HPX250: Concentric Circles in Viewfinder EDIT: caused by filter

M

M2Dpost

New member
Had an interesting experience with my 250 today and I am wondering if anyone else has seen this. I was shooting some green screen footage and I could see some faint concentric circles in the viewfinder on the green screen. It was definitely coming from the camera as when I panned around the circles would move with the pan. It did not show up on the video files from the P2 cards but was noticeable on the flip out monitor and on the HDSDI out to an outboard monitor.

I have shot green screen with it before and never noticed this. Maybe I just didn't see it till now, I don't really know. It was almost as if there was a circle pattern burned in on the display.

Anyone else see this on a 250?

Mike
M2 Digital Post Inc.
San Diego, CA.
 
Thought I would follow up on this as I figured out the issue. Turns out the Tiffen UV Protector lens filter I had screwed on was causing this. As soon as I popped it off the circles were gone. Interesting though how the camera seemed to filter the issue out on the recorded content.

Mike

Michael W. Towe
President M2 Digital Post Inc.
San Diego, CA.
 
M2Dpost, do you think it was a defective Tiffen filter, or was the filter smudged or compromised in some way?
I am one to protect the lens on my camera as I would rather throw away a filter rather than damage my camera's lens, but if the quality of the filter has
negative effects on the picture quality, then this is not acceptable.
 
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