Noise at low level ISO 6D

mattd85

mattd85

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Matt
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hi all,

These past few weeks I've been doing some edits and noticed that all my shots are extremely noisy, even at low ISO on the canon 6D.

When viewing as a JPEG in the standard Windows picture view they look fine, when opened in camera raw they look fine, but once opened into Photoshop itself all hell breaks loose and they appear very very noisy!

I've took pictures at ISO 5000 on the 6d and only had to put a bit of noise reduction in, now even on the smaller ISO shots I'm putting in uoto 80% luminescence reduction.

Any ideas?

Thanks

Matt
 
Do you mean they never used to look noisy when opened in Photoshop and now do, or you've only recently started using Photoshop so have only just noticed?

Post up a raw... let's have a look.

The 6D is not renowned for it's great high ISO performance, but there shouldn't be any noise at lower ISOs (below 400).. certainly not enough to warrant such insane noise reduction levels - even with detail recovery, 80% will be making your images look like oil paintings!!

Are you sure you're just not becoming obsessed with noise and trying to remove all traces of it at any cost? Noise is not the end of the world you know. You shouldn't really be applying any NR to stuff shot below 400. I don't add any to stuff shot at 800. It just kills detail.
 
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Pookeyhead said:
Do you mean they never used to look noisy when opened in Photoshop and now do, or you've only recently started using Photoshop so have only just noticed?

Post up a raw... let's have a look.

The 6D is not renowned for it's great high ISO performance, but there shouldn't be any noise at lower ISOs (below 400).. certainly not enough to warrant such insane noise reduction levels - even with detail recovery, 80% will be making your images look like oil paintings!!

Are you sure you're just not becoming obsessed with noise and trying to remove all traces of it at any cost? Noise is not the end of the world you know. You shouldn't really be applying any NR to stuff shot below 400. I don't add any to stuff shot at 800. It just kills detail.
Click to expand...

WHAT????? The 6D is very well known for great high ISO performance. Have you ever used one? 5000 ISO shouldn't be a problem at all for a 6D.
 
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Yes they never used to look noisy but now do.

I will post a shot Up when I get home from work. I re opened a shot that I know to be ok last time I edited it and now it's showing as noisy in Photoshop ?

The difference between the camera raw edit and what's then opened in Photoshop is like chalk and cheese, also when I zoom in 33% once opened in Photoshop the noise goes, as soon as I fit screen it all comes back.?
 
Doesn't really matter whether the 6D is or is not renowned for good high ISO performance, at ISO100 there should be no noise to speak of. Any chance of an earlier raw and one that shows noise, both @ ISO 100 ? dropbox or similar. I'd happily take a look ...
 
PaulButler said:
Doesn't really matter whether the 6D is or is not renowned for good high ISO performance, at ISO100 there should be no noise to speak of. Any chance of an earlier raw and one that shows noise, both @ ISO 100 ? dropbox or similar. I'd happily take a look ...
Click to expand...

The OPs images are ISO 5000
 
How are you opening the images in Photoshop. Considering they are RAW images, I assume they are opening in ACR.

You say that when you zoom in the noise has gone again. That's how Lightroom used to work. Maybe you have a preview checkbox unchecked.

Also check to see which processing version you are using.
 
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Sorry what I meant was in the past I have taken images at 5000 ISO and hardly had to reduce the noise on them, and now images taken at low ISO , 640 being an example, are showing very noisy in Photoshop but not in camera raw or when viewed out of the Photoshop application
 
I think you need to explain how you are opening the image into photoshop. PS does not open raw files, it uses ACR. If you open the image from ACR into PS the image is being converted to a pixel based image
 
Yes so I open in camera raw and do my edits, then I open image into Photoshop itself and it looks very noisy compared to what I've just seen in acr
 
I've used Photoshop for the last 3 years and this is the first time I've experienced this. Like I said I did a shot at ISO 5000 and hardly had to do any noise reduction and now I find myself doing nr on images at 640 ISO
 
Are you lifting exposure at all? i.e. is the original under-exposed? this will usually introduce noise to some degree ... failing that, maybe stick an older raw and one that is noisy up on dropbox so folk can have a play.
 
If someone gives me a Dropbox email I'll send over a raw at 640 ISO and see how it looks on your PC
 
Ok, I've just opened a shot , one straight JPEG and then the Raw opened in acr with no editing and just opened in Photoshop and they are like chalk and cheese in terms of noise. Obviously I know the difference between raw and JPEG but the difference in noise levels shouldn't be no where near like this
 
Matt sent me a dropbox link to two files, both as they came out of the camera. They are the same image so he is shooting raw + jpeg.

I'm seeing noise in the raw and virtually little in the jpg so am guessing your jpg processing in camera is applying noise reduction. This is common btw and certainly in the case of Nikon as the ISO climbs so does the default NR, I'd be surprised if Canon didn't do similar. I've applied 31 luminance and 24 colour NR in lightroom and get very similar results to the jpg. Using ACR in PS and applying the same luminance and colour NR also gives me very similar results. The noise in the raw is slightly better than what I'd expect to see tbh and shows how well the 6D handles higher ISO's. I'm sure with a little more effort I could get even better results but once the files are re-sized for viewing (or printed even at A3) any noise will be lost. All in all a very good performance. fwiw exposure was pretty much bang on imo.

I don't like using PS for noise reduction I find it poor compared to LR and ACR.

I've posted some crops (at 100%) which can be clicked through and the full size/detail. The first is a straight conversion from the raw file with no NR and no other develop settings applied and no sharpen on export either.
RAW_CROP_No_NR by Paul, on Flickr

This is the JPG again the same crop @ 100%
JPG_SOOC_CROP by Paul, on Flickr

This is the raw with luminance 31 and colour 24 applied (no other dev settings applied and no sharpening on export either)
RAW_CROP_WithNR by Paul, on Flickr

Like I said, I think that is pretty good performance for ISO 2000
 
ecoleman said:
WHAT????? The 6D is very well known for great high ISO performance. Have you ever used one? 5000 ISO shouldn't be a problem at all for a 6D.
Click to expand...

Apologies... I was thinking 60D for some reason, even though I typed it correctly. Then it's even more puzzling... something has to be user error or just unrealistic expectation. Even the 60D should be good to ISO800 with quite moderate NR management..
 
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PaulButler said:
I've posted some crops (at 100%) which can be clicked through and the full size/detail. The first is a straight conversion from the raw file with no NR and no other develop settings applied and no sharpen on export either.
RAW_CROP_No_NR by Paul, on Flickr
Click to expand...


What ISO is this?
 
Hmmmm wouldnt have clue whats going on. I'm no expert and maybe I do something wrong but since owning my 6d I have never used noise reduction on anything.


Gaz
 
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