Topics

Broncolor HMI F1600 for High Speed / Phantom ISO

Justin Black
 

Hello,

Have a phantom shoot coming up, and am looking at using the Broncolor F1600 HMI with para reflector attachment. Won't be shooting higher than 500fps. The brochure says "absolutely flicker free," but thought I'd see if anyone has any personal experience with this setup. 

Also wondering if anyone has anecdotal advice on recommended ISOs for Phantom - results to expect when rating above the base of 320? I am aiming to test but am uncertain I'll be able to given the cost of the phantom tech

Thanks for any insight!

--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433

Mark Sasahara
 

Justin,

Which Phantom will you be using?

4K Flex - E.I. 250, but you can sometimes get away with 400. I don't think I've gone higher than 500.
2K Flex - E.I. 500 - 800. You can go to 1000, but watch out for noise. Generally, the blue channel is noisy, use daylight flavor for best results.
HD Gold - E.I. 80 - 160. Thank God I don't have to use this thing anymore.

Watch your highlight clipping. With these cameras, especially, the 2K Flex, you have to watch that your highlights don't blow out and watch for noise in the shadows. Generally, use daylight balanced illumination for best results. HMI's with high speed ballasts. Arri just came out with new ones, but I'm not sure how good they are. The old ones are OK, but there always seemed to be one out of the four ballasts that would flicker. Tungsten with half CTB, can also work.

Hope this helps,

-Mark Sasahara, DP, NYC

Mark Sasahara
  marksasahara@...
   718-440-1013
    http://msasahara.com


On Tue, Jul 31, 2018 at 2:05 PM, Justin Black <contact@...> wrote:
Hello,

Have a phantom shoot coming up, and am looking at using the Broncolor F1600 HMI with para reflector attachment. Won't be shooting higher than 500fps. The brochure says "absolutely flicker free," but thought I'd see if anyone has any personal experience with this setup. 

Also wondering if anyone has anecdotal advice on recommended ISOs for Phantom - results to expect when rating above the base of 320? I am aiming to test but am uncertain I'll be able to given the cost of the phantom tech

Thanks for any insight!

--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433

Justin Black
 

Pardon the double post, I thought my first message didn't go through due to lack of signature.

Received a call from Broncolor with some useful info - 

The ballast has 3 modes, low noise, optimal and high speed.

Low noise is rated to 100fps, optimal to 800fps, and high speed to 2000 (at the cost of added green to the quality of light and more sound from the ballast).

Any advice on phantom ISO rating still appreciated.

Thanks all!

--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433

Justin Black
 

Thanks Mark. We are shooting on VEO-4K. The Vision Research page appears to be down at the moment, but our rental house page cites:
 
  • Color ISO 320T (Rolling shutter); 640T (Global shutter)*
  • Recommended EI range is 800-1000 
--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433

Mark Sasahara
 

Yeah, that sounds about right.

I hate that camera. :~(

Obviously, get a Phantom Tech. They will make things go smoother.

-M

Mark Sasahara, DP, NYC

Mark Sasahara
  marksasahara@...
   718-440-1013
    http://msasahara.com


On Tue, Jul 31, 2018 at 3:35 PM, Justin Black <contact@...> wrote:
Thanks Mark. We are shooting on VEO-4K. The Vision Research page appears to be down at the moment, but our rental house page cites:
 
  • Color ISO 320T (Rolling shutter); 640T (Global shutter)*
  • Recommended EI range is 800-1000 
--
Justin Black
Director of Photography
Associate Member, Canadian Society of Cinematographers
905.808.0433