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Canon 7D Noise and Banding

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This topic is locked.
Reason: locked as requested by OP - question answered
chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 5:55 AM

Hi Peeps

Just purchased the 7D on the whole I am VERY pleased with it but on some images are very noisy even at iso200 but this image I noticed a few banding lines across the image? its shot at 200 iso and lifted in lightroom by 1 stop.

Do you think I am pixel picking or is this the norm with a 19mp 1.6 sensor?

link to image

Off to the fens now so wont be able to reply until tonight.

P

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23 Dec 2009 - 5:55 AM

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GlennH
GlennH  91918 forum posts France1 Constructive Critique Points
23 Dec 2009 - 7:25 AM

No camera produces noise-free images when you view at 100%, apart from at base ISO settings perhaps. That said, I wouldn't expect much noticeable noise at 200 ISO (on a 5D anyway), but pushing the exposure by one stop might alter that a little - particularly with shadow noise.

With the high pixel density of the 7D sensor, I guess there is some price to pay, but I can't see any banding in your ePz image for what it's worth. Maybe my eyes are going! Web pictures are generally too small for such things to be noticeable.

I don't think it's worth sweating it too much over minor flaws at 'actual pixels'. It's not real world, and the only time you really have to play that game is when you''re submitting pictures to other pixel peepers (agencies, for instance).

User_Removed
23 Dec 2009 - 9:12 AM

Have a look at the other forums on this and exposing to the right ie over expose slightly but still keeping detail in the highlights - underexposing and pushing will produce this on every camera.

timcordell
timcordell  1126 forum posts United Kingdom
23 Dec 2009 - 10:04 AM

have you done the fireware update, ver 1.1.0

Coleslaw
Coleslaw e2 Member 913403 forum postsColeslaw vcard Wales28 Constructive Critique Points
23 Dec 2009 - 10:25 AM

Pushing 1 stop is really not going to help.
Have you look at a correctly exposed shot at ISO200?

cambirder
cambirder  107202 forum posts England
23 Dec 2009 - 11:36 AM

If you look at the underside of the hawk, its still under exposed so we are getting on for two stops under exposure for the shadow area which will increase the issue. I don't think there is a particular issue with the camera, just under exposure in a tricky lighting situation.

chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 6:47 PM

Thanks for the replies Smile


Quote: Have you done the fireware update, ver 1.1.0

Yep Updated from day1


Quote: Pushing 1 stop is really not going to help.
Have you look at a correctly exposed shot at ISO200?

Yep you can see it Sad

I have now uploaded an image taken today it looks worse on this image ?!"? I think its going back Sad
uploaded image

Coleslaw
Coleslaw e2 Member 913403 forum postsColeslaw vcard Wales28 Constructive Critique Points
23 Dec 2009 - 6:56 PM

Upload one with correctly exposed then, Paul.

chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 7:05 PM


Quote: Upload one with correctly exposed then, Paul.

Tis done, incidentally I just processed the image with Canon DPP and it looks a lot better?? I processed the previous ones with Lightroom 2.5 ? Not even sure if they have this profile installed yet?

P

Coleslaw
Coleslaw e2 Member 913403 forum postsColeslaw vcard Wales28 Constructive Critique Points
23 Dec 2009 - 7:21 PM


Quote: Tis done

Where?

chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 7:22 PM

http://www.ephotozine.com/u28051/gallery/1421319

Coleslaw
Coleslaw e2 Member 913403 forum postsColeslaw vcard Wales28 Constructive Critique Points
23 Dec 2009 - 7:26 PM

But those were underexposed to start with, weren't they?

chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 7:28 PM

Yes thats what I said from the start


Quote: ifted in lightroom by 1 stop.


are you with me Wink or am I not with you ? Smile

P

Coleslaw
Coleslaw e2 Member 913403 forum postsColeslaw vcard Wales28 Constructive Critique Points
23 Dec 2009 - 7:31 PM

I know!
I said

Quote: Upload one with correctly exposed then, Paul.

I mean those correctly exposed originally, not those corrected in Lightroom or DPP. Just to see if a correctly exposed shot has any noise.
Are you with me now? tut tut tut..... LOL

Last Modified By Coleslaw at 23 Dec 2009 - 7:32 PM
chinny
chinny  9492 forum posts United Kingdom
23 Dec 2009 - 7:34 PM

Still not with you? you mean straight from the camera?

Attention!

This topic is locked.
Reason: locked as requested by OP - question answered