Muddy Footage GY HM600 - Page 2 at
DV Info Net

Go Back   DV Info Net > JVC ProHD & MPEG2 Camera Systems > JVC GY-HM 800 / 700 / 600 Series Camera Systems

JVC GY-HM 800 / 700 / 600 Series Camera Systems
GY-HM8xx, HM7xx and HM6xx ProHD camcorders & decks.

Thread Tools Search this Thread
Old April 30th, 2013, 12:28 PM   #16
Join Date: Apr 2008
Location: Sydney Australia
Posts: 1,283
Re: Muddy Footage GY HM600

Hi ~

Experienced it quite often. You can see it visually and on a waveform monitor. I pointed you to Alister's site because he explains it as well as anyone else.

We shoot a lot of network TV football where the lighting can range from intense sunlight to pitch dark shadows in a lot of the stadiums, especially late in the day. Exposures can range from about f16, virtually closed iris, in the direct sunlight to about f2.8 in the heaviest stadium shadow areas. Sometimes we will run - 3dB to keep the exposures from going right down to f16 in the sunlight. Staying on 0dB we can risk over exposure in the sunlight even at f16 so would have to swing in ND filters on the cameras to avoid that. Switching ND filters in and out on a fast moving game is not a good look for the viewing audience. We know there is a trade off but basically it means we can cover the whole exposure range without filter swinging. Another thing is lens diffraction, loss of resolution at the higher numerical f stops. Running negative gain helps us to keep closer to the sweet f stop range on the lenses of f4 to f11. You win some you lose some :)

Chris Young
CYV Productions
Christopher Young is offline   Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

B&H Photo Video
(866) 521-7381
New York, NY USA

Scan Computers Int. Ltd.
+44 0871-472-4747
Bolton, Lancashire UK

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > JVC ProHD & MPEG2 Camera Systems > JVC GY-HM 800 / 700 / 600 Series Camera Systems

Thread Tools Search this Thread
Search this Thread:

Advanced Search


All times are GMT -6. The time now is 08:07 PM.

DV Info Net -- Real Names, Real People, Real Info!
1998-2021 The Digital Video Information Network