Vivitar 24 mm f/ 2.8 MC WIDE ANGLE Manual Focus Lens Pentax KA mount
Format: 35mm SLR
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts:Pentax K, A
can set aperture at camera
Optical design: 9 elements in 8 groups Specifications:
Focal length 24mm
Max. aperture f/2.8
Min. aperture f/22
Blades 6
Min. Focus (m.) 0.19
Filter Ø (mm.) 52
Weight (gr/oz) 250/8,8
Length (mm/in) 67/2,6
photo 1 is sample of color,outside of focus, f2.8 (apsc camera, not ff camera).
photo 2 is sample of use nearst ( 19mm) distance marco take,f2.8 (apsc camera, not ff camera).
made by Cosina
same as Cosina 24mm f/2.8 MC MACRO
details see
http://www.pentaxforums.com/userreviews/cosina-24mm-f-2-8-mc-macro.html