trick with photoshop?

Hello again. Maybe anyone of you will know and explane to me how this photographer can change backgrownd colores without any backgrownd lights? All he change on each pictures- only flowers for the back grownd and all this kind of staf, but in real life all walls in his photo studio are white! He also use only two lights with soft boxes but he get this unusual effect! How?!

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I dont know, but im interested now too!

In Photoshop I presume, dunno how though

i was thinking the saim, but interesting is that after photoshoot when he downloadet pictures in computer and opened them, they was already with this nice effect, how could he do this so quick of 100 pictures saim time?

OK, I misread the OP's post the first time so let me try again. If his walls are all white with nothing on it, then it's very possible that he is projecting his background on to the wall using something like a slide projector.

If he has a solid colour as a background it would be very simple to replace with any image.
use magic wand to select all the white
inverse the selection (now the model is selected as a whole)
Right click and ad feather of maybe 2 pixels so as to not have sharp jagged edges of model
copy model
paste over what ever background you want.

That would be a quick way to do it. I am sure there would be a more professional way.

flash gel perhaps? i highly doubt it was photoshop.

The OP indicates that 2 lights with softboxes are used but neither is on the background.

I curious to know what is being done because it would be very difficult to select and replace a background without some sort of lighting. Even with a plain white background that isn't being lit that would be a challenge.

I'm wondering if an important piece of info has been omitted that might help us figure this out.

flash gel?

It can't be flash gel if the background does not have it's own light(s), and it would require very even lighting so as not to have a hot spot or gradient.

It has to be done in post somehow.

The OP said that the images already had the "effects" on the BG when the images were uploaded to the computer. I'm still of the opinion that some sort of projector was used to create the bg for the images. That would explain why where were no dedicated lights for the bg. Just my 2 cents, though.

I believe what he did was since the background is one color is he setup a script or action in photoshop that will do all the steps to key out the solid background and choose a background of his choosing to replace it. That's probably why it looks like it comes up like that automatically.

they are projected...

You can change background colors by using a hue/saturation layer. Pick a particular color and adjust its hue for several combinations. If it effects other parts of the picture......use a layer mask to paint away the effect to that area. Works pretty smooth actually.

Could be photoshop - with a simple 'replace color'. Looks like he blurred some of the background (especially around the bed) to soften some of the color changes...

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