Stuck Pixels

[Anthony MD]

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Noticed stuck blue pixels on the upper part of the image taken with the MD 262.  I usually shoot clouds that would cover them.  Lately only clear skies here brought them out. Called Leica in New Jersey and they informed me pixel mapping was done in 2022 by Leica Germany for the previous owner.

Does this happen on a regular basis in your experience with Leica cameras…?

Edited October 22, 2024 by Anthony MD

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[pippy]

11 hours ago, Anthony MD said:

Noticed stuck blue pixels on the upper part of the image taken with the MD 262...Does this happen on a regular basis in your experience with Leica cameras…?

Never. Hope that helps!

P.

Edited October 22, 2024 by pippy

[jdlaing]

11 hours ago, Anthony MD said:

Noticed stuck blue pixels on the upper part of the image taken with the MD 262.  I usually shoot clouds that would cover them.  Lately only clear skies here brought them out. Called Leica in New Jersey and they informed me pixel mapping was done in 2022 by Leica Germany for the previous owner.

Does this happen on a regular basis in your experience with Leica cameras…?

Can you post an un cropped image?

[Anthony MD]

1 hour ago, jdlaing said:

Can you post an un cropped image?

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

They are hard to see since both the sky and stuck pixels are almost the same color.  You’ll need to zoom in to see them…!

 

 

Do you see them now…?

Edited October 23, 2024 by Anthony MD

[jdlaing]

I don’t see hot pixels but I see a lot of dirt on the sensor.

[Anthony MD]

20 minutes ago, jdlaing said:

I don’t see hot pixels but I see a lot of dirt on the sensor.

Those are stuck pixels because they are in the same position on every shot.  In fact they are blue.  Dirt would be black…!

Edited October 23, 2024 by Anthony MD

[fotomas]

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Looks like dirt on the sensor to me. Way to large or a single pixel and also without the shape of a pixel. Run the dust detection. 

[jdlaing]

8 hours ago, Anthony MD said:

Those are stuck pixels because they are in the same position on every shot.  In fact they are blue.  Dirt would be black…!

I doubt it. Dirt spots would be in the same place ever time as well. Needs a cleaning.

[Anthony MD]

But why are they blue…?

[LocalHero1953]

Greasy mark (semi-transparent), or out-of-focus dust speck (blurred and merging with the background).

I agree: too big for single pixels, and they look exactly like all the dust spots I've had.

[Anthony MD]

Your learn something everyday …📷

[pippy]

1 hour ago, Anthony MD said:

But why are they blue…?

Because unless the dirt is opaque they darken whichever colour is trying to be captured. Shoot, say, a yellow sheet of paper and the spots will be dark yellow. If the dirt IS opaque then the dots will be either dark grey or black.

As has been said already it really is just a dirty sensor.

Philip.

Edited October 23, 2024 by pippy

[Anthony MD]

5 hours ago, jdlaing said:

I doubt it. Dirt spots would be in the same place ever time as well. Needs a cleaning.

 

2 hours ago, pippy said:

Because unless the dirt is opaque they darken whichever colour is trying to be captured. Shoot, say, a yellow sheet of paper and the spots will be dark yellow. If the dirt IS opaque then the dots will be either dark grey or black.

As has been said already it really is just a dirty sensor.

Philip.

I can live with a dirty sensor and will not take the chance of ruining it by cleaning it myself…!

[jdlaing]

5 hours ago, Anthony MD said:

But why are they blue…?

At that magnification, depending on the dirt, semi translucent.

[Anthony MD]

Now I understand, thanks everyone…!

[Jean-Michel]

Hi,

You do have a dirty sensor, and you can quite easily clean it, no damage will occur unless you are truly careless about the job. 

Your camera has a menu for dust detection, it will show pretty much where the dust resides. In you case, it is very probable that there are all sorts of spots all over. You will likely ned to use a swab or two to get rid of it. Do remember that what you see at the top of the image is at the bottom of the sensor — up/down, left/right.

Dust spots are inevitable, spend time cloning them out, or simply clean them off first.

In a thread from  few days ago, I posted the following:

I once was in London and managed to get my sensor rather filthy — and had not packed my basic cleaning set with me. Went to the Leica store there and they cleaned it while I went acres the street to their cafe/gallery. Very pleasant staff on both sides of the street.

As to doing your own cleaning, it is quite easy, unless you decide to use sandpaper! See this video from Nick Rains from Australia: 

 

I personally use the Visibledust tools: start with a basic good quality blower then, if needed, the Arctic Butterfly brush, and is there are still stubborn spots then pads and cleaning solution. You do need to use adequate care in doing the cleaning, but it pretty much just applying common sense to your work — and not try to save a bit of money by re-using the pads. Here is the link to Visibledust; other systems are probably just as effective, but that is what I use on all my cameras, including the SL2

https://www.visibledust.com

 

[Anthony MD]

1 hour ago, Jean-Michel said:

 

Hi,

You do have a dirty sensor, and you can quite easily clean it, no damage will occur unless you are truly careless about the job. 

Your camera has a menu for dust detection, it will show pretty much where the dust resides. In you case, it is very probable that there are all sorts of spots all over. You will likely ned to use a swab or two to get rid of it. Do remember that what you see at the top of the image is at the bottom of the sensor — up/down, left/right.

Dust spots are inevitable, spend time cloning them out, or simply clean them off first.

In a thread from  few days ago, I posted the following:

I once was in London and managed to get my sensor rather filthy — and had not packed my basic cleaning set with me. Went to the Leica store there and they cleaned it while I went acres the street to their cafe/gallery. Very pleasant staff on both sides of the street.

As to doing your own cleaning, it is quite easy, unless you decide to use sandpaper! See this video from Nick Rains from Australia: 

 

I personally use the Visibledust tools: start with a basic good quality blower then, if needed, the Arctic Butterfly brush, and is there are still stubborn spots then pads and cleaning solution. You do need to use adequate care in doing the cleaning, but it pretty much just applying common sense to your work — and not try to save a bit of money by re-using the pads. Here is the link to Visibledust; other systems are probably just as effective, but that is what I use on all my cameras, including the SL2

https://www.visibledust.com

 

Not following your comment that my camera has a menu for dust detection.

The MD 262 has no LCD screen…!

[Anthony MD]

As you can see, my experiences with digital contrast greatly with that of film.

Started with a Leica M3 some 30 years ago whilst going digital just over a year…!

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Hallo,

Look here: Leica M

[a.noctilux]

On 10/24/2024 at 3:02 AM, Anthony MD said:

Not following your comment that my camera has a menu for dust detection.

The MD 262 has no LCD screen…!

No need rear screen.

M-D (typ 262) has "hidden MENU" for cleaning it's sensor.

 

- check if battery is more than 60%

- Put the switch to far left (after C position).

- while holding the function button, trip the shutter

- the sensor is ready for cleaning, in my recent "sensor clean", I  blow air with "air blower", the M-D sensor "open/down".