Nikon d7100 uneven noise ditribution

Started Apr 28, 2013 | Discussions thread
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Aurimasm
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Nikon d7100 uneven noise ditribution
Apr 28, 2013

Hello,

My Nikon shows a lot more noise at bottom of the sensor. It is very visible at high ISO but diminishes at low ISOs. Is this normal? Or it's faulty sensor and I should get it replaced?

I've made a photo with a lens and eye piece reliably closed not to allow any light leak. It is made at 25600 ISO to exaggerate the effect. Lower part of the image show significantly brighter ISO noise.

Please advise.

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