Sigma 15-30mm In-Store Comparisons
Sigma 12-24mm v Sigma 15-30mm v Canon 17-40mm L v Contax Zeiss 21mm Distagon f2.8 [published 2004] ISO 100 / Full frame Canon 1Ds Mark I with mirror lock up, f8 / 1 second / AWB on a Manfrotto 155 with view camera head, legs locked. All were shot RAW and processed in 8 bit …