Dead pixel on D3 DX mode

Cougar159 · 24th February 2008

Noticed I have 2 dead pixel only in DX Mode.
FX mode is completely normal.

Is there something wrong with my D3 image sensor?

Time to go NSC?

crazypaladin · 24th February 2008

If possible, show the picture so that we can advise better. Nevertheless, within the warranty period, can still go to service centre to rectify the problem.

Cougar159 · 26th February 2008

The encircled parts. Any advice?

adamadam · 26th February 2008

Originally Posted by Cougar159

The encircled parts. Any advice?

Yeh look really dead to me!

Cougar159 · 26th February 2008

was told by Nikon Service Engineer that there is no need to replace Sensor.

Only need software re-mapping.

Result will be as good as no dead pixel...

Is it true???

Lmodel · 26th February 2008

Yeah software remapping will be able to solve the problem.

lsisaxon · 26th February 2008

Originally Posted by Cougar159

was told by Nikon Service Engineer that there is no need to replace Sensor.

Only need software re-mapping.

Result will be as good as no dead pixel...

Is it true???

Yeah.. but the information from the dead pixel will be approximated by the adjacent pixels, so you actually lose something.. but it's just one pixel..

Cougar159 · 26th February 2008

Dun quite understand.

If software can fix the issue, then how come my previous Fuji S5 Pro dead pixel, they changed the whole sensor for me?

And will it result in more dead pixel in future?

I am worried cos this is a heavy investment...

Cougar159 · 26th February 2008

And one more thing, are all camera sensors totally free of dead pixel?

Or is it that some are too tiny to be noticed?

And what is the exchange or replacement policy of Nikon for dead pixel from sensor?

crazypaladin · 26th February 2008

Like what lsisaxon had said, software mapping does not rectify the dead pixel. Rather it approximate from the neighbouring pixels what the dead pixel should represent.

I am not too sure about this but u need to have 3 dead pixels to warrant a replacement? U should demand for a sensor replacement.

gooseberry · 26th February 2008

Also, do note that when the cameras come off the production line and undergoing final qc, they are checked for dead/stuck pixels and the dead/stuck pixels are remapped. So even a new camera out of the box may already have had pixels remapped. But I wouldn't worry too much about it - 1, 2 or 3 pixels remapped out of 12 million is an extremely small number.

Cougar159 · 26th February 2008

Thanks for all your help.

Actually I had a good look at a shot I took with the lens cap on before I send the camera for repair. I do notice there are many smaller and fainter dots littered on the black backdrop.

Are they all dead pixels??!!?? If they are, then I have easily more than 5...

I am very sad... what to do...??!!??

lsisaxon · 27th February 2008

Originally Posted by Cougar159

Thanks for all your help.

Actually I had a good look at a shot I took with the lens cap on before I send the camera for repair. I do notice there are many smaller and fainter dots littered on the black backdrop.

Are they all dead pixels??!!?? If they are, then I have easily more than 5...

I am very sad... what to do...??!!??

How many seconds exposure did you take? What ISO? If the exposure is longer than 1s, then those are not hot or dead pixels. Hot or dead pixels will not change in intensity regardless of your exposure time.

Cougar159 · 27th February 2008

Oh I see.

I only notice 2 hot pixel regardless of exposure time or ISO speed. The rest are variable.

So I assume there is only 2 hot pixel in my set?

Cougar159 · 27th February 2008

In addition, can anybody offer an explanation why the dead pixel only appear in DX mode?

In FX mode, the pic is perfectly normal and clean.

longkangman · 27th February 2008

I believe only NSC can explain the differences on FX and DX mode and how the relationship of the pixel in both mode.

lsisaxon · 27th February 2008

Originally Posted by Cougar159

Oh I see.

I only notice 2 hot pixel regardless of exposure time or ISO speed. The rest are variable.

So I assume there is only 2 hot pixel in my set?

Yes, I think you can say that.

lsisaxon · 27th February 2008

Originally Posted by Cougar159

In addition, can anybody offer an explanation why the dead pixel only appear in DX mode?

