Focal length (35mm format) 100mm35 mm share value 153mm equivalent (when PENTAX APS-C size single-lens reflex camera is installed) open aperture value F2.8 minimum aperture F32 lens configuration 10 8 groups angle of view 24.5 ° (PENTAX 35 mm size single-lens reflex camera mounting), 16 ° (PENTAX APS-C size single-lens reflex camera installation) mount type kaf The shortest shooting distance 0.303m Maximum shooting magnification 1.00 times Filter diameter 49mm Light amount adjustment method Completely automatic squeezing Number of squeezed feathers 8 cards circular aperture (100mm F2.8-F5.6) Aperture ring None Syujin None Lens food PH-Rbe49 (attached) Lens cap O-LC49 (attached) Lens case S80-120 (attached) Size (maximum diameter x length) 65mm x 80.5mm mass (weight) about 348g (about 387g with hood) Use temperature -10-40 ° C Used humidity 85%or less (not condensation) bundled accessories Lens Food PH-RBE49, lens cap O-LC49, lens mount cap K, lens case S80-120