What do you think these spots are?
Old 10-01-2015   #1
mexipike
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What do you think these spots are?

I have the 18mp leica Monochrom and have been noticing spots at the top corners of my images. Yesterday I was thinking it was just dust on the lens as it was quite dusty when I looked at it but I noticed the same spots from an image a moth or so ago. I also thought maybe it's just on the sensor but I can't tell anything obvious on the sensor under a light (but of course I understand that wouldn't rule it out. I'm attaching two processed images as that's what I have on hand right now and how you can see them the best.

Let me know what you think it could be. From what I can tell it's not the "sensor issue" but I guess it's possible. I have found sites showing what that should look like but haven't seen anything on what it would look like on the MM.

Thanks for looking!


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Old 10-01-2015   #2
sevo
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What lenses and what apertures are involved?
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Old 10-01-2015   #3
benmacphoto
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Dust on the sensor.
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Old 10-01-2015   #4
Huss
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Sensor corrosion. Exactly how mine looked.
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Old 10-01-2015   #5
mexipike
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Quote:
Originally Posted by sevo View Post
What lenses and what apertures are involved?
35 sumarit asph probable around f8 or so.
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Old 10-01-2015   #6
mexipike
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Quote:
Originally Posted by Huss View Post
Sensor corrosion. Exactly how mine looked.
Did you have it replaced? What was the turnaround time?
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Old 10-01-2015   #7
kbg32
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It just looks like sensor dirt. Did you try to clean the sensor?
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Old 10-01-2015   #8
mexipike
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No, I haven't yet. I'll try tonight. What's the preferred method? I have some pec pads and fluid.
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Old 10-01-2015   #9
kbg32
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No fluid! Have you tried "Visible Dust"? I sue the Arctic Butterfly. Works great!
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Old 10-02-2015   #10
icebear
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First picture is dirt all over (irregular size spots), second picture shows signs of sensor corrosion in the upper right corner (circles).
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Old 10-02-2015   #11
mexipike
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I have a BrushOFF sensor cleaning brush on it's way. I'll get it nice and cleaned up when it arrives and then go from there.
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Old 10-02-2015   #12
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To me, the second one looks more like the spots you get from lubricant flying up off the shutter mechanism of some cameras. I wouldn't rush to assume it was corrosion without trying a wet clean.
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Old 1 Week Ago   #13
mexipike
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Just to update, after sending the camera to Leica they confirmed it was corrosion. After a very long time I upgraded to the 246
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