Reflective floor on white backdrop

Started Mar 14, 2013 | Discussions thread
Sailor Blue
Sailor Blue Forum Pro • Posts: 11,144
Re: Reflective floor on white backdrop

The image you posted has a nice reflection but it also has an exposure problem.  The floor around the subject isn't pure white.

The background illumination needed to be increased and the camera lowered to get more light from the background reflecting off the tileboard. Try shooting with the camera around eye level and kneeling/squatting height (2-1/2' to 3' off the floor) and compare the floor in the images.

It is a balancing act.  You need to get the background bright enough that light from it will reflect and turn the tileboard under the subject pure white but you don't want to make it too bright or you will get lens flare, resulting in a loss of image contrast.

For 3/4 to head shots 1 stop overexposure is fine and safe.  For standing shots you probably will have to go to between 1 and 2 stops of overexposure, but by 2 stops you will likely be getting some lens flare.  When the floor just goes pure white when you shoot from a kneeling/squatting height you have the background right.

Don't expect the floor outside the tileboard to go pure white.  As long as you keep the subjects on the tileboard that is easy to fix.

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