My Brand-New Panasonic Lumix L10 Already Has Sensor Dust

My Panasonic Lumix L10 is only a few weeks old, and it already has sensor dust.

I confirmed it by photographing a clear blue sky using all four of the camera’s aspect ratios. A dark curved mark appears in the 3:2 and 16:9 images but is cropped out in 4:3 and 1:1.

Normally, sensor dust is an annoyance I can handle myself. The L10 has a permanently attached lens, however, so I cannot access the sensor. I have submitted a warranty claim and sent the camera to Panasonic for service.

That is especially disappointing because sensor dust was already one of the concerns surrounding the L10.

The original Panasonic Lumix LX100 developed a reputation for dust getting inside the fixed-lens camera and appearing on the sensor. Panasonic said the design was improved for the LX100 II, but reports did not disappear completely. Similar concerns have also been raised by some Leica D-Lux 8 owners.

The L10 uses the same general type of retractable fixed zoom lens, so photographers were already wondering whether the old problem could return.

On my camera, it has.

How I Discovered the Dust

I first noticed the dark mark in a photograph with a clear sky near the upper-right side of the frame.

After cleaning and checking the front of the lens, I took test photographs using all four of the L10’s aspect ratios:

• 4:3
• 3:2
• 16:9
• 1:1

The mark appears clearly in the 3:2 and 16:9 images. It does not appear in the 4:3 or 1:1 images. That makes sense because of the L10’s multi-aspect sensor.

The different aspect ratios do not simply crop down from the exact same image area. The wider 3:2 and 16:9 formats use more of the sensor’s horizontal area. The dust appears to be located near the far-right edge of the sensor, where it is included in the wider formats but cropped out in 4:3 and 1:1.

This explained why I was only seeing the mark in certain images.

The LX100 Sensor-Dust History

Concern about sensor dust in this type of camera did not begin with the L10.

The original Panasonic Lumix LX100 combined a relatively large Four Thirds sensor with a fast 24–75mm equivalent f/1.7–2.8 retractable zoom lens. It was an appealing design, but some owners reported dust getting inside the camera and appearing on the sensor.

Because the lens was permanently attached, owners could not clean the sensor themselves and the camera required service.

When Panasonic introduced the LX100 II, the company said the original LX100’s collapsible lens design made it more susceptible to dust and that the newer camera had been improved, suggesting Panasonic was aware of the concern and had taken steps to reduce it.

However, owner reports involving dust did not disappear completely. Some LX100 II users still reported internal dust, and similar reports have appeared from some Leica D-Lux 8 owners.

That does not prove that most LX100 II or D-Lux 8 cameras are affected. Online reports tend to concentrate problems, and there is no reliable public information showing how common the issue is.

Still, the history was enough to make photographers cautious when Panasonic announced the L10.

The L10 again uses a Four Thirds sensor paired with a fixed, retractable 24–75mm equivalent f/1.7–2.8 zoom lens. Even if the internal design is not identical, the similarities naturally brought the old dust concern back into the discussion.

Why Dust Is a Bigger Problem on the L10

Sensor dust is not unusual on interchangeable-lens cameras.

With my OM System cameras, I can remove the lens and use a blower or perform a careful sensor cleaning if necessary.

The L10 is different.

Because the lens is permanently attached, any internal dust requires professional service. A problem that might take only a few minutes to address on another camera now requires a warranty claim, packing the camera and sending it to a service center.

That is particularly frustrating because the L10 is a new premium camera.

One of the advantages of a fixed-lens camera is convenience. There are no lenses to change, and the camera is designed to be ready whenever I turn it on.

That convenience disappears quickly when internal dust requires professional service.

Warranty Claim and Sending the L10 In for Service

I registered the L10 after purchasing it and submitted a warranty-service request to Panasonic.

Panasonic responded with a service ticket and shipping instructions. The process itself was straightforward. I received a service number, instructions to package the camera carefully, and a request to ship the camera to their service center within 45 days. Panasonic also requested that I include only accessories related to the problem and use a carrier with tracking information.

However, one part of the process was disappointing.

Because this was a warranty repair on a brand-new camera, I expected Panasonic would provide a prepaid shipping label. Instead, I was responsible for the shipping cost. Panasonic also states that they are not responsible for damage during transit, so I added insurance coverage to protect a nearly $1,500 camera while it was being shipped.

I realize many companies handle returns differently, and perhaps I have been spoiled by the convenience of retailers like Amazon. Still, it was frustrating to incur additional shipping and insurance costs on a camera that required warranty service so early in its life.

The bigger concern was the ownership experience. A fixed-lens camera is designed for simplicity and convenience, yet a problem I could not resolve myself required packing the camera, paying for shipping and insurance, and sending it away for service.

Warranty Update: Panasonic Replaced the Lens Unit

Panasonic completed the repair under warranty.

I shipped the L10 on August 6, and Panasonic received it on August 10. After I requested a status update on August 21, Panasonic told me a part had been ordered. Later that same day, I received notice that the repair was complete and the camera was being shipped back.

According to the repair invoice, Panasonic replaced the lens unit and grip kit rather than cleaning the camera.

Panasonic did not provide a detailed diagnosis, so I cannot say exactly what caused the problem. However, replacing the lens unit makes this look more like a possible manufacturing or component issue with my particular camera than clear evidence of a broader L10 design problem allowing dust into the camera.

The repair was covered by warranty, although I was still responsible for the original $62.88 shipping and insurance cost.

Unfortunately, the warranty repair introduced a new, more prominent dark spot in a different location. Unlike the original mark, which appeared only in the 3:2 and 16:9 aspect ratios, the new spot is visible in all four aspect ratios. I am now working with Panasonic and its authorized repair provider to have the camera corrected again. Stay tuned for a separate blog post on my Panasonic Lumix warranty-service experience, including the original repair, shipping costs, communication, and what happens with this second repair.

Should L10 Owners Be Concerned?

It is still too early to know whether my camera represents a broader L10 problem.

Panasonic did not provide a detailed diagnosis, but the warranty repair included replacement of the lens unit and grip kit. That makes a manufacturing or component issue with my particular camera a plausible explanation, rather than evidence of a broader design problem allowing dust into the camera.

I also cannot determine when the problem first became visible. I went back through my saved L10 photographs and did not find clear evidence of the mark. However, I did not have any saved images using the wider 3:2 or 16:9 aspect ratios where the mark was visible, so it could have been present earlier but gone unnoticed.

For now, I would not conclude from my experience alone that L10 owners should expect a dust problem. However, owners may still want to test their cameras using all four aspect ratios. A mark near the outer edge of the imaging area could be invisible in 4:3 but appear in 3:2 or 16:9.

The test is simple. Photograph a clear sky or evenly lit light-colored surface at a smaller aperture, such as f/16, and examine each image on a larger screen. Look for a dark mark that remains in the same location.

Final Thoughts

I still enjoy using the Lumix L10, and this does not erase everything I like about the camera.

Its compact size, fast zoom lens, multi-aspect sensor, autofocus, articulating screen and extensive customization make it a very capable travel and everyday camera.

But finding sensor dust after only a few weeks is difficult to overlook.

The fixed lens is one of the reasons the L10 is so convenient to carry and use. It is also the reason I cannot solve this problem myself.

Whether this is simply an isolated issue or something that affects more L10 cameras will take time to understand.

Want to Learn More About the Panasonic Lumix L10

• What I Like and Don’t Like About the Panasonic Lumix L10
• How to Get the Most from the Panasonic Lumix L10 Function Switch
• Panasonic Lumix L10 vs OM System OM-5 II: Which Is the Better Micro Four Thirds Travel Camera?