RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-07181
Home › Forums › News and General Discussion › Main Forum – General Discussion and Forum info › [Demo notebook] QC clinic: photographic evidence and its limits · RWI-07181 › RE: [Demo notebook] QC clinic: photographic evidence and its limits · RWI-07181
January 15, 2020 at 11:23 pm
#55640
TimingNotes 02499
Participant
Case 28 — Disputed observation: is this dial colour shift real or just lighting?
The difficulty is that phone cameras adjust white balance automatically, and blue dials are especially sensitive. Two photos of the same dial under different light can easily look like a 'batch difference'. Any comparison needs both dials in the same frame, under the same light, ideally next to a neutral grey or white reference card.