Nikon D7000 Oil Spots Personal Experience

Started Mar 28, 2012 | Discussions thread
MarkJH
Contributing MemberPosts: 614Gear list
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Re: Thank you
In reply to Sante Patate, Mar 29, 2012

This feels like a CSI crime-scene spatter analysis. I love it!

(1) the spots aren't round because the oil is "flung" and hits the sensor with an angular velocity, causing the resulting smear to assume a slightly oblong or irregular shape.

(2) the spots are dark because the deposited oil is not perfectly translucent or, relative to the sensor, flat. If it's oblong in shape (see point 1 above), it may even function as a kind of irregular lens atop the pixels it covers, transmitting light only partially if at all.

Just hunches, but they seem to make sense to me.

(I had an experience almost identical to the OP's with my D7000.)

Sante Patate wrote:

But the spots are not round, they are irregular, and they are dark. How can they any sort of liquid, especially oil?

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