HVX200 + P S Technik Mini35 Adapter - Grainy Videos

D

DYORD

Member
Hi! I'm shooting for a cinema release using HVX200 with P+S Technik adapter. I'm using the adapter for the ARRI prime lenses: 16mm, 24mm, 32mm, 50mm, 85mm, & 135mm.

I don't know what went wrong but most of my recorded videos are unacceptably grainy.

These are my settings:

720p - 60fps
scene file - F4 (HDNOR)


I'm using an Anton Bauer power source for the PS Technik and the Camera.

This has been our problem ever since. Do you have a better suggestion to avoid the grainy videos in the future?
 
Last edited:
When you shoot 50i/25p use a 48deg. Shutter.
One of the irises (or both), the camera iris isn´t that much "grain sensitive" thou.

Shoot as open as possible and use ND filters.

Frank

Edit, just saw your settings. 60fps = 30 shutter.
 
why isn't 60fps = 1/60 shutter?!? I don't get it.. i thought if I'm shooting at a frame rate of 60... I'm already at 1/60 shutter speed.
 
Always use 50% or you get this strobo look, like fight scenes in Gladiator, Private Rayan and the like.

And you don't turn a shutter on or off - you adjust the speed. You cant shoot without shutter.

Frank
 
I'm not very familiar with the P+S technik adapter... there's a knob that has set of numbers. What's that for?! Is it the IRIS of the adapter? What number should you recommend to avoid the noise?
 
I hope that I'm reading wrong, but is the 'screwed up footage' from a test shoot or from the actual project?

If it is from parts of an already shot project: this is why you should test, test, test when confronted with a new piece of gear.

Go out and shoot at many different settings and take notes - find the 'look' that suits the project / client and then lock it in. If you rented the camera / adaptor / lenses from a supply house - go back and talk to the technicians, they should have the knowledge that you're looking for.

Bets of luck.
 
Last edited:
Actually... this has been the problem ever since... it's been here in our company for more than a year now.. and until now, we're still looking for solutions. I'm not sure if anyone had the same problem.. but there was one time... (the P+S doens't have a battery indicator).... and i think the moving mirror wasn't moving that fast... all videos were grainy. You can't even notice it in the tiny LCD... even on a 14" crt monitor. You'll only see it in post production.

Our solution was... change the battery of the P+S the same time we change the batt of the camera. Still... that's too risky.

The knob on the adaptor (speed of the glass) where always set to "4". What are the pros and cons if i switch that to a faster speed?
 
you should post a "screen grab" or some sort of multi-media example for us to see. grain is very difficult to asses through text. grainy text? ;)

here to help,
andrew
 
A higher camera shutter speed will capture more grain on images, the mini35 series 400 is suppose to handle higher f-stops but I always found it best to shoot around T4-T5.6. If you need to stop down more then use a ND filter, do not stop above 5.6.

The speed control increases the vibrating glass on the series 400 models, this might be best adjusted using HD monitor to achieve optimum preferred results. On the series 300 model the glass rotates and this is easily picked up with HD cameras although some people have been successful.
 
You must log in or register to reply here.
Back
Top