What do you think these spots are?

[mexipike]

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!

 

[sevo]

What lenses and what apertures are involved?

 

[benmacphoto]

Dust on the sensor.

 

[Huss]

Sensor corrosion. Exactly how mine looked.

 

[mexipike]

What lenses and what apertures are involved?

35 sumarit asph probable around f8 or so.

 

[mexipike]

Sensor corrosion. Exactly how mine looked.

Did you have it replaced? What was the turnaround time?

 

[kbg32]

It just looks like sensor dirt. Did you try to clean the sensor?

 

[mexipike]

No, I haven't yet. I'll try tonight. What's the preferred method? I have some pec pads and fluid.

 

[kbg32]

No fluid! Have you tried "Visible Dust"? I sue the Arctic Butterfly. Works great!

 

[icebear]

First picture is dirt all over (irregular size spots), second picture shows signs of sensor corrosion in the upper right corner (circles).

 

[mexipike]

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.

 

[Tom Parkes]

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.

 

[mexipike]

Just to update, after sending the camera to Leica they confirmed it was corrosion. After a very long time I upgraded to the 246