2 dead pixel - where? on CCD!!!
- Thread starter gadrian
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NorthernLights
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gadrian said:Hi all,
My Cam has been fixed.. it cost me 0.00 SGD.. hehe.. coz it is still under warranty..
The reason was that I do a lot of long duration exposures.. and this had cause some of the photo sensors on the CCD.. to cancel themself out. Nikon did a reset/calibrate of the CCD and the problem disappeared..
They amazingly managed to get rid of almost all my dust specks as well..
This is where Olympus has the edge...called pixel mapping....no need for going to the Service Centre...just a press of button....
Nikon needs to improve on this....pixel mapping was already a feature on the E20... :think:
NorthernLights said:
Well I think it not really a problem.. what Nikon lacks in some features.. or advances.. it makes up in other things.. anyway.. it was a fun day at Nikon service center.. had a great time..
Service people there are rather obliging.. and I made a couple of new friends from other Nikon users that were there..
All in all a worthwhile "inconvenience" trip..
Beachboy said:
Actually, gadrian had a good experience at Nikon SG, but I had a disturbing one.
I shoot freelance, and cannot afford to have my body out of my hands for too long. My D100 is suffering from a major dust problem (sandwiched btw the AA filter and the CCD) and needs to be dismantled. The technician servicing my camera yesterday displayed a very 'bo chup' attitude, with no interest in serving a customer.
There are some technicians in Nikon SG who are very proficient, and helpful. But there are also those who 'blemish' the reputation.
Anyway, it all ended well with a loan set from Nikon, and my precious is in hospital for a week. :cry:
gadrian said:Hi all,
My Cam has been fixed.. it cost me 0.00 SGD.. hehe.. coz it is still under warranty..
The reason was that I do a lot of long duration exposures.. and this had cause some of the photo sensors on the CCD.. to cancel themself out. Nikon did a reset/calibrate of the CCD and the problem disappeared..
They amazingly managed to get rid of almost all my dust specks as well..
Hi gadrian,
Glad that you got your baby fixed.
But will it happen again after you do many long exposures again ? Is there a way to DIY the reset/calibration ?Does anyone know if there's a minimum no. of dead pixels before Nikon replaces the CCD ? Like for eg. LCD monitors, 3 dead pixels or less is considered "normal".
Thanks.
coyote said:Hi gadrian,
Glad that you got your baby fixed.
Does anyone know if there's a minimum no. of dead pixels before Nikon replaces the CCD ? Like for eg. LCD monitors, 3 dead pixels or less is considered "normal".
Thanks.
As far as the manual goes.. there is 0 tolerance for dead pixels on the CCD.. meaning if there is even 1 dead pixel.. that they cannot recover by pixel remapping.. they should change it..
Coz it effects image quality.
I'm a beginner who has recently purchased a Canon S1 and the "dead pixel" (didn't know that it was actually called a hot pixel then) (blue in color) appeared in my nightshots after 6 days of usage.
I had to go down to Canon service centre to request for a 1-to-1 exchange because it was still brand new.
My concern is, if doing long exposures will cause hot pixels to appear, how do i make it go away? Is remapping the CCD the ONLY method to resolve the hot pixels? And what will that leave to owners whose have their warranties expired? If the camera specs is built for that kind of setting and capability, what good is it if it cannot capture the image properly?
The manager at the service centre told me that hot pixels is a characteristic of the CCD and its up to the photographer to do his/her own post processing. It makes me wonder whether its worth paying so much for digital cameras yet you have to end up having photoshop your pictures to fix the problem.
I had to go down to Canon service centre to request for a 1-to-1 exchange because it was still brand new.
My concern is, if doing long exposures will cause hot pixels to appear, how do i make it go away? Is remapping the CCD the ONLY method to resolve the hot pixels? And what will that leave to owners whose have their warranties expired? If the camera specs is built for that kind of setting and capability, what good is it if it cannot capture the image properly?
The manager at the service centre told me that hot pixels is a characteristic of the CCD and its up to the photographer to do his/her own post processing. It makes me wonder whether its worth paying so much for digital cameras yet you have to end up having photoshop your pictures to fix the problem.
Actually hot pixels are not at the same spot, they just appear during long exposure because of the electrons charging the sensor, the electrons go haywire and thus a different color appears.
Hot pixels are indeed very common across digital cameras. FMI read this - http://www.nikon.com.sg/TechSupp/KB/TOPFAQ/DeadHotRandom.htm
Hot pixels are indeed very common across digital cameras. FMI read this - http://www.nikon.com.sg/TechSupp/KB/TOPFAQ/DeadHotRandom.htm
espn said:
For me it was always at the same spot for all the night shots i took that evening (7 shots at various ISO settings). I even took another lens cap on shot the very next morning at my office just to make sure, and it was there.
He was actually trying to explain to me that both LCD and CCD has a manufacturing specification tied on, though he couldn't tell me what is the maximum tolerance percentage for the CCD allowable, i couldn't be convinced.
nonetheless, i did managed to get a new set in a day's time after some argument with the front desk staff.
Just to share with u wonderful guys out there.
Discovered dust on CCD and later called nikon service centre to find out what to do. Was told to send in camera and may have to leave my baby (D70) there for 2 days. They assured that cleaning will be free since camera is still under warranty. However I also found out that cleaning CCD would cost S$90 after warranty expires.
Any cost efficient (and safe and also cheap) way to clean CCD after warranty expires? D100 users - how do you solve cleaning problem?
Discovered dust on CCD and later called nikon service centre to find out what to do. Was told to send in camera and may have to leave my baby (D70) there for 2 days. They assured that cleaning will be free since camera is still under warranty. However I also found out that cleaning CCD would cost S$90 after warranty expires.
Any cost efficient (and safe and also cheap) way to clean CCD after warranty expires? D100 users - how do you solve cleaning problem?
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