The L indicates that it is a lithium fluoride lens. This material has a higher refractive index than glass and less dispersion. This means that the lens can be made with less distortion and almost no distortion. It uses an aspherical numerically computed figure that makes a better lens than the combination of spherical lenses that is usually used. This makes the lens lighter than it would otherwise be and with almost no spherical distortion. They are rather expensive though. I think about $1000. Chris -----Original Message----- From: owner-photoforum@xxxxxxxxxxxxxxxxxx [mailto:owner-photoforum@xxxxxxxxxxxxxxxxxx] On Behalf Of Lea Murphy Sent: 10 August 2010 14:34 To: List for Photo/Imaging Educators - Professionals - Students Subject: Canon 50mm lens comparison Can anyone who might have experience with both pieces of glass give me a compare and contrast of the 50mm 1.8 (super cheap at $99 with very good reviews) vs. the 50mm 1.2 L lens (expensive with excellent reviews). I know there's a significant difference btwn the build quality, the weight and the bokeh. I'm seeking info specifically related to image quality, contrast, yummy L glassness. I have the 1.8 and am considering the move to the 1.2 L. Would like input from users of both as to if the upgrade is significant enough to warrant a change and the expense. Thanks so much. Lea your kids . my camera . we'll click www.leamurphy.com
