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Unstoppable waves

Discussion

5 replies
Posted by Giuseppe Guadagno on June 23, 2008 at 4:00 AM
We all know very well that our feeling and upraisal about all our photos depend on the type and intensity of the emotion that we felt before shooting. Well, there is a picture that I love very much, above its photographic qualities, that has an illness incurable at least for me. The image is very simple: four blue asters on a whole green meadow. But in the green run many concentric waves of the same colors that I am unable to delete. I tried with clone, paint brush, changing color, feathering, decontrasting, lowering saturation, with curve in Lab, Noiseware etc. The problem is in all the three channels. It can be seen in the tiff of 70MB and in the jpeg for web. Never compressed. All the setting of my D2X are excluded and the problem has never occured before and after.
I don't understand the cause and can't find a solution.
The photo can be seen in my portfolio >G >Giuseppe Guadagno >first page. There is a treatment? There is a good surgeon willing to help me? Thanks very much in advance.
Posted by Wim Reyns on June 23, 2008 at 5:53 AM
Hi Gigi,
I took the liberty to play with your image a bit, so i hope you don't mind.
Anyway, what i did was : 1) on a new layer, sample the green color and brush it over the light green -> then set blending mode of that layer to color
2) duplicate that layer and set the blending mode to luminosity -> fiddle with the opacity to fit your need
3) i then ran noise reduction and applied a mask on your asters.

I hope this is what your looking for and that this has helped you :smile:


Wim.
Posted by Basil Greber on June 23, 2008 at 6:28 AM
Did you shoot the thing in RAW? And did you do major contrast adjustments? Looks like posterization (?) - it happens to me with blue skies once in a while, too...

Basil
Posted by Giuseppe Guadagno on June 23, 2008 at 7:50 AM
Thanks Win. I will experiment, trying to save the two spots of sunlight that are an important part of my emotion.

Basil, by mistake I shot all the card in TIFF instead RAW! I did some work in PS but non much, specially contrast. A 16 bit file, 4288x2848 pxl, well esposed at 1/60 - f/8 - ISO 100 - lens F200 macro should not posterize, I think. But all is possible. You have something to do when your sky posterizes?
Thanks Basil.
Posted by John Mumaw on June 23, 2008 at 1:43 PM
The only fix for posterization is to add noise/grain to hide it or to completely replace the area.
The noise/grain fix can work surprisingly well!
Posted by Giuseppe Guadagno on June 25, 2008 at 8:36 AM
I tried your advises.
Wim, I think that your suggestion is excellent in most cases. In mine, one must be a better painter then me for overpainting the many feathering of lights and colors present in this image. Thanks for sharing a usefull tecnique.

Basil and John, yes it seems to be a posterization. I tried some filter an for my image the best work is done by: texture>granulosity. It works!
Thanks to all for the help.