In addition to the optical design that boasts a bright F -number, it is equipped with a high -speed AF combined performance and a shutter speed of 4.5 steps of hand blurring function by linear motor drive.It is a reliable one that does not have tough shooting conditions.All elements adopt high -performance glass lenses.In particular, the use of two ED lenses, including one super ED lens that has a performance comparable to a fluorite lens, has been well -corrected for the chromatic abolition generated in the long focus area.Sharp and rich depiction can be expected throughout the zoom.- lens configuration 10 groups 14 pieces (1 aspheric lens, 2 abnormal distributed lenses) Focal L Because: F = 55-200mm (35mm format: 84-305mm equivalent) angle of view 29 °-8.1 ° Maximum caliber ratio (open aperture) F3.5 -F4.8 minimum aperture F22 aperture format Number of feathers 7 sheets (circular aperture) step step 1/3 step (17 steps in total) shooting distance range Standard 1.1m - ∞ (whole zoom area) Macro 1.1m -3m (whole zoom area) Maximum shooting magnification 0.18 times (tele end) External dimensions (maximum diameter x length (approx.)) 75mm x 118mm (wide end)/177mm (tele end) * From the tip to the mount reference surface mass (approx.) 580g * Not included lens cap and food Filter size 62mm