Birth to 1 year: 1  In the early months, hold your baby close and read, talk and sing to her. 2  By 3-6 months of age, your baby will start to enjoy looking at mirrors and pictures of faces, shapes, colors.  By 6-12 months of age, your baby will sit in your lap, look at the pictures, touch the book, and put the book in her mouth.
From Wikipedia, the free encyclopedia. Sigma 30mm f/1.4 EX DC HSM mounted on a Canon EOS 40D, hood attached. The Sigma 30mm f/1.4 EX DC HSM is a wide-aperture photographic lens made by the Sigma Corporation, equipped with Hyper Sonic Motor (abbreviated HSM, Sigma's trade name for photo lens focusing technology using ultrasonic motor).
Sigma (upper-case Ï, lower-case Ï, lower-case in word-final position Ï; Greek: ÏÎ¯Î³Î¼Î±) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals, it has a value of 200. When used at the end of a word (when the word is not all caps), the final form (Ï) is used, e.g. á½Î´ÏÏÏÎµÏÏ (Odysseus); note the two sigmas in the center of the name, and the word-final sigma at the end. 1  1 History.  1.1 Etymology.