Archived posting to the Leica Users Group, 1998/08/21

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Subject: [Leica] TID>Minilux w/Hyperfocal Distance
From: Bud Cook <budcook@ibm.net>
Date: Fri, 21 Aug 1998 08:09:12 -0500

Thanks Leonard, how did you learn about this feature?
Bud

Leonard K. Nicholson wrote:

[Snip]

>
>
>
> The Leica Minilux is a terrific camera.  It also has a unique and
> undocumented feature of being able to set hyperfocal distance at any
> Aperature.
>
> The rule of thumb is to align the Green AF Dot of the focus dial with
> the selected Aperature selected by the White Function Selector.: this
> sets a manually selected distance which just so happens to be the
> hyperfocal distance for the selected aperature.
>
> Lets look at the examples:
>
>         =95       Set Aperature to F 4 by moving the Function Selector =
to F4, then
> align the Green AF Dot of the Focus Dial to the selected apperature: th=
e
> distance indicated is *. Depth of field is 11.78m - *.
>
>         =95       Set Aperature to F 5.6 by moving the Function Selecto=
r to F5.6, then
> align the Green AF Dot of the Focus Dial to the selected apperature: th=
e
> distance indicated is 13. m. Depth of fiield is 5.18m - *.
>
>         =95       Set Aperature to F 8 by moving the Function Selector =
to F8, then
> align the Green AF Dot of the Focus Dial to the selected apperature: th=
e
> distance indicated is 7 m. Depth of field is 3.23m - *.
>
>         =95       Set Aperature to F 11 by moving the Function Selector=
 to F11, then
> align the Green AF Dot of the Focus Dial to the selected apperature: th=
e
> distance indicated is 5 m. Depth of field is 2.31m - *.
>
>         =95       Set Aperature to F 16 by moving the Function Selector=
 to F16, then
> align the Green AF Dot of the Focus Dial to the selected apperature: th=
e
> distance indicated is 3.5 m. Depth of field is 1.63m - *
>
> The exception to prove this rule occurs when you set the Aperature to
> F2.4 -- you cannot align the Green AF Dot to the selected 2.4 aperature
> so just set the distance manually to * (note the Green AF Focus dot
> follows at F4):  depth of field is 18.78m - *.
>
> Pretty neat stuff!
>
> Comments anyone?
>
> Leonard K. Nicholson                         <mailto:nicleok@sdllc.com>
>
>