uh-oh weird M9 artifact.

faneuil

faneuil

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just bought a mint used M9 and after a few days noticed a few frames with this band / blocky artifact. Only happened when I was shooting rapidly.
what is going on?

Eric
 

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and for that matter, what causes white dot artifacts? Black dots are obviously dirt on sensor or back of lens, but white dots? This only appeared fully stopped fown at infinity with noctilux pointed to sky. This is an enlarged portion of the image.

Eric
 

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LOLLOL! Y'know what. I forgot it was snowing ever so slightly!
Oy the gruesome OCD of Leica love..
Go sensor go sensor...

!ERIC
 
The black dots are dust on the sensor, that's why they only appear when you're stopped down enough to get them in focus. Otherwise they are too blurred to see. You can clean it with an air blower like the Giottos Rocket, or you can buy a sensor cleaning kit online. DON'T clean it with canned/compressed air.
 
thanks.. but I mean the weird block rectangle artifact. in the lower part of the frame. I hope it is a SD card problem, but that card worked fine in my previous M8 and M8.2

Eric
 
Is this the only time you got such an artefact? It is certainly the first time I saw one like that, so I tend to suspect some kind of SD card error. The black dots are just a dirty sensor.
 
Roberto V. said:
The black dots are dust on the sensor, that's why they only appear when you're stopped down enough to get them in focus. Otherwise they are too blurred to see. You can clean it with an air blower like the Giottos Rocket, or you can buy a sensor cleaning kit online. DON'T clean it with canned/compressed air.
Click to expand...

The appearence of dust on the sensor is not affected by the aperture used :eek:
 
bottley1 said:
The appearence of dust on the sensor is not affected by the aperture used :eek:
Click to expand...
The presence of dust is indeed not. However, the visibility of the dust on the image is certainly affected by the aperture.- Sorry, I see Derek said the same.
 
I've had the same issue. I get odd artifacts occasionally, but rarely. I've had one similar to yours, once. I wouldn't worry about it unless it's happening often. There are many things that can affect it, but I don't worry, which is always why I shoot a few frames of everything and check the LCD for confirmation.
 
leicashot said:
I've had the same issue. I get odd artifacts occasionally, but rarely. I've had one similar to yours, once. I wouldn't worry about it unless it's happening often. There are many things that can affect it, but I don't worry, which is always why I shoot a few frames of everything and check the LCD for confirmation.
Click to expand...

But that is not how you are supposed to use a Leica :angel:

I have to give it to a lot of Leica M9 owners, you are a forgiving bunch of people.
 
Well, it should make you happy that I rarely check the LCD, just for exposure on the histogram at the beginning of light conditions and basically use it like an M6...
 
An aquantence of mine when he first aquired the M9 got blocky artifacts almost immediately on on many shots. he was using a Sandisk card (yes I know there are many Sandisk counterfits out there) that he used on all other digital cameras previously without a hitch. First thing I told him is to get a compeletly different card, both brand, size sped etc. he did and artifacts completly disapperaed, not to return, as far as I know. I've heard this happening with others, so thats the first thing I would try (changing to a completely different card, including the brand), to this out. One other thing is it appears that although the M9 is not a speed demon when it comes to read/write speeds, a very7 slow card aslo causes these types of issues.

Dave (D&A)
 
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