Lighting a reflective subject

Joined
Jan 26, 2005
Messages
1,011
Location
San Jose, CA
I landed a small job, taking data sheet photos. The PC boards were easy, but the assemblies were a killer. Here's the beast I had to work with.

DSC2893-ed-XL.jpg
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The body needed more light than the face, which had to be dark with white lettering. That called for 2 shots with different exposures, blended together in photoshop. This was my lighting setup.

reflective-1.jpg
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But the dial was highly reflective, leading to results like this.

DSC2893-ed-rev3-XL.jpg
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The client wanted the dial to be legible, and I found it impossible to light evenly with umbrellas, so I switched to indirect reflective lighting.

reflective-2.jpg
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But even then, the uneven light on the outer ring was unacceptable.

DSC2893-ed-rev2-XL.jpg
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I fiddled with the positions and intensity of the lights until I found the root problem... which wasn't the lights at all. It was the angle of the ring. It had to be exactly head on with the camera. After adjusting the up/down and side-to-side angles, I finally was able to get the flat lighting the shot required. I took the successful shot of the dial, and combined it with the shot of the assembly and the shot of the face. Some background simplification, and I came up with this.

DSC2748-ed-2-XL.jpg
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It took me several hundred shots and the better part of a week to get the final result. I hope this story will keep you from going through such a painful process.
 
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Joined
Oct 20, 2009
Messages
2,815
Location
Alabama
Nicely done Frank, you might want to look into the book light science magic,its a great ref. for shoot things of this nature.
 

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