HVX is darker then DVX??

D

digitalJaguar

New member
When I switch between using the DVX and the HVX in darker conditions, the DVX footage is much brighter and lighter then the HVX200 camera. Its not the gain, or the white ballance that makes the difference.. What could it be????
 
It's that the DVX is faster than the HVX. Barry did a report a while ago. I think it's like a 1/2 stop faster.
 
Fewer SD pixels on a same-sized chip = larger pixels = less wasted space between pixels = more total pixel "real estate" per chip than an equivalent HD one = more light sensitivity.

Assuming your "HVX" is a 200, it's noteworthy here that the 200a greatly reduces this disparity though some pretty clever re-engineering of the chipset, and possibly also due to the lens redesign.

BTW I believe "pixel" is the wrong word for an individual sensing point on a CCD. If so, what might be the right word?
 
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Yes, excellent point, the 200A greatly overcomes that. The 200A is technically only 1/2 stop slower than the DVX in progressive, and 1.5 stops slower in interlaced. However, with the advances in noise control, you could easily overcome that deficit by using a little gain, so it may be fair to say that the 200A is, all things considered, about as sensitive as the DVX.
 
Ted Spencer said:
BTW I believe "pixel" is the wrong word for an individual sensing point on a CCD. If so, what might be the right word?
Click to expand...
I think "pixel" just confuses things, because people try to equate pixels on the CCD with pixels in the recorded frame, and they're not equivalent at all.

I think the better term might be "photosite".
 
OK, I dont know all of this technical gargan. I thank all of the people that have replied. Where would I go to find out how to fix this?
 
Hi Jaguar,
Its not something you can fix - except use more light and stop your DVX down to the same IRE level as the HVX.

The HVX is simply not as sensitive as the DVX or other cams (sony...etc). The only other way for you to find better sensitivity in an HD panisonic is if you buy a new HVX200A or the new HPX170 this fall.


J
 
As far as fixing the image in post, use a color correction program or plug-in. I use FCP's Color Corrector 3-way for basic fixes.

As far as Luminosity: bring up the mids a lot and bring up the highs a little (use a waveform to check that you are not blowing everything out). Then bring up the saturation (as the image will look washed out).


J
 
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