DPReview.com is closing April 10th - Find out more

Strange sensor noise

Started Dec 26, 2015 | Questions
borisz New Member • Posts: 19
Strange sensor noise

iso 200 ca 250% enlargement

Have you ever seen this kind of sensor noise? This picture was taken with NX1100, sensor is clean, but enlarged over 150% it shows this kind of "pepper". I compared it to pictures taken with the same model of camera and havent discovered anything like that.

 borisz's gear list:borisz's gear list
Pentax K-5 Sigma 10-20mm F4-5.6 EX DC HSM Pentax smc DA 55-300mm F4.0-5.8 ED Pentax smc D-FA 50mm F2.8 Macro Sigma 17-70mm F2.8-4 DC Macro OS HSM +2 more
ANSWER:
This question has not been answered yet.
Samsung NX1100
If you believe there are incorrect tags, please send us this post using our feedback form.
otto k Senior Member • Posts: 2,252
Re: Strange sensor noise

Take a shot of the sky with lens closed down to f/16 or similar and blurred (focus on something very close) and see if you get this again. If you do, it's most likely dirty sensor. Remember, just because you can't see it it does not mean there is no dirt on it.

 otto k's gear list:otto k's gear list
Canon EOS 600D Samsung NX1000 Samsung NX500 Sony a6400 Samsung NX 30mm F2 Pancake +10 more
OP borisz New Member • Posts: 19
Re: Strange sensor noise

Thanks, but I'm experienced enough to have tried it myself It's not dirt for sure, taking mpictures of clean sky with different apertures doesn't change anything, it's the same all the tim (a bit stronger over ASA 800). I only wonder if I'm entitled to demand exchange (repair?). Is this flaw serious enough?

 borisz's gear list:borisz's gear list
Pentax K-5 Sigma 10-20mm F4-5.6 EX DC HSM Pentax smc DA 55-300mm F4.0-5.8 ED Pentax smc D-FA 50mm F2.8 Macro Sigma 17-70mm F2.8-4 DC Macro OS HSM +2 more
otto k Senior Member • Posts: 2,252
Re: Strange sensor noise

Sorry for that

It seems to me it's sensor malfunction (especially if they are in the same spots in every image) and if you are able to change the camera you really should.

Best of luck either way.

Cheers,
Otto

 otto k's gear list:otto k's gear list
Canon EOS 600D Samsung NX1000 Samsung NX500 Sony a6400 Samsung NX 30mm F2 Pancake +10 more
Tugela Contributing Member • Posts: 755
Re: Strange sensor noise

They look like compression artifacts.

 Tugela's gear list:Tugela's gear list
Nikon Coolpix P900 Sony RX100 V Nikon Coolpix P1000 Samsung NX1
OP borisz New Member • Posts: 19
Re: Strange sensor noise

Tugela wrote:

They look like compression artifacts.

you're probably right, raw>jpg conversion produces much smoother effect

 borisz's gear list:borisz's gear list
Pentax K-5 Sigma 10-20mm F4-5.6 EX DC HSM Pentax smc DA 55-300mm F4.0-5.8 ED Pentax smc D-FA 50mm F2.8 Macro Sigma 17-70mm F2.8-4 DC Macro OS HSM +2 more
Keyboard shortcuts:
FForum MMy threads