Banding


Mike-P

Link Posted 13/04/2012 - 10:38
Just got back from Spain and before I left did some photos for a web site using the K-5 and 18-135mm. There is some serious banding in the sky which I have never seen before.

Link to file.
No equipment list here but thanks for taking an interest. My Flickr

carmagw

Link Posted 13/04/2012 - 10:52
I cann't open the picture (my pc software probably)

I've seen banding when using a polariser shot with a wide lens not sure if that helps.

Regards

George

Mannesty

Link Posted 13/04/2012 - 10:54
I've just downloaded your file and opened it in ACR via PS-CS5.

I can see no banding at all.

I've played around with exposure, brightness, contrast etc. Nada.

By 'banding', do you mean the sky colour changing from white'ish at left, to blue at right?
Peter E Smith

My flickr Photostream
Last Edited by Mannesty on 13/04/2012 - 10:59

Mike-P

Link Posted 13/04/2012 - 10:57
Strange .. wonder if it's my laptop screen.
Don't have it on any other pics though .. just ones I did that morning.
No equipment list here but thanks for taking an interest. My Flickr

K10D

Link Posted 13/04/2012 - 10:58
Opened in CS4, no banding.

Best regards

redbusa99

Link Posted 13/04/2012 - 12:24
opened in pse8 no banding Mike,
K3 II and the odd lens or 2

Flickr

ChrisA

Link Posted 13/04/2012 - 12:29
You've overexposed the sky a bit - the blue and green channels are clipping a bit at the bright end. Hence the blue on the right, cyan in the middle, white on the left.

I suppose you could call it three bands in that sense, that merge into one another.

Is that what you mean?

I used to get it all the time on the K10D, it drove me crazy until I got used to exposing for sky, not foreground. The K-5 is much better in that regard.
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Pentax K-3, DA18-135, DA35 F2.4, DA17-70, DA55-300, FA28-200, A50 F1.7, A100 F4 Macro, A400 F5.6, Sigma 10-20 EXDC, 50-500 F4.5-6.3 APO DG OS Samsung flash SEF-54PZF(x2)
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Last Edited by ChrisA on 13/04/2012 - 12:35

Aero

Link Posted 13/04/2012 - 13:38
There was obvious banding in the sky when I first opened it on my netbook. Zoomed in and then out -- and the banding disappeared. It looks like a screen thing.

Al

cbrog

Link Posted 13/04/2012 - 15:05
Opened your file in Pentax Dig.Cam.Utility 4 - banding very obvious.
I have seen this effect before but for the life of me, at the moment, I cannot remember where.

Must be a senior thing!

Roger.

SteveEveritt

Link Posted 13/04/2012 - 15:11
I opened it too and the banding was there initially (Picasa viewer) then the colours changed themselves and the banding went away after a second or so.
My Flickr link

"Life is what happens to you while you're busy making other plans" (John Lennon)
Last Edited by SteveEveritt on 13/04/2012 - 15:11

ChrisA

Link Posted 13/04/2012 - 16:50
SteveEveritt wrote:
I opened it too and the banding was there initially (Picasa viewer) then the colours changed themselves and the banding went away after a second or so.

Using the Picasa viewer, I get that too, which is indeed horrible. Picasa is a bit funny with DNGs, though - it wouldn't display K-5 ones properly at all till recently, so heaven knows what it does with them.

I can't believe that's what Mike's seeing - the clipping is bad enough
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Pentax K-3, DA18-135, DA35 F2.4, DA17-70, DA55-300, FA28-200, A50 F1.7, A100 F4 Macro, A400 F5.6, Sigma 10-20 EXDC, 50-500 F4.5-6.3 APO DG OS Samsung flash SEF-54PZF(x2)
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vjacesslav

Link Posted 13/04/2012 - 17:10
In IrfanView i can see the banding all the time. In Lightroom no banding...

Mike-P

Link Posted 13/04/2012 - 17:12
Its very strange .. If I view the file with Faststone I see the banding but load it into lightroom and there is none.

Edit the file and save as a jpeg .. view with Faststone and it's back.
No equipment list here but thanks for taking an interest. My Flickr

WaypointCharlie

Link Posted 13/04/2012 - 17:12
No banding here. I wonder whether it's an aliasing artifact when the image is displayed at an odd fraction of native resolution.

It looks to me like there's enough headroom left in the RAW file to recover from the clipping, if it bothers you. I've noticed the K-5 RAW files can cope with about one stop of clipping before things start getting messy, but then I normally enable highlight correction.
Last Edited by WaypointCharlie on 13/04/2012 - 17:15

Mike-P

Link Posted 13/04/2012 - 17:16
Plus side is that we have plenty of oranges .. downside is that the previous owner planted a tree that produces fruit to make marmalade
No equipment list here but thanks for taking an interest. My Flickr
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