Nikon D70 LCD Display Dead pixel

Jer wrote:
[]
Yessir, it do. And I imagine the mapping of dead parts of the sensor
is a factory service issue. Just as well, because I don't think I can
count spots that small, but it'd be fun to watch them do it.

Glad to help!

On some cameras, you can map the dead pixels yourself - for example on my
Coolpix 990 and 5700 there is a function in the firmware which does the
job. Whilst you can't get at the function from the menus, you /can/ via
computer control and there are free programs which enable this. It takes
a few tens of seconds.

Other cameras may need to be sent back to the manufacturer, yet others
have it as a menu function. You might want to remap dead pixels perhaps
every 6 to 24 months, as the sensor ages.

Cheers,
David

Jer wrote:
[]
Yessir, it do. And I imagine the mapping of dead parts of the sensor
is a factory service issue. Just as well, because I don't think I can
count spots that small, but it'd be fun to watch them do it.

Glad to help!

On some cameras, you can map the dead pixels yourself - for example on my
Coolpix 990 and 5700 there is a function in the firmware which does the
job. Whilst you can't get at the function from the menus, you /can/ via
computer control and there are free programs which enable this. It takes
a few tens of seconds.

Other cameras may need to be sent back to the manufacturer, yet others
have it as a menu function. You might want to remap dead pixels perhaps
every 6 to 24 months, as the sensor ages.

Cheers,
David

On Sun, 17 Oct 2004 08:37:58 -0500, Jer wrote:

dj_nme wrote:

Jer wrote:

David J Taylor wrote:

Michael Schnell wrote:

A certain number of dead pixels in the display is allowed on many
cameras - check the specification.


A certain number of dead pixels in the _sensor_ are standard. They
are hidden by the firmware of the camera.

-Michael




Agreed - the allowed dead pixels in the display are /not/ hidden, of
course.

Cheers,
David



hmmm... colour me confused... if dead sensor pixels are hidden by
the firmware, how can these same dead pixels still be viewable in the
EVF and/or LCD? What have I missed?


That the dead pixels are in the LCD itself and you can't hide that in
the firmware.
It's in plain sight on the back of the camera body!


Ohhhhkaaaay... (slapping forhead) THAT's the important part I missed.

Thanks.

Maybe they'll make special re-mapped glasses that you have to wear
when looking at the LCD to sort it out, or have your eyeballs
calibrated by laser.

--
Owamanga!

On Sun, 17 Oct 2004 08:37:58 -0500, Jer wrote:

dj_nme wrote:

Jer wrote:

David J Taylor wrote:

Michael Schnell wrote:

A certain number of dead pixels in the display is allowed on many
cameras - check the specification.


A certain number of dead pixels in the _sensor_ are standard. They
are hidden by the firmware of the camera.

-Michael




Agreed - the allowed dead pixels in the display are /not/ hidden, of
course.

Cheers,
David



hmmm... colour me confused... if dead sensor pixels are hidden by
the firmware, how can these same dead pixels still be viewable in the
EVF and/or LCD? What have I missed?


That the dead pixels are in the LCD itself and you can't hide that in
the firmware.
It's in plain sight on the back of the camera body!


Ohhhhkaaaay... (slapping forhead) THAT's the important part I missed.

Thanks.

Maybe they'll make special re-mapped glasses that you have to wear
when looking at the LCD to sort it out, or have your eyeballs
calibrated by laser.

--
Owamanga!

On Mon, 18 Oct 2004 09:28:48 GMT, "David J Taylor"
wrote:

Jer wrote:
[]
Yessir, it do. And I imagine the mapping of dead parts of the sensor
is a factory service issue. Just as well, because I don't think I can
count spots that small, but it'd be fun to watch them do it.

Glad to help!

On some cameras, you can map the dead pixels yourself - for example on my
Coolpix 990 and 5700 there is a function in the firmware which does the
job. Whilst you can't get at the function from the menus, you /can/ via
computer control and there are free programs which enable this. It takes
a few tens of seconds.

Other cameras may need to be sent back to the manufacturer, yet others
have it as a menu function. You might want to remap dead pixels perhaps
every 6 to 24 months, as the sensor ages.

Cheers,
David

There is a similar function on the D70 to deal with sensor dust (a
problem with DSLRs) which would probably also handle the dead pixels
issue but I haven't investigated this fully.

--
Owamanga!

On Mon, 18 Oct 2004 09:28:48 GMT, "David J Taylor"
wrote:

Jer wrote:
[]
Yessir, it do. And I imagine the mapping of dead parts of the sensor
is a factory service issue. Just as well, because I don't think I can
count spots that small, but it'd be fun to watch them do it.

Glad to help!

On some cameras, you can map the dead pixels yourself - for example on my
Coolpix 990 and 5700 there is a function in the firmware which does the
job. Whilst you can't get at the function from the menus, you /can/ via
computer control and there are free programs which enable this. It takes
a few tens of seconds.

Other cameras may need to be sent back to the manufacturer, yet others
have it as a menu function. You might want to remap dead pixels perhaps
every 6 to 24 months, as the sensor ages.

Cheers,
David

There is a similar function on the D70 to deal with sensor dust (a
problem with DSLRs) which would probably also handle the dead pixels
issue but I haven't investigated this fully.

--
Owamanga!

Owamanga wrote:
[]
There is a similar function on the D70 to deal with sensor dust (a
problem with DSLRs) which would probably also handle the dead pixels
issue but I haven't investigated this fully.

I would have thought that the two issues were different - the dust can be
removed mechanically whereas the dead pixel removal requires an electronic
measurement and subsequent update of the internal dead pixel map.

Cheers,
David

Owamanga wrote:
[]
There is a similar function on the D70 to deal with sensor dust (a
problem with DSLRs) which would probably also handle the dead pixels
issue but I haven't investigated this fully.

I would have thought that the two issues were different - the dust can be
removed mechanically whereas the dead pixel removal requires an electronic
measurement and subsequent update of the internal dead pixel map.

Cheers,
David