Pink dots on the sensor at DVinfo.net

Go Back   DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Alpha and NEX Camera Systems > Sony NEX-EA50 (all variants)

Sony NEX-EA50 (all variants)
Including NEX-EA50UH / EA50EH / EA50H / EA50UK / EA50EK / EA50K


Reply
 
Thread Tools Search this Thread
Old July 22nd, 2013, 07:42 AM   #1
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Pink dots on the sensor

Hello to all,

Has anyone else heard of this problem and have any idea what might be causing it. I have a number of pink dots on my sensor, as if my little girl has put pink felt tip pen on it. She obviously hasn't but that is what it looks like. I have checked with different lenses and the problem is still there. If you point the camera at a white wall, you see the pink dots quite clearly. Help! Does anyone know what I can do to rectify this problem or clean the sensor?
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 08:03 AM   #2
Inner Circle
 
Join Date: Jul 2009
Location: Perth, Western Australia
Posts: 8,222
Re: Pink dots on the sensor

Hi James

Noa had dirt on his sensor so firstly read this thread

Dirt on sensor

I just checked both my sensors and they definitely don't have pink dots on them!! I also did a quick search and they seem to be common on still cameras where the owners have done long exposures especially at the sun. They seem to be called either hot pixels or stuck pixels and usually need the sensor replaced. Keep us updated but I would do a clean first.

Chris
Chris Harding is offline   Reply With Quote
Old July 22nd, 2013, 08:39 AM   #3
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

Believe me, I don't think this is dirt, I reckon it is something to do with pixels!
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 09:33 AM   #4
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

Here are the dots for you all to see.
Attached Thumbnails
Pink dots on the sensor-pink-dots.jpg  
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 09:48 AM   #5
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,066
Re: Pink dots on the sensor

That's no dirt on the sensor, I have managed to keep my sensor clean untill now by using that arctic butterfly thing before every shoot but what I see here looks more like a sensor problem, the camera needs to be send in I think. Has the sensor been exposed to direct sunlight for a longer period? Or maybe some laser lights? Just guessing.
Noa Put is offline   Reply With Quote
Old July 22nd, 2013, 10:44 AM   #6
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

Don't think it is dirt.

Last edited by James Hollingsworth; July 23rd, 2013 at 03:44 AM.
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 11:20 AM   #7
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

Still no idea what caused it.

Last edited by James Hollingsworth; July 23rd, 2013 at 03:43 AM.
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 11:20 AM   #8
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,066
Re: Pink dots on the sensor

That doesn't sound very promising, I"m also not sure if this is covered in the warranty as it's not a camera malfunction but caused by external factors. I only hope for you it won't be such a case because otherwise you"ll be looking at a expensive repair if the sensor needs to be replaced, let's hope Sony can fix it by just resetting something in the soft- or hardware..
Noa Put is offline   Reply With Quote
Old July 22nd, 2013, 11:22 AM   #9
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,066
Re: Pink dots on the sensor

Quote:
Originally Posted by James Hollingsworth View Post
Here is 30 seconds or so of the footage that might have caused the problem
Yup, I"m almost sure that's what did it.
Noa Put is offline   Reply With Quote
Old July 22nd, 2013, 11:37 AM   #10
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

I guess this guy's mythbusting must be wrong then:

James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 12:01 PM   #11
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,066
Re: Pink dots on the sensor

There is quite a few examples on vimeo and-/or youtube showing exactly the opposite what this guy is claiming with clear damage to the sensor, I"m sure it must have to do with the intensity of the beam, I also read reports from people with damaged eye sight after been exposed to a strong laserlight.

see here:
http://www.youtube.com/results?searc...be.MtQS1osK2MU
Noa Put is offline   Reply With Quote
Old July 22nd, 2013, 12:27 PM   #12
Regular Crew
 
Join Date: Apr 2008
Location: Torres, Brazil
Posts: 115
Re: Pink dots on the sensor

Quote:
Originally Posted by James Hollingsworth View Post
I guess this guy's mythbusting must be wrong then:
judging by the blooming, its a CCD sensor, so different technology from EA50 CMOS
Marlon Martins is offline   Reply With Quote
Old July 22nd, 2013, 04:00 PM   #13
Regular Crew
 
Join Date: Mar 2013
Location: Leicester
Posts: 108
Re: Pink dots on the sensor

I feel seriously let down by this incident, I wonder if all the other people in the room that were videoing the event on their iPhones, ipads and handicams had the same problem - I think not. It's not like I pointed the light at the lens or pointed the camera at the sun. There is something seriously wrong here, so beware all EA50 users. To quote another user, 'All that is gold definitely does not shine'
James Hollingsworth is offline   Reply With Quote
Old July 22nd, 2013, 04:06 PM   #14
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,066
Re: Pink dots on the sensor

pls let us know how it turns out (I guess you'r sending the camera in for repair now?)
Noa Put is offline   Reply With Quote
Old July 22nd, 2013, 08:19 PM   #15
Inner Circle
 
Join Date: Jul 2009
Location: Perth, Western Australia
Posts: 8,222
Re: Pink dots on the sensor

That is a bit scary! On your footage James, you do see quite an intense flash (sorta like a white laser or strobe) I wonder if that was the issue?

As I do stills too and have two Nikon DSLR's there were quite a few posts on Nikon forums about both pink dots and red dots and those were mainly caused by exposing the sensor for too long at a single light source.

I guess when we do the dancing we had better keep our backs to the DJ's lighting kit at all times. It will be interesting to discover what the cause was so it can be avoided in the future.

Good luck

Chris
Chris Harding is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Sony XAVC / XDCAM / NXCAM / AVCHD / HDV / DV Camera Systems > Sony Alpha and NEX Camera Systems > Sony NEX-EA50 (all variants)

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 01:09 AM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network