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	March 3, 2011 Breaking news from America's top photo magazines From the Forums: What are some of the best ways to convert an image to black and white? Our readers share their thoughts. Join and Contribute!

	SHARE: Monthly Photo Challenge Enter for a chance to win $100 and be featured in the magazine! Gallery: My Project, Drawing on Creativity Ben Heine makes art the old fashion way, with a pencil and...camera. Behind the Scenes: Artists & Alchemists Don't miss this upcoming documentary on photo processes from the pasts and artists who are reviving them. Apple iPad 2 Has Two Cameras, Still No SD Slot The latest creation out of Cupertino is thinner and lighter, but at what cost? Photo of the Day Think your photos have what it takes to be named Photo of the Day? Then upload your best shots to our Flickr page. See the whole gallery here TECH SUPPORT Lens Basics 101 Is it better to use a full-frame lens on a DSLR that has a smaller sensor? No. Since the smaller sensor records only the central "sweet spot" of the image circle, full-frame lenses theoretically should give you images that are sharper around the edges than digital-only lenses do-but there's scant evidence of that in the real world. Full-framers have some benefits: Retaining their utility if you upgrade to a full-frame DSLR with the same mount, for instance. But the crop factor means they can't give you an ultrawide angle of view-that 17mm lens becomes a 25mm equivalent on a camera with an APS-C-size sensor. So, what does a range such as f/3.5-5.6 on a lens mean? On less-expensive zooms, the lens gets slower as you move to longer focal lengths. On an 18-55mm f/3.5-5.6 lens, for instance, you can set an aperture as big as f/3.5 at 18mm, but at 55mm the widest you can set is f/5.6. At an intermediate focal length-say, 35mm-the maximum aperture will be around f/4.5.

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