In FX mode, the pic is perfectly normal and clean.

Check the 5:4 mode? I'm suspecting that the dead pixel map is different for each of the format.

Cougar159 · 27th February 2008

Its really funny...

Only in DX mode.

FX and 5:4 is normal.

KNIGHT ONG · 27th February 2008

Originally Posted by Cougar159

Its really funny...

Only in DX mode.

FX and 5:4 is normal.

That is interesting ,,,,

24th February 2008	#1
Cougar159 Member Join Date: Nov 2003 Posts: 267	Dead pixel on D3 DX mode Noticed I have 2 dead pixel only in DX Mode. FX mode is completely normal. Is there something wrong with my D3 image sensor? Time to go NSC?

24th February 2008	#2
crazypaladin Member Join Date: Oct 2002 Location: Singapore Central Posts: 748	Re: Dead pixel on D3 DX mode If possible, show the picture so that we can advise better. Nevertheless, within the warranty period, can still go to service centre to rectify the problem.

26th February 2008	#3
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode The encircled parts. Any advice? Last edited by Cougar159; 26th February 2008 at 04:46 PM.

26th February 2008	#5
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode was told by Nikon Service Engineer that there is no need to replace Sensor. Only need software re-mapping. Result will be as good as no dead pixel... Is it true???

26th February 2008	#6
Lmodel Member Join Date: Jun 2005 Location: Jurong Island Posts: 1,125	Re: Dead pixel on D3 DX mode Yeah software remapping will be able to solve the problem.

26th February 2008	#8
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode Dun quite understand. If software can fix the issue, then how come my previous Fuji S5 Pro dead pixel, they changed the whole sensor for me? And will it result in more dead pixel in future? I am worried cos this is a heavy investment...

26th February 2008	#9
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode And one more thing, are all camera sensors totally free of dead pixel? Or is it that some are too tiny to be noticed? And what is the exchange or replacement policy of Nikon for dead pixel from sensor?

26th February 2008	#10
crazypaladin Member Join Date: Oct 2002 Location: Singapore Central Posts: 748	Re: Dead pixel on D3 DX mode Like what lsisaxon had said, software mapping does not rectify the dead pixel. Rather it approximate from the neighbouring pixels what the dead pixel should represent. I am not too sure about this but u need to have 3 dead pixels to warrant a replacement? U should demand for a sensor replacement.

26th February 2008	#11
gooseberry Senior Member Join Date: Mar 2004 Location: Central West Posts: 1,913	Re: Dead pixel on D3 DX mode Also, do note that when the cameras come off the production line and undergoing final qc, they are checked for dead/stuck pixels and the dead/stuck pixels are remapped. So even a new camera out of the box may already have had pixels remapped. But I wouldn't worry too much about it - 1, 2 or 3 pixels remapped out of 12 million is an extremely small number.

26th February 2008	#12
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode Thanks for all your help. Actually I had a good look at a shot I took with the lens cap on before I send the camera for repair. I do notice there are many smaller and fainter dots littered on the black backdrop. Are they all dead pixels??!!?? If they are, then I have easily more than 5... I am very sad... what to do...??!!??

27th February 2008	#14
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode Oh I see. I only notice 2 hot pixel regardless of exposure time or ISO speed. The rest are variable. So I assume there is only 2 hot pixel in my set?

27th February 2008	#15
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode In addition, can anybody offer an explanation why the dead pixel only appear in DX mode? In FX mode, the pic is perfectly normal and clean.

27th February 2008	#16
longkangman Senior Member Join Date: Jul 2005 Location: sewage drain/manhole Posts: 4,959	Re: Dead pixel on D3 DX mode I believe only NSC can explain the differences on FX and DX mode and how the relationship of the pixel in both mode. __________________ Studio TFCD :-)

27th February 2008	#19
Cougar159 Member Join Date: Nov 2003 Posts: 267	Re: Dead pixel on D3 DX mode Its really funny... Only in DX mode. FX and 5:4 is normal.