
And in this picture, my lens was razor sharp. No cleaning or anything in the meantime - and no tripod for this picture. Just f6.3 and a high shutter speed. I suppose I was seeing quantum/saturation effects from the long exposure time and/or vibration even through the tripod. Since my lens's IS doesn't have a tripod-sensing mode, I turn it off on the tripod (as recommended). Perhaps I should leave it on, anyway, and see what happens.
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