Originally posted by foto guy An astute observer in the "other" forum noticed moiré in the gray building rooftops on the left side of the pic of the hotel.
Possibly the same astute observer over there also usefully remarked:
Quote: Moiré is the result of two overlapping grid patterns. The subject's grid pattern is the roof shingles, which may produce moiré when superimposed on the sensor's grid pattern. Similarily, the end image pattern also interacts with the grid pattern of your monitor ... Changing the relationship between the two grid patterns (subject to sensor, images to monitor grid), also changes how they interact with each other, hence creating or not a visible moiré pattern. Hence rotating the camera or the image, changing FL or distance to subject all have an impact on the way the grid patterns interact with each others. Moiré resulting from your monitor grid will not show on a print for instance, while moiré resulting from the sensor will. The tough part when assessing moiré is the determination of it's origin i.e. the original image or the rendering of that image on a given monitor at a given magnification.
Also makes me wonder what impact adding another pattern into the mix when doing landscapes (in the form of a circular polarizing filter, for example) may have on scene elements like the roof shingles.