SIGMA 135mm F1.8 DG HSM Art for Canon
What you have here is a SIGMA-made lens that has a 0.2 magnification ratio. The filter size is 82 mm, good to know if you like to use filters.
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From Ecprof
240954 - 135mm f/1.8 DG HSM Art SLR Telephoto lens Black
£1,551.20
Clifton Cameras
Sigma 135mm f1.8 DG HSM Art Lens - Canon
£1,199.00
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