Sigma 135mm F1.8 DG HSM
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Sigma 135mm F1.8 DG HSM

Mounted on a Canon 5D Mark III you can get a sense of the physical size of the 135mm F1.8. Again, it features a dust and splash-proof construction. Of all the new Sigma lenses we handled, this one has the heftiest feel to it. It also features a 9-blade rounded aperture.