SMC Pentax-FA 28-70 mm f/ 4 AL Lens
Format: 35mm SLR
Type: Zoom lens
Focusing: Auto Focus (AF)
Lens mounts: Pentax K
First year of production: 1996
Last year of production: 2000
Optical design: 9 elements in 7 groups
Average price: $172
Specifications:
Focal length 28mm - 70mm
Max. aperture f/4.0
Min. aperture f/22
Blades 8
Min. Focus (m.) 0.4
Filter Ø (mm.) 52
Weight (gr/oz) 240/8,5
Length (mm/in) 66/2,6
Additional information:
The SMC Pentax-FA 28-70 mm f/ 4 AL is a standard autofocus zoom lens for film and digital SLR Pentax K cameras.
The optical scheme includes aspherical elements, which is positive for contrast and minimizing aberrations.
The front filter rotates on focusing, which makes it difficult to use gradient and polarizing filters.
Macro scale: 1:4

User reviews
Mechanical quality 3.50
Optical quality 4.00
Usability 3.75
Pricing / Value 4.25
Bokeh 4.00
Overall lens rating 3.90
more see
http://allphotolenses.com/lenses/item/c_568.html

old lens
function work, but it is not a new lens