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Olympus OM-D E-M1 Mark II The second Micro Four Thirds camera that offers phase detect focusing so you can use Four Thirds DSLR lenses normally as well a Micro Four Thirds lenses.

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Old 12th June 2019
Walti Walti is offline
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Noise issues

Went on a landscape workshop on Monday and found that low light ISO200 photos are coming out very noisy lots of colour noise and general noise.

Am away from home without any pc nor software available to do a camera reset without losing all the settings and re-doing them all manually....

Has anyone else had similar issues? And if so what was the solution?

I canít post an example at the moment, but tripod mounted 4 second exposures simply donít work as they should!
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Old 12th June 2019
Growltiger Growltiger is offline
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Re: Noise issues

Go to Cog menu E1.

Set Noise Filter to Low. (I always use this setting.)

And most importantly set Noise Reduct. to Auto. (this is a feature to reduce noise with long exposures).

What did you have them set to?

Are you sure the photos really were at ISO 200?
If you were using M mode with Auto ISO then the ISO might have been anything. (There is an option when using M mode to specify if Auto ISO is On or Off.)
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Re: Noise issues

Are you talking raw? If so, there's no setting I'm aware of that can reduce noise (it would be pretty amazing if such a thing did exist!). Unless you're talking about long exposure noise, in which case there is a setting for that (which does a dark frame subtraction technique).

On the more general issue of noise at ISO 200 (raw), I do find a little in skies sometimes, esp if I push the contrast or such like (worst using the dehaze tool in Lightroom). Removing it is usually pretty easy though with a mask to select just the sky and adding NR. You don't need much detail in clouds.

Of course, if by "low light" you mean underexposed, then noise will be a problem that can only be fixed with global NR, but you'll lose detail of course.
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Old 12th June 2019
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Re: Noise issues

Quote:
Originally Posted by Growltiger View Post
Go to Cog menu E1.

Set Noise Filter to Low. (I always use this setting.)

And most importantly set Noise Reduct. to Auto. (this is a feature to reduce noise with long exposures).

What did you have them set to?

Are you sure the photos really were at ISO 200?
If you were using M mode with Auto ISO then the ISO might have been anything. (There is an option when using M mode to specify if Auto ISO is On or Off.)

Iíve manually set them to ISO200
Noise reduction is set to auto
Noise filter was set to standard, now low

I was taking long exposures in low light conditions and these normally come out well, the Olympus Ambassador I was with was horrified at the results I was getting - putting it simply - rubbish

I thought Iíd found a USB C lead as in a local shop so was going to try a factory reset as recommended!
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Re: Noise issues

Paul - can you post up an example file (ideally a raw)? Noise on long exposures was a problem with the E-M1 (original), but the mkii does not suffer from the same problem. However, turning long-exposure noise reduction on (not just Auto as Growltiger suggests) would be a belt and braces approach.

You may find the following articles helpful too:


http://seldomscenephotography.com/20...ong-exposures/

https://www.wrotniak.net/photo/m43/em1.2-dark.html

https://unlockingolympus.com/2017/03...on-comparison/
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Old 13th June 2019
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Re: Noise issues

Keeping track to see what is the cause.
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Re: Noise issues

Yes I'm interested in this too. I always see noise in my images when I sharpen them in Lightroom. I tend to give the luminance noise reduction a boost to tone it down a tad but it's almost always there.
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Re: Noise issues

I'm away from home at the moment, looking longingly at the Farne Isles and the really rough sea and bad weather! the noise levels are worse than when the camera is set to max ISO... it's really bad... but not on every photo, as we found when playing with HDR, the middle shot out of 5 was unusable!

I'll post examples when I get home. But I'm thinking it's a trip to Portugal!
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Re: Noise issues

Sounds like you might have hit a firmware bug that controls the iso, did you try a reset?
Can you measure what the shutter speed is (mechanical shutter noise) and compare a 200 iso shot with a high iso shot at the same f stop and see if they check out?
Can you check the EXIF to see what it says?
Have you accidently strayed into ISO bracketing?
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Re: Noise issues

Look at a bad photo on the camera. Press the Info button until it shows a small image and lots of info. Tell us what the ISO is.
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Re: Noise issues

You shouldn't be seeing lots of noise with a 4s exposure at ISO 200, will be easier to diagnose when you post a picture. In the meantime what was the scene?
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Re: Noise issues

Quote:
Originally Posted by Phill D View Post
Yes I'm interested in this too. I always see noise in my images when I sharpen them in Lightroom. I tend to give the luminance noise reduction a boost to tone it down a tad but it's almost always there.
What sharpening are you using? I used to see noise at ISO 200 with the Mark I but I don't with the Mark II. I don't tend to go above 40 with the sharpening though, occasionally 50.
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Re: Noise issues

I just use the sharpening slider in Lightroom around 50ish. Then I'll push the luminance slider to around 20ish or whatever helps without killing the detail too much. I'd rather leave noise than loose the sharpness.
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Re: Noise issues

Quote:
Originally Posted by Phill D View Post
I just use the sharpening slider in Lightroom around 50ish. Then I'll push the luminance slider to around 20ish or whatever helps without killing the detail too much. I'd rather leave noise than loose the sharpness.
Iím surprised youíre seeing noise at ISO 200 then, I donít use NR until the higher ISOís. I thought I was picky with noise tbh, but maybe not
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Re: Noise issues

I know what the noise levels should look like and the photos are definitely at ISO 200, pushing long exposures should allow for a reasonable photo - these are coming out all over the place.

As I arrive home I'm going to do a full factory reset and see if that cures the issue, and post some photos.

The scene was the inside of one of the Monsal trail tunnels, I got a whole stack of reasonable photos and a whole stack of noise!

If a reset doesn't sort it I'll get in touch with David the local Olympus rep and get him to advise!

Tesni Ward declared it was a camera issue! (and as she breaks so many of them she should know! ) and advised a full reset as a first step, but I am currently sans computer and suitable lead to sort it out after the reset!
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