How to fix purple fringing

R
Posted By
RickyB
Apr 24, 2004
Views
417
Replies
5
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Closed
I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated.
Thanks Rick B

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H
Hecate
Apr 25, 2004
On Sat, 24 Apr 2004 15:34:21 GMT, "RickyB"
wrote:

I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated.
Thanks Rick B
It’s a camera problem. Specifically a problem that digital cameras have to a greater or lesser degree. The only thing you can do to minimise it is to use the lowest possible ISO.



Hecate

veni, vidi, reliqui
N
nomail
Apr 25, 2004
Hecate wrote:

I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated.
Thanks Rick B
It’s a camera problem. Specifically a problem that digital cameras have to a greater or lesser degree. The only thing you can do to minimise it is to use the lowest possible ISO.

Purple fringing is caused by two things: the lens and the camera algoritms. I don’t think either is influenced by the ISO setting. However, landscapes do not have a lot of purple colors by themselves, so you should be able to minimise the effect using Hue/Saturation and select the purple colors only. Lower the saturation and/or change the hue.


Johan W. Elzenga johan<<at>>johanfoto.nl Editor / Photographer http://www.johanfoto.nl/
RF
Robert Feinman
Apr 25, 2004
In article <1Ovic.14058$
says…
I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated.
Thanks Rick B
Color fringes are usually caused by chromatic aberration in the lens. You can correct for this with the free image editing tool kit called panorama tools. It runs as a series of plugins in Photoshop. Do a search for a site hosting the kit. Also you lens may have been tested by the ptlens web site.


Robert D Feinman
Landscapes, Cityscapes and Panoramic Photographs
http://robertdfeinman.com
mail:
EG
Eric Gill
Apr 25, 2004
(Johan W. Elzenga) wrote in
news:1gcsq9b.pcsbtldis7lmN%:

Hecate wrote:

I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated. Thanks Rick B
It’s a camera problem. Specifically a problem that digital cameras have to a greater or lesser degree. The only thing you can do to minimise it is to use the lowest possible ISO.

Purple fringing is caused by two things: the lens and the camera algoritms. I don’t think either is influenced by the ISO setting. However, landscapes do not have a lot of purple colors by themselves,

Well, now, that depends if you’re in Scotland in the springtime, now, doesn’t it?
<snip>
H
Hecate
Apr 26, 2004
On Sun, 25 Apr 2004 11:50:12 +0200, (Johan W.
Elzenga) wrote:

Hecate wrote:

I have a canon A70 camera. Most of my pictures are of landscapes. Waterfalls, mountains and such. My problem is that there is a noticeable purple fringing in alot of the pictures. I know I don’t have the best camera but it serves my purposes very nicely. Am I setting the camera wrong and if not how can I easily fix with with photoshop. My basic solution is to change the blue sky to a hazy partly cloudy sky which seems to work but this is sometimes tedious around trees and fine details. Any suggestions would be greatly appreciated.
Thanks Rick B
It’s a camera problem. Specifically a problem that digital cameras have to a greater or lesser degree. The only thing you can do to minimise it is to use the lowest possible ISO.

Purple fringing is caused by two things: the lens and the camera algoritms. I don’t think either is influenced by the ISO setting. However, landscapes do not have a lot of purple colors by themselves, so you should be able to minimise the effect using Hue/Saturation and select the purple colors only. Lower the saturation and/or change the hue.

It is. Influenced by the ISO setting that is. The fringing is reduced at lower ISO numbers in all cameras I’ve seen with that problem. I didn’t say it was necessarily logical (though it may be to do with the plethora of noise at higher ISO) but it does happen.



Hecate

veni, vidi, reliqui

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