Purchase a FotoSharp hyperfocal distance slide rule
and their 35mm DOF chart. Both are inclosed in pro-
tective plastic, are smaller than 8x4 inches and will
prove to be one of your most used accessories.
On the slide rule: set your f-stop under infinity and
read off your focus distance and minimum in-focus dis-
tance. Or, set the f-stop opposite your focus distance
and read off the near and far in-focus distances.
The chart has discrete lookup points for lenses in 100mm
increments and each standard f-stop from 2.8 to 16.
The slide rule covers lenses in the 20-100mm range while
the chart covers 100-600mm.
They advertise in the mags but I believe I was able to
order on the Web though I cannot locate their URL at the
moment.
....patrick
