iris ring isn't turning smooth anymore at DVinfo.net

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Sony XDCAM EX Pro Handhelds
Sony PMW-300, PXW-X200, PXW-X180 (back to EX3 & EX1) recording to SxS flash memory.


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Old February 5th, 2009, 01:30 AM   #1
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iris ring isn't turning smooth anymore

Suddenly I noticed the iris ring is giving me a hard time. It was always very smooth, now it takes some power to turn it. When I use the iris ring in auto mode, it doensn't properly turn anymore to compensate exposure. any idea what might causing this?

Quick other question ; Can one use the Ewa Marine under water housing for the EX1 also for the EX3? Anybody knows?
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Old February 5th, 2009, 09:18 AM   #2
 
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Sounds like it's time to send it into Sony for a repair. Forcing it could make it worse!
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Old February 5th, 2009, 11:01 AM   #3
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If you are using Auto Mode, then the Iris ring will be powered, just like the Zoom control when you turn the zoom servo On, don'r force either. Try turning the Auto Iris Off and see if it is still stiff.
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Old February 5th, 2009, 11:06 AM   #4
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Mine has always been a little stiff, just not as smooth as a SLR iris with just a little drag or 'momentum' to it. I've thought that was the normal behavior. There is definitely some mass to it and the auto is disengaged. It's really hard to turn with Auto On and the the ring will turn back to what it thinks is the correct setting in that mode.
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Old February 5th, 2009, 11:10 AM   #5
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Just checked my (NEW) EX3 lens using Auto Iris ON and OFF, and there is no drag in either mode.
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