.ken
I like pictures
So here's a game ... m4/3 owned the camera for 2 months from purchase and noticed this weird build up on the sensor. I tried shooting from f2.8 to f22 and none of the images seem to be affected... tried focusing infinity and close focus. But it has me worried... it's very faint and only noticeable in weak lighting such as desk lamp. If you try to look at it outdoors in bright light it's hardly even there.
If it under warranty, I would send it in for repair.
kzphoto
Well-known
It looks like condensation or crystallization of some kind. I would proceed exactly how Brian prescribed. However, it is interesting.
FrankS
Registered User
A silicon-based life-form? 
dogberryjr
[Pithy phrase]
They told you not to feed it after midnight.
imokruok
Well-known
Weird mold, perhaps? I've seen mold grow in lines like that before.
But you didn't mention if you'd seen it get worse, so my guess would be that it's a manufacturing defect.
But you didn't mention if you'd seen it get worse, so my guess would be that it's a manufacturing defect.
sepiareverb
genius and moron
what exactly are you doing with this camera?
shiro_kuro
Charles Bowen
looks like Japanese Kanji for okamura / okabaiyashi .... perhaps the kid in your sig smoking a cig was having some fun with a sharp pointed object ....
or its sensor fungus
or its sensor fungus
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Flinor
Well-known
It looks a lot like the fungus I've seen on old lenses, but this is too new for fungus to be that advanced.
Luna
Well-known
Its just a few scratches, no biggie.
fbf
Well-known
looks like you might have mounted some lenses (adapted) that you are not suppose to.
Doesn't look like fungus
Doesn't look like fungus
zasonlam
Newbie
As a biologist, I would say these are fungi
bronney
Established
It is definitely fungus. You need to keep these goodies in an environment at or under 50% relative humidity if you're in a humid country.
Sparrow
Veteran
A silicon-based life-form?
It's life, Captain, but not life as we know it
this wouldn't happen with film of course, cos film is, as we know ... dead
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Avotius
Some guy
That is really weird! Fungus can grow on a sensor? Guess it makes sense, it grows on polished lens surfaces why would it not grow on the cover glass of a sensor....still......weird.....
SteveM_NJ
Well-known
I'd try to have it corrected. (still under warranty?)
If it is this "bad" at only 2 months, think of the years ahead.
"potential for future growth"
If it is this "bad" at only 2 months, think of the years ahead.
"potential for future growth"