Minolta MGs 

Depth of field scale

Lens opening -- Distance in feet

Without auxilliary lens:

       f2.8 -- 8.75 ft. - 16.75 ft.
       f4 -- 7.85 ft. - 20.85 ft.
       f5.6 -- 6.9 ft. - 31.85 ft.
       f8 -- 5.95 ft. - 124 ft.
       f11 -- 4.95 ft. - infinity
       f16 -- 4.1 ft. - infinity

With built-in close-up lens:

       f2.8 -- 3.7 -4.4
       f4 -- 3.5 - 4.7
       f5.6 -- 3.2 - 5.1
       f8 -- 3.0 - 5.75
       f11 -- 2.9 - 7.1
       f16 -- 2.5 - 10.8

With 80cm close-up lens (in inches):

       f2.8 -- 29.5 - 33.75
       f4 -- 28.75 - 34.75
       f5.6 -- 27.35 - 36.5
       f8 -- 26.5 - 39
       f11 -- 25 - 43
       f16 -- 22.75 - 51.5

With 40cm close-up lens (in inches):

       f2.8 -- 15.25 - 16.25
       f4 -- 15 - 16.5
       f5.6 -- 14.75 - 16.75
       f8 -- 14.5 - 17.5
       f11 -- 14 - 18