Need advice: Please note the brownish outline on the margin of the flower and the leaves. What is the cause of this and how do I correct the problem? This does not look too unusual on...

joepeva Loc: TN

Please note the brownish outline on the margin of the flower and the leaves. What is the cause of this and how do I correct the problem? This does not look too unusual on the leaves as they have a brownish cast on the bottom at times. Shot with Nikon D90,Nikor 35/1.8. iso 200, 1/200. white balance auto, sharpening 4

GoofyNewfie Loc: Kansas City

Looks like chromatic aberration (CA)
http://www.dpreview.com/glossary/optical/chromatic-aberration
"Chromatic aberration or "color fringing" is caused by the camera lens not focusing different wavelengths of light onto the exact same focal plane (the focal length for different wavelengths is different) and/or by the lens magnifying different wavelengths differently. These types of chromatic aberration are referred to as "Longitudinal Chromatic Aberration" and "Lateral Chromatic Aberration" respectively and can occur concurrently. The amount of chromatic aberration depends on the dispersion of the glass."

Another good link which includes instruction to fix CA in Photoshop:
http://www.tutorial9.net/tutorials/photography-tutorials/correcting-and-preventing-chromatic-aberration/

joepeva Loc: TN

Thank you for your prompt diagnosis of the problem. Now where do I begin to address the problem in PSE 10?

GoofyNewfie Loc: Kansas City

joepeva wrote:

Thank you for your prompt diagnosis of the problem. Now where do I begin to address the problem in PSE 10?

Not sure, as I don't have Elements.
If we figure it out, post it here.

ecobin Loc: Paoli, PA

joepeva wrote:

Thank you for your prompt diagnosis of the problem. Now where do I begin to address the problem in PSE 10?

Do a google search and on YouTube; include chromatic aberration and PSE 10 as key terms.

GoofyNewfie Loc: Kansas City

ecobin wrote:

Do a google search and on YouTube; include chromatic aberration and PSE 10 as key terms.

I' ve done that and keep coming up with tutorials that show bow to desaturate the offending color, but not fix it like the full-blown Photoshop program.
As Spock says..."Fascinating"

ecobin Loc: Paoli, PA

GoofyNewfie wrote:

I' ve done that and keep coming up with tutorials that show bow to desaturate the offending color, but not fix it like the full-blown Photoshop program.
As Spock says..."Fascinating"

Same here - based on my searches it appears that full photoshop is needed. This link shows only how to desaturate but result is good.

http://www.photoshopelementsuser.com/video/removing-chromatic-aberration-with-elements/

Haveago Loc: Swindon, Wiltshire. UK.

GoofyNewfie wrote:

Looks like chromatic aberration (CA) br http://ww... (show quote)

Thanks for those GoofyNewfie first one VERY useful.

:thumbup:

Baz

Haveago Loc: Swindon, Wiltshire. UK.

joepeva wrote:

Please note the brownish outline on the margin of the flower and the leaves. What is the cause of this and how do I correct the problem? This does not look too unusual on the leaves as they have a brownish cast on the bottom at times. Shot with Nikon D90,Nikor 35/1.8. iso 200, 1/200. white balance auto, sharpening 4

I beleive that in Photmatix you can remove CA when loading the picture. It's free as well you can find it on Yahoo or Google.

Baz

joepeva Loc: TN

Thank you for your help. I now know the problem and can work on correcting it in the future should this problem arise again. This photograph is not critical. I get a "do over" on this one since it is in my backyard. Thanks again Joe P.

rpavich Loc: West Virginia

joepeva wrote:

Thank you for your help. I now know the problem and can work on correcting it in the future should this problem arise again. This photograph is not critical. I get a "do over" on this one since it is in my backyard. Thanks again Joe P.

CA is just a fact of life with certain lenses and apertures in certain situations in bright light/bright tonal transitions.

Lightroom will fix it automatically as will Adobe Camera raw.

Edited to add: Evidently PTLens is a plug-in for PSE that will do lens corrections including CA.

GoofyNewfie Loc: Kansas City

rpavich wrote:

Edited to add: Evidently PTLens is a plug-in for PSE that will do lens corrections including CA.

http://epaperpress.com/ptlens/

joepeva Loc: TN

Thank you..everyone for this exchange of information. Joe P

bedgmon Loc: Burleson, Texas

GoofyNewfie wrote:

Looks like chromatic aberration (CA) br http://ww... (show quote)

Thanks, there are so many things to learn in PS. I will be trying this feature out today! :thumbup:

charryl Loc: New Mexico, USA

joepeva wrote:

Thank you for your prompt diagnosis of the problem. Now where do I begin to address the problem in PSE 10?

I am not familiar with pse but if you shot in raw there is a chromatic aberration adjustment in the raw converter.