Brooks Brothers Blue

I got some olive oil on a Brooks-Brothers Non-Iron shirt and figured it might show some variation looking at the fibers. Surprisingly the difference was only visible at low magnification.  At high mag and through the scope it was difficult to impossible to see a difference in the oil stained fibers.

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Images captured using:
Nikon SMZ-1500
DS-L3-Fi2
Fiber Optic Ring Light