Sigma Corporation of America (Ronkonkoma, NY, www.sigmaphoto.com) is celebrating its 50th anniversary with a new online community where Sigma users can interact and learn about the company’s history. The frequently updated website features videos about the company and its products, advice from Sigma Pros, links to social media channels, and photo sharing and tagging via Flickr. It also features product giveaways, in which participants must enter each monthly contest for a chance to win. More information: www.Sigma50th.com.
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