Here is a semi-candid shot of my oldest son at a recent family gathering. The sunlight coming in from the large windows and diffused by the curtains was just gorgeous. And he decided to pose for me (his usual response is to run away or make a face when I point the camera at him

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K10D + FA77/1.8 Ltd
f/2.0, ISO 400, 1/250s (cropped to about 2/3 of the original shot)