Re: HPX500 Exposure
on May 30, 2008 at 2:51:45 am

Unfortunately, the 500 does not have a -3db gain. Once again, check the detail settings to see if anything is out of range.

For very sunny days, lower your shutter speed or add a filter over your lens. Both will lower your exposure.

Steve Eisen
Eisen Video Productions
Board of Directors
Chicago Final Cut Pro Users Group


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Billy DeCola
Re: HPX500 Exposure
on Jun 1, 2008 at 1:18:54 am

you should be able to knock out the unwanted light by closing the iris of the lens (try putting it on manual - the servo might not be working in auto mode), turn the gain down, try the built in filters on the HPX and if that doesn't work...put on some sunblock and try using a polarizer filter.

Billy DeCola
http://www.big10media.com




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