Diagonal Lines in Sky Problem

It's easy enough to fix up the sky in Photoshop if you have it. Select the sky in the Blue channel (probably leave Red and Green be) and apply the Gaussian blur filter to it.
Yes, they are straight from the camera using fine compression. I
don't use superfine sometimes mainly to save CF space when I go out
on a long shooting expedition.

Oh well - time for a microdrive.

Thanks for the replies, dudes!

--
http://www.pbase.com/djblauer/other_stuff
 
Yes, they are straight from the camera using fine compression. I
don't use superfine sometimes mainly to save CF space when I go out
on a long shooting expedition.
When I download the original, it is only 120k, that is too small for a fine compressed photo. Maybe pbase is doing something to the pictures.--================g2.davidcostello.net
 
OK this is very strange. You should be able to compress an image that much with the G2 even on its lowest quality setting.

Super fine: ~ 2MB
Fine: ~ 1.5MB
Standard: 760 KB

Your image: 116KB !

Your other images look fine, many appear to be standard, or Fine. If that 116k image came straight from the camera there is a bug in standard mode that makes it go nuts once in a while. Compression has clearly destroyed that image.

Peter
 
Sometimes pictures taken through car's wind-screen gives funny characteristics, because some of the wind screens use glass, which has got some sort of polarizing effect on the light.

Just wanted to mention this, if this is the case with your picture.
guy
Here are some of my shots with my G2 showing funny diagonal lines
in the sky. Anybody seen these before? And how do I get rid of
them?

http://www.pbase.com/image/1189292/large

and,

http://www.pbase.com/image/1189294/large

David.

--
http://www.pbase.com/djblauer/other_stuff
 
David,

Those are JPEG compression artifacts. The file size of your original is only 117 KB. It should be about 1117 KB out of the camera. That means it has been compressed to about one tenth of its original size. I would have several questions.

Do those lines appear when you first upload the image out of your camera? Do you save them as JPEGs after editing, and if so what setting is your editor set at? Are you saving, then opening to work on and resaving several times? When you compress them to post on pbase, what compression setting are you using.

It is very common to see these artifacts on pbase; lost of people over compress to speed up the upload.

I downloaded your original and loaded it into BreezBrowser to get at your EXIF data and the histogram is wild. There is a hockey sock (Canadian term) of noise in that picture. Take a good look at the road on the original, the JPEG compression has pixellated the image and made it noisy.

If you are going to shoot in Large/Fine, you need to save at minimum compression (best quality). Better yet save as TIF to work on and save, and convert back to jpeg to email or post.
Cheers--Happy SnappingDon McVee http://www.pbase.com/mcveed
 
Either this didn't come straight from the camera, or there is some kind firmware bug. The G2 just doesn't compress that much period. Thats about 5 times more compressed than the highest compression it does.

Peter
David,
Those are JPEG compression artifacts. The file size of your
original is only 117 KB. It should be about 1117 KB out of the
camera. That means it has been compressed to about one tenth of its
original size. I would have several questions.
Do those lines appear when you first upload the image out of your
camera? Do you save them as JPEGs after editing, and if so what
setting is your editor set at? Are you saving, then opening to work
on and resaving several times? When you compress them to post on
pbase, what compression setting are you using.
It is very common to see these artifacts on pbase; lost of people
over compress to speed up the upload.
I downloaded your original and loaded it into BreezBrowser to get
at your EXIF data and the histogram is wild. There is a hockey sock
(Canadian term) of noise in that picture. Take a good look at the
road on the original, the JPEG compression has pixellated the image
and made it noisy.
If you are going to shoot in Large/Fine, you need to save at
minimum compression (best quality). Better yet save as TIF to work
on and save, and convert back to jpeg to email or post.
Cheers
--
Happy Snapping
Don McVee
http://www.pbase.com/mcveed
 
David

As suspected above, I think that this is a pbase issue.

If in doubt, check your original donload on your PC.

My guess is
1. Its more than 117kb, and
2. It doesn't have the line problem.

Thanks--Ian Mac - Melbourne Australia
 

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