Infinite White Background Question

Started Aug 3, 2012 | Discussions thread
Barrie Davis
Barrie Davis Forum Pro • Posts: 21,460
Re: Infinite White Background Question

TiagoReil wrote:

You need to add more light. But it is a balancing act. Generally you add 2 or 3 stops more of light, so from f8, you should have f16 at least on the background.

That is bad advice. You should not use so much. It should be only so much as to clean up the background. Half a stop over the subject brightness is plenty, but it does need to be even if the background is required white all over.

Using more than 1/2 stop excess risks flaring around the outside of the subject, especiaqlly when the background is close. Also large amounts of non-image-forming light passing through the lens from overlit backgrounds will cause flare over the image as a WHOLE, desaturating the subject even AWAY from its edges.

In a nutshell, add between 1/3rd and 1/2 stop, then STOP!

"Ahh... But the thing is, they were not just ORDINARY time travellers!"

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