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-   -   EX1 Loss of focus at Infinity (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/497712-ex1-loss-focus-infinity.html)

Bruce Rawlings June 27th, 2011 08:57 AM

EX1 Loss of focus at Infinity
 
My EX1 has been superb till now. For some reason I now cannot focus at infinity. I have checked the back focus which is fine and Autoflanged under controlled conditions with Seimens charts just in case. This did nothing, the problem is still there. Does anyone have ideas before I contact Sony. By the way classic back focus symptom of soft at wide angle is not present. Will try to work out how to load a picture example later.

Mitchell Lewis June 27th, 2011 12:09 PM

Re: EX1 Loss of focus at Infinity
 
I had a back focus issue with our EX3 (after it took a nose dive off the tripod!) and doing the automatic back focus outlined in the manual fixed the problem. (we were very lucky!)

Alister Chapman June 27th, 2011 07:49 PM

Re: EX1 Loss of focus at Infinity
 
Don't backfocus an EX1 or EX3 with a siemens chart, you often won't get good results. Use a flat textured surface such as a brick wall or wall with a patterned wall covering. Make sure the camera is at least 3m (9ft) from the wall, preferably 4m (12ft) or more for best results.

Bruce Rawlings June 28th, 2011 11:47 AM

Re: EX1 Loss of focus at Infinity
 
Thanks for info Alister. Will try Autoflange again.

Alister Chapman June 28th, 2011 09:45 PM

Re: EX1 Loss of focus at Infinity
 
Good luck Bruce, You can always take the EX to the drop-in service center at the Sony Tech Center in Pencoed, one of Sony's best kept secrets!

Bruce Rawlings June 30th, 2011 08:25 AM

Re: EX1 Loss of focus at Infinity
 
Being in Cardiff I know that secret - will give them a call. Thanks.


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