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<blockquote data-quote="Stoshowicz" data-source="post: 382963" data-attributes="member: 31397">To me it REALLY looks mostly like&nbsp; sharpening artifact around the perimeter, not&nbsp; CA , for CA you really should be seeing color abnormality. IF you use unsharp mask , you can either reduce your radius to mAYBE .5-1.0 pixel at 190 power , or you can use 3 pixels at 25 power, which works better depends on your background and how tight you had to crop.You can also get a lightening effect as shown between the primaries like that if you use any of several post processing means of lightening shadows or reducing highlights .&nbsp; Feathers may have a translucent worn edge that can catch the light&nbsp; &nbsp; &nbsp; but on the crow , Im not thinking its that. I'm assuming Youre seeing this on JPEGS but not on unmodified RAW pix?&nbsp; But beware that your eyes can play tricks on you and you might see the effect a little even when its not there, zoom way in tight to 200% or so and you can see if its just not your eyes sometimes - though the ones here dont appear to be that.( an overall color temperature adj to get rid of the CA wouldnt seem a likely fix -sometimes they call the lateral CA a color 'noise&quot; and you do have a teenie tiny bit of that --no pix are really perfect.)Oh, and a teenie amt of blur can add colors to the blue which then shows as a gray where really really zoomed in.</blockquote>

[QUOTE="Stoshowicz, post: 382963, member: 31397"] To me it REALLY looks mostly like sharpening artifact [U]around the perimeter,[/U] not CA , for CA you really should be seeing [U]color[/U] abnormality. IF you use unsharp mask , you can either reduce your radius to mAYBE .5-1.0 pixel at 190 power , or you can use 3 pixels at 25 power, which works better depends on your background and how tight you had to crop. You can [U]also[/U] get a lightening effect as shown [U]between the primaries like that[/U] if you use any of several post processing means of lightening shadows or reducing highlights . Feathers may have a translucent worn edge that can catch the light but on the crow , Im not thinking its that. I'm assuming Youre seeing this on JPEGS but not on unmodified RAW pix? But beware that your eyes can play tricks on you and you might see the effect a little even when its not there, zoom way in tight to 200% or so and you can see if its just not your eyes sometimes - though the ones here dont appear to be that. ( an overall color temperature adj to get rid of the CA wouldnt seem a likely fix -sometimes they call the lateral CA a color 'noise" and you do have a teenie tiny bit of that --no pix are really perfect.) Oh, and a teenie amt of blur can add colors to the blue which then shows as a gray where [I]really really[/I] zoomed in. [/QUOTE]

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