I took this photo last Wednesday, December 19th around high noon while I was passing through Patterson (just uploaded the photo to my computer tonight). Shot it with my Nikon SLR (DX format) using a 300mm lens and a polarizer filter (to help cut down the glare from the haze). The photo is NOT cropped.
As this photo shows, the Sierra crest and Half Dome can be clearly visible from the west side of the Central Valley when air is (more or less) clear and the visibility is excellent. Unfortunately, those type of days in the Central Valley can be pretty rare at times. But if one knows where to look, one can spot Half Dome pretty easily just using a standard 8x binoculars.
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