White turning purple . . .

Hi everyone, I just took some photos of my daughter wearing a white bow on her head -- but when I uploaded them, the bows looked purple. I tried to adjust the tint, but that made the rest of the photo look bad. I took the pictures with my 85 1.8 and wondered if that is CA? I shoot in RAW and use Lightroom to process -- if anyone could offer tips, I'd greatly appreciate it!

Here is a sample:

IMAGE LINK: http://www.flickr.com/​photos/yankeemom/56721​00947/

is it a satin/sateen/whatever bow? Those reflective materials often have a sort of color cast that our eyes ignore.

it could also be a bit of eye trickery from the off-white dress. When you put yellowish off white next to white, sometimes the white looks blue/purplish to our eyes.

If it were CA you would have color fringing around the edges as well as false color.

Highly reflective materials like that will also pick up on reflective light off surrounding objects. Looks like it could possibly be picking up on the wood wall behind her. Could also be like Chippy569 explained, trickery from comparing it to the off white dress.

Other than that the only thing I would recommend is setting a custom wb first.

If that is CA it would be the worst I have even seen. You would see CA in tree branches and I don't see any.

I used software called Viveza by NIK. All I did was click on the item, size the circle and I then desaturated the bow. It is a little pricey and sometimes picks up colours around the one you are working on.

You can watch the demo.

http://www.niksoftware​.com/viveza/usa/entry.​php

It took me about 15 seconds.

digital paradise wrote in post #12322243
If that is CA it would be the worst I have even seen. You would see CA in tree branches and I don't see any.

I used software called Viveza by NIK. All I did was click on the item, size the circle and I then desaturated the bow. It is a little pricey and sometimes picks up colours around the one you are working on.

You can watch the demo.

http://www.niksoftware​.com/viveza/usa/entry.​php

It took me about 15 seconds.

Another option that some people might already have is that you can also use perform isolated local adjustment in ACR.
http://www.adobe.com …rticles/lrvid40​08_ps.html

Chippy569 wrote in post #12322009
is it a satin/sateen/whatever bow? Those reflective materials often have a sort of color cast that our eyes ignore.

it could also be a bit of eye trickery from the off-white dress. When you put yellowish off white next to white, sometimes the white looks blue/purplish to our eyes.

It is a little shiny; OK, I guess it's just a normal thing that I didn't notice. Thanks for the info!

tkerr wrote in post #12322100
If it were CA you would have color fringing around the edges as well as false color.

Highly reflective materials like that will also pick up on reflective light off surrounding objects. Looks like it could possibly be picking up on the wood wall behind her. Could also be like Chippy569 explained, trickery from comparing it to the off white dress.

Other than that the only thing I would recommend is setting a custom wb first.

I'll keep that in mind next time. I was thinking that this could be a problem if someone were shooting a wedding. Thanks!

digital paradise wrote in post #12322243
If that is CA it would be the worst I have even seen. You would see CA in tree branches and I don't see any.

I used software called Viveza by NIK. All I did was click on the item, size the circle and I then desaturated the bow. It is a little pricey and sometimes picks up colours around the one you are working on.

You can watch the demo.

http://www.niksoftware​.com/viveza/usa/entry.​php

It took me about 15 seconds.

That's great. I did try to desaturate, but the "new" color wasn't white either (I can't remember what it was, but it looked really odd.) Thanks for the info and for showing me what you did.

NOTE: I am also just now seeing a dark line around her right side (left side from viewers perspective.) It looks ODD; something else to work on.

I've had one case like this.

I suspect it's coming from some bluish brightener used to achieve the brightest white (to the eye), that the camera registers. Certainly not CA, although the 85/1.8 is prone to it, but that wouldn't affect the entire bow.

agedbriar wrote in post #12323487
I've had one case like this.

I suspect it's coming from some bluish brightener used to achieve the brightest white (to the eye), that the camera registers. Certainly not CA, although the 85/1.8 is prone to it, but that wouldn't affect the entire bow.

If it were CA, it would be more pronounced along the edges of those vines as a violet fringe.

Thanks for the info. -- I wasn't really sure what CA is, but I think I understand now. I had heard that the 85 was prone to it, so wondered if that might be it. OK, I guess I just have to watch it with the white from now on.

The fact that it fills the bow but does not show up in the dress at all would lead me to believe that it's something about the bow -- maybe just that you didn't notice a slight color tone (but the camera did) or like someone mentioned there was some reflectence in the ribbon that picked out something in the background.

If you see the girl/family often it would be interesting to get the bow, examine it, and do some test shots -- could be interesting!

Yeah, I see her often -- she's my daughter. I will look that bow over, too. Like I said, if I were doing weddings, I'd want to be aware of this possiblity with white.

In case you were wondering this is CA. Look at the pole in the middle. In my photo world CA (although correctable) is #1 on my dislike list. Everything else starts at a distant second. I really hate CA.

Ya, it's most likely a dye (brightener) in the bow. Many white things are not actually "white" but as mentioned earlier, our eyes are very adaptive (we see what we think we should see). My wife has something that does the same thing and people are quick to jump and call it PF on the 85/1.8

Either an optical whitener or reflection of the (blue) sky.

Hmmm... I often have success with this kind of issue using the Polarizing filter in NIK ColorEfex Pro, so maybe an actual CPL would have helped.

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