The FA 77mm is specifically designed for portrait photography and accurately reproduces the tones, colors and texture of the subject's skin, clothes and accessories as well as assuring an excellent rendering of highlight and out of focus areas. It also features PENTAX's exclusive FREE (Fixed Rear Element Extension) focusing system to ensure sharp, crisp image reproduction over the entire focusing range.
Lens mount:- PENTAX KAF mount
Lens construction:- 7 elements in 6 groups
Angle of view:- 31.5deg
Diaphragm control:- Fully Automatic
Number of aperture blades:- 9
Maximum aperture:- F1.8
Minimum aperture:- F22
Metering system:- TTL open-aperture metering
Minimum focusing distance:- 2.3 ft. (0.7m)
Filter size:- 49mm
Maximum magnification:- 0.14X
Dimensions (diameter x length):- 2.5 x 1.9 inches (64mm x 48mm)
Weight (w/o hood):- 9.5 oz. (270g)