Looking for guidance or advice on which wide angle lens to purchase for use with my 1D MK III.
Currently looking at Canon 17-40mm F4 L or perhaps Sigma 12-24 f4.5-5.6 EX DG Aspherical HSM.
Given that I already have the 24-70mm F2.8L, it seems a lot of money to gain just 7mm at the bottom end if I went for the Canon lens. Thus lured by the Sigma, as this fits nicely as a complete lens by its self. Has anyone got any experience of using this lens on a 1.3x crop body?
Currently looking at Canon 17-40mm F4 L or perhaps Sigma 12-24 f4.5-5.6 EX DG Aspherical HSM.
Given that I already have the 24-70mm F2.8L, it seems a lot of money to gain just 7mm at the bottom end if I went for the Canon lens. Thus lured by the Sigma, as this fits nicely as a complete lens by its self. Has anyone got any experience of using this lens on a 1.3x crop body?