D5000 Digital noise during during daytime???

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petes78

New member
Hello, I was recently in Bora Bora and was taking pictures during the sunset. I am curious as to why I was getting digital noise during the daytime? Is it the camera? The setting were - ISO 500, f/4.8 exposure 1/2500 - I attached the picture. Even when I took a picture a picture at ISO 200 I had the same problem. Is it the camera or am I just missing something???
 

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Last edited:
Marcel

Marcel

Happily retired
Staff member
Super Mod
What is your quality setting? Are you using Raw or Jpeg? If Jpeg, Fine-Large or Medium-small? This could be it, or, the picture is a little under-exposed.

If you could post your quality settings and exposure date, maybe we could find the culprit.
 
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bgrg

Senior Member
I don't think it's noise, it looks more like compression artifacts. JPEG quality is probably too low. If this is the original file, then the size is also very telling. A maximum quality JPEG from a D5100 should be 5-8MB, not 0.5MB.
 
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bgrg

Senior Member
petes78 said:
I took the picture using Fine/large. I had to re-size the original file because it was too big to upload to this thread.
Click to expand...

Judging by its dimensions you didn't resize it much, but you lowered the JPEG quality setting a lot, and it shows. This makes it hard to distinguish between the noise you complain about and the artifacts of heavy compression.

Could you instead crop a small, really noisy part of the original image and upload that in a lossless format, like 24-bit PNG?
 
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bgrg

Senior Member
Indeed, this amount of noise looks too much for an ISO 500 image. My guess is that the sensor was probably overheating a bit. Were you using the camera a lot in the previous hours? Was it a sunny day?
 
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