[Leica] Lens testing

["Martin V. Howard" <marho@ikp.liu.se>]

Ugh!  I've just trudged through the "long lens test" thread.  Apart from
the presence of what now appears to be Peter K's standard teflon-coated
approach to writing messages ;) there seems to be a common theme of
reactions when people write lens tests:

  Option 1: People use quantifiable measurment of certain properties
            of lenses and report these to the LUG.  They get critized
            because their results have nothing to do with "real world
            picture taking".  Scientists know of this as "ecological
            validity".

  Option 2: People use lenses side-by-side and express their assessment
            of the resulting slides or negatives in qualitative terms.
            They get critized for calling things "tack sharp" and not
            using objective measurement criteria.

  Option 3: Anyone writes a test of any lenses.  Peter K selects
            option 1 or 2, depending on the results, to start a
            "discussion"... >;-)

Either this is a subtle form of prodding humour that has, until now,
been lost on the LUG; an attempt to show us the lapse in discerning
patterns of behaviour.

Or...


M.

- -- 
Martin Howard, Grad. Schl. for Human-Machine Interaction,  |
HMI/IKP, Linkoping University, SE-581 83 Linkoping, Sweden.|    Just
Tel: +46 13 28 5741; Fax: +46 28 2579; ICQ: 354739         | say "DOOH"
E-mail: marho@ikp.liu.se; www.iav.ikp.liu.se/staff/marho/  +------------