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I want to take a picture of my chair and place it in different rooms or apply different wallpapers in the background without losing the shadows or the lights in the background.

First of all, do I need green screen to be able to do that?

If so, I have taken a picture with a green screen in the background. How should I place the chair in the room or apply wallpaper in the background without loosing the shadow of the chair or the lights in background?

This is the picture:

enter image description here

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    \$\begingroup\$ I initially thought this was a duplicate of How to take product shots on a green screen background?, but there's a difference — that one asks to remove shadows, while this one wants to change the background while preserving them. However, there's some good general advice there which still applies — such as green not necessarily being the best choice for still photography. \$\endgroup\$
    – mattdm
    Dec 26, 2014 at 15:17
  • \$\begingroup\$ Also see other questions in the chroma-key tag. \$\endgroup\$
    – mattdm
    Dec 26, 2014 at 15:22

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You can use use many product for remove green screen. Photoshop, Gimp, PhotoKey.

But to get acceptable results you should follow few rules

  1. Make the background flat, w.o. any shadows and so on
  2. Use it with the foreground objects which do not have naturally green
  3. Do not light (artificial or natural) the green screen or make the light on it as flat as possible
  4. To apply any light on the future background picture you need lights on it, not on green screen
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  • \$\begingroup\$ Your rule #1 directly contradicts what the OP is asking--how to preserve the shadows intentionally... \$\endgroup\$
    – Kev
    Apr 8, 2017 at 12:47

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