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ARRI D-20 / D-21


tarik hameedi

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I hear there's a deck that piggy-backs on the camera but I've never seen it. Luckily I only have to drag 1 cable, a bnc to the recorder/villiage. Clarmont made me a thin jumper to use but it seems to be stiffer than the bigger cable. Hopefull the sexy uber-light cable I've had for years is 75 ohm so I can use it. We'll see how it goes on Tuesday.

 

rb

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The key is not so much the correct resistance on the cable but the construction, as I hear tell; you need a solid core cable to ensure HD-SDI signal passage for recording, which the sexy uber-lights aren't. I had a conversation with the Mogami rep at NAB and pleaded with him to change the laws of physics on this but alas it is not to be. It would seem that at present, the most flexible connection between HD camera and recorder is going to be fiber, and without it we'll have to put up with curmudgeonly stiff BNC's.

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I just got back from my prep with the Arri D-21. It is wide, but was easy to set up and dynamic balanced very well. The low mode bracket is pretty sturdy and nearly as big as a snow shoe, but only weighed 2 lbs with two 6 inch rods attached. What most impressed me is the low power consumption. It is listed as having a 2.1 amp draw at 24 fps, which I was sure was bs. Turned out they were right as my partially charged pro ni-cads powered the thing for 30 minutes before I grew bored and gave the camera back to the assistant. The batteries only dropped one volt, from 26 to 24.9 during the 30 minutes with the camera's electronics, the spinning mirror, the preston, and cine-tape powered up.

 

I was equally surprised when I dropped it onto a scale. The afore mentioned 56.6 lbs must have been including the sled because I got 32 lbs with all the following accessories:

 

 

I've been saying for a long time that of the HD cameras out there this is the best solution for steadicam so far. Decent weight, low power consumption a real VF.

 

Its a great steadi camera

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I was equally surprised when I dropped it onto a scale. The afore mentioned 56.6 lbs must have been including the sled because I got 32 lbs with all the following accessories:

body, low mode bracket with two 6" rods, two pro plates, two preston motors, clip-on mattbox with eyebrow, cine-tape, one 4x5 filter, 40mm master prime, and all cables.

here's the camera with the above listed aks on the scale (and out of focus!):

 

Great details and photos Ron; it's really nice to have accurate information on weight with AKS since the camera payload max for my sled with the G50 arm is around 35-36 lbs before I'm dialed all the way out. Thanks for taking time to do all that!

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no worries -- my scale is certainly not the most accurate you can get but it's at least +/- .5 lb. I got into this anal habit years ago with my 3a arm and a pretty heavy modded 2 sled. I used the evo-220 and with 24v cameras I had to carry extra batts on the sled so every pound was a big deal.

 

It's nice to know a ball park so you know what to expect.

 

rb

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One more...

Couple of questions about that photo Erwin...

Is that tiny BNC running off the front of his rig just for monitoring? Is there a downconverter that works with this camera so it is possible to be completely cable free while still sending an image to the village?

Also, what is that cable running from the camera and down towards the bottom of the sled? Does the Venom suck so much juice that he had to add a battery to his system or something and run the power outside the post?

Just curious...

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(Is that tiny BNC running off the front of his rig just for monitoring? Is there a downconverter that works with this camera so it is possible to be completely cable free while still sending an image to the village?)

 

 

 

That was a direct down converted image to monitor and with the flash mag. we would do video playback after the shot .

My DP and the director would walk with me and have an 8 in HD monitor plugged into an SDI out port on the side of the camera.

 

 

J.Radzik

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(Is that tiny BNC running off the front of his rig just for monitoring? Is there a downconverter that works with this camera so it is possible to be completely cable free while still sending an image to the village?)

 

 

 

That was a direct down converted image to monitor and with the flash mag. we would do video playback after the shot .

My DP and the director would walk with me and have an 8 in HD monitor plugged into an SDI out port on the side of the camera.

 

 

J.Radzik

Hmm, I think I'm confused. If they were walking next to you with a hardwired HD monitor (which sounds like a real treat), why did you need to have a hard wired down converted image? Why didn't you just transmit the down converted image to video village?

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(Is that tiny BNC running off the front of his rig just for monitoring? Is there a downconverter that works with this camera so it is possible to be completely cable free while still sending an image to the village?)

 

 

 

That was a direct down converted image to monitor and with the flash mag. we would do video playback after the shot .

My DP and the director would walk with me and have an 8 in HD monitor plugged into an SDI out port on the side of the camera.

 

 

J.Radzik

Hmm, I think I'm confused. If they were walking next to you with a hardwired HD monitor (which sounds like a real treat), why did you need to have a hard wired down converted image? Why didn't you just transmit the down converted image to video village?

 

 

The image was to poor to transmit . Our producer did not know when we were shooting with a down converted image at video village . He thought that things were out of focus . With to HD monitors side by side , one clear and clean the other was looking very buzzed.

even when we would tell him other wise. The director liked to walk with the camera and have true 422 on the monitor as would would shoot .

 

It is hard to please everybody - even when you would tell them ( This this down converted - NOT 422 )

We had two cameras going to whole time and when one is cabled ( 422 image )and when the other was down converted the creatives would start to ask what is going on .

 

As for my monitor with direct hard wire . I was using a Cine 3 super bright not an HD monitor . The camera had an analog out with a built in down converter.

 

Since then i did another HD show and i invested into an HD monitor from Transvideo and i'm glad that i did .

 

J

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