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Can dust enter the M9 to its sensor when not removing the lens?
Old 4 Weeks Ago   #1
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Can dust enter the M9 to its sensor when not removing the lens?

I have noticed that whenever I return from taking photos at the beach, I detect dust spots on the images. They can be quickly removed, but I wonder how dust creeps into the M9 when I make sure not to remove the lens while I am at the beach. Could it be that the dust got in days earlier when I was at home and where I may have changed lenses, and that I just paid extra attention to the beach images as I have experienced before dust on images when replacing a lens while at the beach?

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Old 4 Weeks Ago   #2
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Quote:
Originally Posted by raid View Post
I have noticed that whenever I return from taking photos at the beach, I detect dust spots on the images. They can be quickly removed, but I wonder how dust creeps into the M9 when I make sure not to remove the lens while I am at the beach. Could it be that the dust got in days earlier when I was at home and where I may have changed lenses, and that I just paid extra attention to the beach images as I have experienced before dust on images when replacing a lens while at the beach?

Of course!! The camera is not weather or dust sealed...
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Old 4 Weeks Ago   #3
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On the beach, yo probably shoot with a small aperture and have large homogeneous areas in the pictures. These are ideal conditions to notice dust spots that may have been there before, unnoticed. But more dust could get in at the beach, too. After all when focusing, air gets sucked inside a camera.
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Old 4 Weeks Ago   #4
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This is "good to know" that dust can actually get in even when lens is attached to M9. Yes, I often use apertures 8~11~16 with ISO 160 at the beach. Both of your explanations make sense. Thanks. The added risk factor yesterday was a strong wind.
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Old 4 Weeks Ago   #5
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I have read that when removing the lens one should turn off power in the camera....
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Old 4 Weeks Ago   #6
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Even fixed lens cameras get dust on their sensors. Try cleaning that!
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Old 4 Weeks Ago   #7
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Quote:
Originally Posted by Rangefinder 35 View Post
I have read that when removing the lens one should turn off power in the camera....
I try to always turn off the camera before removing the lens at home.
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Old 4 Weeks Ago   #8
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Quote:
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Even fixed lens cameras get dust on their sensors. Try cleaning that!
There you cannot do anything about it other than use PS to remove dots.
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Old 4 Weeks Ago   #9
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Quote:
Originally Posted by raid View Post
I try to always turn off the camera before removing the lens at home.

I don't see how that would make a difference, it's not a live view camera where the sensor is completely exposed when it's on.
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Old 4 Weeks Ago   #10
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Quote:
Originally Posted by Huss View Post
Even fixed lens cameras get dust on their sensors. Try cleaning that!
That is the problem with my Leica x1 !
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Old 4 Weeks Ago   #11
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Quote:
Originally Posted by retinax View Post
I don't see how that would make a difference, it's not a live view camera where the sensor is completely exposed when it's on.
Rangefinder-35 commented on this issue. I replied.
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Old 4 Weeks Ago   #12
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Quote:
Originally Posted by retinax View Post
I don't see how that would make a difference, it's not a live view camera where the sensor is completely exposed when it's on.
When the camera is turned on the sensor creates an electrostatic charge that attracts dust. Even if there is no immediate, direct route for the dust to reach the sensor, if the lens is off it can enter the body. Once in the body dust can migrate to the sensor over time.
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Old 4 Weeks Ago   #13
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I tried nesting a rubber band on the lens to act as a dust deterrent and because what I was seeing was really corrosion I never could conclude that it worked. Seems as though it should have.
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Old 4 Weeks Ago   #14
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Quote:
Originally Posted by newst View Post
When the camera is turned on the sensor creates an electrostatic charge that attracts dust. Even if there is no immediate, direct route for the dust to reach the sensor, if the lens is off it can enter the body. Once in the body dust can migrate to the sensor over time.
The sensor is behind a shutter, made of metal.
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Old 4 Weeks Ago   #15
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At the beach you're more likely to encounter fine particles of silicon dioxide, ie sand, but still dust I guess if we define dust as annoying stuff we would not rather have. I would be extremely cautious cleaning a lens or sensor with granular sand contamination. The Green Clean sensor cleaning kit comes with a vacuum cleaner operating from a can of compressed gas (air I presume) using a Venturi for suction.
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Old 4 Weeks Ago   #16
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I have been living here for the past 32 years, and my camera equipment looks still fine to me. I use a blower.
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Old 4 Weeks Ago   #17
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Quote:
Originally Posted by raid View Post
I have noticed that whenever I return from taking photos at the beach, I detect dust spots on the images. They can be quickly removed, but I wonder how dust creeps into the M9 when I make sure not to remove the lens while I am at the beach. Could it be that the dust got in days earlier when I was at home and where I may have changed lenses, and that I just paid extra attention to the beach images as I have experienced before dust on images when replacing a lens while at the beach?


Does the phenomenon of dust on the sensor also appear on your Leica M8 camera?
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Old 4 Weeks Ago   #18
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Less frequently on the M8 but this is most likely due to using M8 less often.
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Old 4 Weeks Ago   #19
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Fwiw. I definitely have dust finding its way in, no matter how careful I may be. Still pays to follow sensible protocols to substantially cut the amount of dust I suffer. It has never /rarely been that bad.
Corrosion was something altogether different -- took care of that just squeaking under the free sensor service deadline 😌
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