Messages

76

Face and Body Scanning / Broad DOF vs image softening due to high f-stop

« on: February 28, 2013, 11:11:52 AM »

Fellow Photoscanners,

I am curious as to your findings about sweet spot for optimum quality of photos, both for building geometry and generating textures. Specifically, while scanning large (human) subjects, higher f-stop helps keep everything in perfect focus, at the price of per-pixel sharpness. On a typical Canon (crop) 55mm lenght (EF-S 18-55 kit lens), would you go f16 and higher? Is broader DOF worthy of softening images overall?

Cheers,

Andrew

77

Face and Body Scanning / Question about indoor lighting setup for scanning props and people

« on: February 11, 2013, 11:55:22 PM »

Hi there!

I am about to start building a lighting setup for scanning props and eventually people.

Will greatly appreciate any and all advice about what works and what doesn't

One of my options would be this: http://www.fsfoto.pl/en/zestaw-oswietlenia-ciaglego-2x85w.html - sorry for weird (for most of you anyway) language - this is essentially twin 85 watt bulbs (continuous, not flash), with 90cm silver reflective umbrellas. One from lower angle and one from above (max 2,1m).
- Does that seem bright enough?
- Would three sets of these suffice or would I need four?
- What about getting those bright bulbs and reflective silver in my shots, would I be better off using semi-transparent light-scattering umbrellas instead? Or some ceiling/floor lighting setup to avoid lights behind photographed subject in my shots entirely?
- Maybe I am better off with non continuous, flash lighting? (although I'd rather avoid having synching issues)

Thanks in advance!

Andrew