Noise in Lightroom from JPG vs normal RAW

4 years 9 months ago #651195 by Jessa Layton
I normally shoot in RAW, I was playing around with my camera and had moved it into JPG to see how many photos I would be able to fit on my memory card. Again just messing around, I had no intent in leaving.  

I went out shooting and I'm processing my photos.  My normal workflow starts in Lightroom where I will drop highlights -100, raise shadows +100 and then adjust might whites and blacks to just before clipping.  

As soon as I do this, I'm getting horrible noise showing up.  After going though my photos I finally just remembered that I didn't move my camera back to RAW, so all these photos are just JPGs.

Is this noise (grainyness) Im seeing because of my workflow, and that there isn't enough image data to show these correctly with my style of processing?


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4 years 9 months ago #651224 by Shadowfixer1
You can't manipulate a jpg nearly as much as a RAW file. Try backing off the Shadow adjustment because that's probably where the noise is coming from. There is just a lot less information to work with in jpg so noise and I find posterization being a big problem in skies. Use smaller tweaks than normal to control the noise.
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4 years 9 months ago #651227 by Nikon Shooter
A RAW workflow will permit better renditions when you make sure
the exposure is optimised using your best friend: the histogram.

Lr is so far back in time… cause I switch to an other converter but
you are right, in PP, workflow is everything. Tweaks are better per-
formed sequentially.

I shot some images in Frankfurt recently — ISO 12,800! — with no
apparent noise. Look for the thread "Frankfurt by Night".

Light is free… capturing it is not!
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4 years 9 months ago #651291 by garyrhook
Your camera threw away a huge amount of information when it created the JPGs. There's no way to recover that. It doesn't matter what software you're using, you can't make something out of nothing.

Consider it a loss and a lesson. It's happened to all of us (I dare say... but mayhaps some of us never make mistakes).

Noise reduction when creating JPGs is going to be up to the software: iPhones create horrible smears of color to eliminate noise; other devices not so much. You might be able to compensate with certain tools (Topaz Labs DeNoise comes to mind, or perhaps Noiseware (prior version is free?)) or you might just move on.


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