Sigma 35-135mm F 3.5~4.5
Autofocus, sliding zoom
Lens construction: 10 groups, 15 elements
Angle of view: 63°-18°
Minimum aperture: 22-27
Minimum focusing distance (m): 1.8 (0.75, in "macro" mode)
Magnification: 1:4
Filter size (mm): 55
Dimensions (diameter x length (mm)): 70x94
Weight: 565g
Read more at: https://www.pentaxforums.com/userreviews/sigma-sigma-af-35-135mm-f3545.html#ixzz7bAx3xYfs
55 mm Filter str.