RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-00645
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March 23, 2018 at 2:04 pm
#9442
BenchNotes 06301
Participant
Case 16 — Crystal types: sapphire, mineral and acrylic trade-offs for daily wear
On anti-reflective coatings: inner-surface AR cuts glare without wear concerns. Outer-surface AR improves legibility further but can scuff over time, and the scuffs show up as hazy patches in certain light. When comparing two watches, check which surfaces are coated. Spec sheets often just say 'AR coated' without saying where.