clothing material and color shift?

[papathree]

Dear Friendds,
I am posting two pictures. The one marked color of the bridesmaids dresses is what the bridesmaids dresses looked. (please note this photo is from another wedding and is to be used solely for color)
The one of the bridesmaids standing in the stair weld is how they turned out. I used Portra NC film both 35mm and 220 400 speed. I used my mamiya 645AFD with the T4D and I used my Monolta Maxxium 7 with the 5400 Flash. No matter where I shot this in the dressing room, church, reception hall, the dresses looked like this in all the photo's. Also, all the other clothing in the entire wedding shoot I shot turned out good. What happened? Was it the kind of material they were made out of? To look at the dresses as I did before the wedding you would never think they would do this. Your input would be appreciated.
Thanks
Ron Leininger

[Tixeon]

As far as I can tell, it's mostly the material. The bridesmaids dresses in the right photo is quite shiny. Look at the middle bridesmaid, the one standing slightly in front of the bride. Now look at the chest area of her dress & you'll see that it is close to the color you are pointing to in the photo on the left. This part of the dress is flatter (no offense to the bridesmaid) than the folds in the rest of the dress & is oriented in such a way that it is kinda squared up (perpendicular) to the camera. It therefore appears to reflect more of the true color than the narrow highlights of the folds. In other words, direct flash & shiny material is the culprit.

I hope I didn't miss your point, & if I did, maybe someone else has an answer.

[PhotosGuy]

Another thing to remember is that dyes In dresses, dyes in film, ink in photo prints, printers ink on paper, & a monitors response, are all different in rendition of the spectrum than the eyes response. And different individuals can see colors differently, too. Getting everything to match is a crapshoot, & sometimes just not possible.

[LBaldwin]

I could not have said better than that. My guess is that the client is not happy with the images. Re shoot the images under the same lighting to see if it happen again. Looks to me like a reflectance issue as well. The nap or direction of the material may be an issue too.

Les

[40d]

Pretty certain that its the material. Looks a lot like what used to be known, (to me anyway), as 2Tone or Tonic which looks a different color depending on the viewing angle and/or the lighting angle.

[chtgrubbs]

Looks like this may be what the film technicians call an "anomalous color response". There is a band of blue color, which I have seen in blue morning glory blossoms and other flowers, which reproduces as pink or purple rather than blue. If the client wants you to reshoot, it might be worthwhile to borrow one of the dresses, shoot it with a color checker or gray card and see if the color lab can reproduce the color accurately. If they can't, you will simply have to explain it to the client.

[BestVisuals]

Material color changes are most visible with white bridal dresses, but other materials can do it. Color shifts are almost always towards blue, due to UV flourescence. You'll see it mostly outside with an abundance of UV illumination. Many flashes limit the UV light they output unless the flash duration is ultra short.

[Tixeon]

Those color shifts reminds me of an interesting portrait sitting I did many years ago. The gentleman wore a green polyester leisure suit ( god forbid they should ever come back ) & I used Kodak Professional Portrait film. Well, the suit color accuracy was a total disaster. The material turned out a muddy tan and the buttons were all different shades of brown or blue. The only fix was a reshoot with a different suit.