Back focus adjustment?

R

r-coons

New member
I work with a HPX170 and just returned home from a trip to find that the camera is having what appears to be an issue with the back focus. I'm used to larger television cameras that have a ring you unlock to fix the back focus, and I can't find anything like that - or any other adjustment method - on this camera.

When I zoom all the way in on something to focus, it starts to go soft the second I pull out. Does the same in both auto and manual focus modes.

Any suggestions on how to correct this problem are greatly appreciated!
 
The 170 lens is permanently affixed to the camera body or at least it appears to be, so, back focus, or flange adjustment should not be required nor, I suspect, even possible from the user's perspective. Has the camera been dropped or subjected to impact? In addition, have you noticed the same focus issue at all apertures? If your response is no to the former and yes to the latter, I would call Panasonic tech support... the camera does have a lengthy warranty.
 
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I have the same problem with the picture going soft when i zoom back. You can really see it in the just before you hit full wide. I use a monitor with 1280x720 so its easy to see. If I put the focus in full wide and use the monitor to focus i can get it abit more focused all back on infinity. But the object is 2-3 meters away.

Here a nother thread i found with this problem.
http://www.dvinfo.net/forum/panason...corders/397323-hvx-200-back-focus-issues.html
 
This is probably something that will have to be adjusted by a qualified tech. Since the lens is fixed my guess would be the chip is out of allignment????
 
The camera is never dropped if this helps. I would appricate if someone would post some picture or footage of full wide shots thats as sharp as possilbe straight from camera. Seam i dont get as sharp i would like now days.
 
I did the same quick test on another hvx today and it looks like this is actually normal. Weird that I got a little bit better focus at infinite thou when its only 2.9 meters to the object in focus.
 
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