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Date: Sun, 3 Mar 1996 06:04:21 -0800
From: "George M. Irvine III" <gmiii@in*.co*>
Subject: Re: reg. 8 vs. hi-8 question
To: techdiver@terra.net
Cc: cavers@ge*.co*
Billy, that explains the long short. In the Sally Ward video there are three 
cameras: one reg 8 , and two high 8's, one multichip. The multi has the best 
color and resolution up close (Bobby McGuires up close of me and Rat), the old 
man (Bob McGuirre) had the long shots, and the Rat (Barry Miller) had the 
travelling shots at medium distance, where Gavin is in the front and I am in
the 
middle. Some of these shots are over 100 feet away under water, and the low 8 
held up really well for that. The high 8 on the same shots tended to make up
its 
own picture and color, so to speak.

LIGHTING-

 The amazing thing about the Rat's camera and lens is that we do not need as 
much light as yo would think. In fact, if you completely avoid the MR heads,
you 
can carry a lot less and get the same result.Bobby used to have a set with MR's 
and they screw up a couple of film sessions because the divers had to keep 
turning around to see if he was still there, since they could not see the 
lights. With Arnold's lights the problem is you think the light man is right on 
you when he is 100 feet away. With the HMI you think the sun is out. When I 
video with Barry, I go by the sound of his scooter and the shadows in front of 
me. 

   By the way I am sure you noticed in the multiman videos that we stillhold
the 
turned-off cave light head in the hand in case we need to signal. With just the 
Rat and I there is no need, but with even three I hold the real light.

   I was watching video riding my bike on the windtrainer last night and I 
noticed some interesting things in the Sally video (for those who want to argue 
gear config). When the video team went to put down their air bottles in the
Cube 
Room at 190, you can see the beauty of good config. I have two 400 wtt lights, 
my regular light, an air bottle, a trimix stage, and a scooter. You can see in 
the vid that none of these items interferes with the others, or poses any
danger 
of entanglement or running over cords or lines. You can see the entire team of 
11 people put down an air bottle and keep going with the vid with no 
stumblebummery , confusion, or tangling. This was all done in one take. Notice 
the bottles are changed in mid water and then dropped, the proper way to change 
a stage (or do anything in a cave), not crawling on the floor.

On Sun, 3 Mar 1996, Billy Williams <billyw@oz*.co*.au*> wrote:
>At 10:35 PM 29/02/1996 -0500, Christopher A. Brown wrote:
>>   George sez: <The only thing we do that seemingly makes no sense is that
>>on multiple
>>>camera dives, we use McGuirre's low 8 for the long shorts, and the two
>>>multichip high 8's for close up. This looks better, and to quote Miller,
>>>"Don't ask me why".
>>> -G
>>
>>Guys --From my experience, I suspect this has to do with "grain" that shows
>>up more in the reg. 8, single chip cameras, than in the Hi-8 jobs.Hi-8
>>jobs, by virtue of their better resolution, are less grainy.
>>
>
>Single  ccd cameras often resolve better than 3 ccd cameras
>because  the light  isn't prismatically split  and sent via 
>three eparate paths to the ccds.
>
>rgrds               billyW
>
>

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