How do you do that Spotlight/Light Beam effect

Started 2 months ago | Discussions thread
Ed Shapiro
Ed Shapiro Regular Member • Posts: 332
Re: How do you do that Spotlight/Light Beam effect

elliotn wrote:

Ed Shapiro wrote:

I suspect it is a post-processing job. If an optical spot was used to illuminate the subject, it would not be as sharp around the edges on the background- unless she was almost touching the background.

She's clearly very close to the background. But even if she wasn't, why does that preclude getting a sharp edge on the background?

The shadow on the background indicates that the light was coming in at an off-camera angle of about 30- degrees- that would not cast a perfectly symmetrical circle on the background.

It seems to me that the light is only slightly above camera - maybe 5 or 10 degrees off the horizontal axis. That would give the kind of circle we are seeing.

Yes- this goes to my point of an artificial effect- there is the disunity of lighting- the light on the subject and the light on the background do not coincide. No matter was the off-camera ligt is coming from, it is not coaxial with whatever is lighting the background.

Hey- I can and have done similar effects with a front'projectin beam-splitter system and a retro-reflective (Scotchbright) background screen.  The trick was to make the background visually compatible with the lighting on the subject otherwise, the effect appears artificial.

Ed Shapiro- Commercial and Portrait Photographer. Ottawa, Ontario Canada

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