Focal Distance 21mm 35mm format value 32mm equivalent (when PENTAX APS-C size SLR camera is installed) Open squeezing F2.4 minimum aperture F22 lens configuration 11 pieces of 8 groups angle of view (diagonal) 92 ° (PENTAX 35 mm size SLR camera installed), 68 ° (PENTAX APS-C SLR camera installed) mount type kaf4 The shortest shooting distance 0.18m Maximum shooting magnification 0.26 times Filter diameter 67mm Light amount adjustment method electromagnetic aperture, completely automatic squeezing Number of squeezed feathers 8 cards circular aperture (21mm → F2.4-4.5) Aperture ring None Syujin None Lens food Fixed Lens cap O-LW74A (attached) Lens case p80-150 (attached) Maximum diameter x length about 74mm x about 89mm mass (weight) about 416g Use temperature -10-40 ° C Used humidity 85%or less (not condensation) bundled accessories Lens cap O-LW74A, lens mount cap K, lens case P80-150 Others HD coating SP (Super Protect) Coating WR (drip -proof structure) Quick Cinift Focus System (QFS/A) DC motor Body color (silver)