It’s not an internally focusing lens, since the inner barrel extends at shorter focus distances. However, the filter thread doesn’t rotate, making for easy use of ND grads and circular polarising filters.
The manual focus ring is quite narrow, but operates smoothly and enables precise adjustments. The lens also features a focus distance scale, which is useful in landscape photography for setting the hyperfocal distance.
The aperture ring benefits from a locking switch to keep it fixed at the f/22 setting. This enables aperture control direct from the camera in PASM and other shooting modes.
Elements/groups: 6/6 Aperture range: f/2.8 to f/22 Autofocus type: Camera-driven Minimum focus distance: 0.25m Maximum magnification: 0.18x Filter thread: 52mm Dimensions: 65x45mm Weight: 205g