Reviews and Problems with Sigma 24-60mm F2.8 EX DG
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Sigma’s 24-60mm f/2.8 EX DG Wide Zoom For Film, Moderate Wide Zoom For Digital
1 March 2001
Excerpt: Note the "EX DG" appellation in this new Sigma lens. This signifies a lens that you can use for both film and digital photography, as opposed to Sigma's "EX DC" branding, which can only be used with digital SLRs. The difference is in the image circle each projects. Use a "DC" lens on a film camera and you'll have serious vignetting at the corners.