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Chapter 7 Leica R-Lenses 10
__Flare properties
I made a special study of the flare properties of the lens, as
this is the one area where lenses have to go 'a bout de
souffle'. Veiling glare is hardly visible at all focal lengths,
implying there is no loss of contrast when the background
is much brighter than the subject itself. When the sun is
obliquely shining into the lens, and is behind the subject,
one can see some secondary reflections of small extent in
the picture, but the well-known diaphragm blade reflections
are not visible. With the sun flooding the image, there is of
course a bleaching out of the picture details, but in such a
situation one would change the position slightly to evade
this direct confrontation with the sun.
In general I would say that for veiling glare the lens is better
than the average Leica lens, and for secondary reflections it
is slightly better.
__Conclusion
The new lens is an outstanding performer at all focal
lengths. The compact size, the ergonomics and the perfor-
mance are all balanced into what economists call a Pareto
optimum. Any change in one of the parameters will degrade
the quality of the whole. This actual image quality can only
be guaranteed during production and assembly where the
very tight tolerances and adjustment methods demand
workmanship of the highest level.
The image quality of the LEICA VARIO-ELMARIT-R 28-90
MM F/2.8-4.5 ASPH is generally above what one expects
from high grade fixed focal lengths and the focal length
range secures it a premium role in the Leica R lens range.
LEICA VARIO-ELMARIT-R 28-90 MM F/2.8-4.5 ASPH
image: Oliver Richter