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NX300+85mm, weird problem, the aperture moves by itself and make some noise. WHY?

Started Dec 4, 2013 | Discussions thread
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giliath Regular Member • Posts: 257
NX300+85mm, weird problem, the aperture moves by itself and make some noise. WHY?

We know that the aperture is wide open unless we press the shutter button. But I don't know why sometimes the aperture of 85mm moves by iteself again and again. (I was not shooting or focusing, just did nothing...) This causes some noise and everything on the screen becomes very laggy....(After a reboot, it works normally again.)

At first I thoght maybe my 85mm has some problem, but when I tried that lens on NX1000, it works normally....(Both my NX300 and NX1000 use the same latest lens firmware---1.10.)

So, who know what's the problem? Thank you!

 giliath's gear list:giliath's gear list
Sony a7R II Tamron SP 24-70mm F2.8 Di VC USD Sony FE 70-200 F4 Sony Vario-Tessar T* FE 16-35mm F4 ZA OSS
Samsung NX1000 Samsung NX300
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