Lumix 42.5 lens connector issues at DVinfo.net

Jeroen Wolf · September 12th, 2016, 02:05 AM

On a shoot the other day I was regularly unable to adjust aperture or focus on the Lumix 42.5 f1.7 lens coupled with the Panasonic GH4. Removing and reconnecting the lens and turning the camera on and off would ultimately work- but often it would take several tries to get it functioning again.

I have never had such problems with any of my other (Panasonic) lenses and this one is new. Is there something I can do/has anyone ever experienced this? Clean the connectors with some fluid?

I still have warranty and could send it in but I could lose the lens for 3-4 weeks and I most likely need it before that...

Noa Put · September 12th, 2016, 07:40 AM

This looks like a lens malfunction, I would just send it back now, if you don't you might be able to use it the following weeks but it's of no use if i doesn't work at a shoot.

Jeroen Wolf · September 13th, 2016, 02:28 AM

Thanks, Noa, just got word from tech repair that I can try cleaning the connectors with alcohol. I haven't even tried that yet but every time I switch on the camera, the lens now seems to work fine. I will clean the connectors and give it a shot and bring the 12-35 with me as backup.
The job I need the lens for is static portraits, so no run 'n gun and chances of missing the moment...

Waldi Krasowski · September 19th, 2016, 05:29 AM

At the back of the contact unit there is ribbon, flex cable - sometimes poorly soldered.

September 12th, 2016, 02:05 AM	#1
Jeroen Wolf Major Player Join Date: Apr 2006 Location: Amsterdam Posts: 355	Lumix 42.5 lens connector issues On a shoot the other day I was regularly unable to adjust aperture or focus on the Lumix 42.5 f1.7 lens coupled with the Panasonic GH4. Removing and reconnecting the lens and turning the camera on and off would ultimately work- but often it would take several tries to get it functioning again. I have never had such problems with any of my other (Panasonic) lenses and this one is new. Is there something I can do/has anyone ever experienced this? Clean the connectors with some fluid? I still have warranty and could send it in but I could lose the lens for 3-4 weeks and I most likely need it before that... __________________ www.imaginevideo.nl Just published the second of my viral mini-doc series '100' https://youtu.be/ZqHFBrV-oOc Last edited by Jeroen Wolf; September 12th, 2016 at 03:09 AM.

September 12th, 2016, 07:40 AM	#2
Noa Put Inner Circle Join Date: Jun 2007 Location: Belgium Posts: 9,510	Re: Lumix 42.5 lens connector issues This looks like a lens malfunction, I would just send it back now, if you don't you might be able to use it the following weeks but it's of no use if i doesn't work at a shoot.

September 13th, 2016, 02:28 AM	#3
Jeroen Wolf Major Player Join Date: Apr 2006 Location: Amsterdam Posts: 355	Re: Lumix 42.5 lens connector issues Thanks, Noa, just got word from tech repair that I can try cleaning the connectors with alcohol. I haven't even tried that yet but every time I switch on the camera, the lens now seems to work fine. I will clean the connectors and give it a shot and bring the 12-35 with me as backup. The job I need the lens for is static portraits, so no run 'n gun and chances of missing the moment... __________________ www.imaginevideo.nl Just published the second of my viral mini-doc series '100' https://youtu.be/ZqHFBrV-oOc

September 19th, 2016, 05:29 AM	#4
Waldi Krasowski Regular Crew Join Date: Dec 2008 Location: Poland Posts: 106	Re: Lumix 42.5 lens connector issues At the back of the contact unit there is ribbon, flex cable - sometimes poorly soldered.