IS THIS FRINGING AND WHAT CAUSES IT? In the attached image, there is a thin line which follows the profile of the top of the petal where the red of the petal meets the green of the...

RTS100 Loc: NSW Australia

In the attached image, there is a thin line which follows the profile of the top of the petal where the red of the petal meets the green of the background. It only seems to appear on the top edge. It isn't obvious on lower or left/right edges. The image was taken with Canon 40D, 15-70mm @ 70mm, F5.6, 1/400, ISO 320. The DoF is quite shallow so both the edge of the petal and the background are out of focus. I don't have any plans for this image; just curious as to why that line appears.

Grateful for any advice.

usaellie101 Loc: Spring Hill, Florida

Cannot see the line????

rpavich Loc: West Virginia

RTS100 wrote:

In the attached image, there is a thin line which ... (show quote)

No...not that I see; that line is POSSIBLY movement; I don't know. maybe the petals moved imperceptibly while you were capturing the shot.

fringing is a color thing...usually green or purple. If you google "color fringing" you can get some good examples.

PS: Nice shot.

Brendan Loc: Cornwall

i agree a good picture. flower and buds in focus.....

donrent Loc: Punta Gorda , Fl

I have a GREAT Optomitrist and if you'd like, I'll be glad to get you in early for a GOOD checkup.....

Brendan Loc: Cornwall

lol :shock:

Bret Loc: Dayton Ohio

Maybe try another shot only at about 60mm and see what you get.

ephraim Imperio

donrent wrote:

I have a GREAT Optomitrist and if you'd like, I'll be glad to get you in early for a GOOD checkup.....

Don, you are crazy funny!!!

EstherP

RTS100 wrote:

In the attached image, there is a thin line which ... (show quote)

From what I have read in other posts, I believe this is called chromatic aberration. I really don't know anything about it, but I think if you do a search on that phrase, you'll find what you're looking for.

Here's a link to an explanation, and a possible "fix-it"
http://farbspiel-photo.com/learn/hdr-cookbook/correcting-chromatic-aberration

And folks, the line IS there, just download the image, then click on it to enlarge, it is a thin purple line along the top edge of the petal.
EstherP

richnash46 Loc: Texas

EstherP wrote:

quote=RTS100 In the attached image, there is a th... (show quote)

I did everything you said Esther and still don't see the line, it must show up on monitors much better than mine! ;) :wink:

Dadyassa Loc: Spain

It only shows above the top right hand petal, so maybe caused by it blowing in the wind slightly '

gdwsr Loc: Northern California

I don't see any fringing (chromatic aberration). i do see, at 100% a slight ghosting along the upper right petal. Is that what you are asking about. As I understand it, it is usually caused by pushing the post processing (saturation or contrast a little too far). Because that petal is out of focus it is hard to tell exactly what it is.

usaellie101 Loc: Spring Hill, Florida

gdwsr wrote:

I don't see any fringing (chromatic aberration). i do see, at 100% a slight ghosting along the upper right petal. Is that what you are asking about. As I understand it, it is usually caused by pushing the post processing (saturation or contrast a little too far). Because that petal is out of focus it is hard to tell exactly what it is.

What the heck is FRINGING ( CHROMATIC ABERRATION)????

gdwsr Loc: Northern California

usaellie101 wrote:

gdwsr wrote:

I don't see any fringing (chromatic aberration). i do see, at 100% a slight ghosting along the upper right petal. Is that what you are asking about. As I understand it, it is usually caused by pushing the post processing (saturation or contrast a little too far). Because that petal is out of focus it is hard to tell exactly what it is.

What the heck is FRINGING ( CHROMATIC ABERRATION)????

EsterP provided that link (see above).

http://farbspiel-photo.com/learn/hdr-cookbook/correcting-chromatic-aberration

georgevedwards Loc: Essex, Maryland.

I am an artist by trade and may have an answer for you. It is an optical illusion, created by red/green contrast. If I move my eyes to different angles, the edge line changes or even disappears. It is an effect caused by complementary colors; as an artist I know something of color theory. This red-green effect occurs along the line where the two colors, which are opposites or "complementary" colors, meet. This efferct was often used in the "Op Art" or Optical Art movement, most popular in the 60's and 70's, using such effects of vision to create paintings which sometimes even seem to vibrate. The red/green contrast is one of the strongest color effects.

RTS100 wrote:

In the attached image, there is a thin line which ... (show quote)