| The new LEICA APO-SUMMICRON-M 75mm f/2.0
ASPH is designed to be universal in its usage, as good
at infinity as in the close range and at all apertures
but its very natural rendering of details (very low distortion
and vignetting) as well as its performance at open aperture
and at close range make it particularly suitable for lively
available light portraits or to isolate part of the picture
when doing a reportage.
The very natural looking perspective of this focal
length make beautiful portraits possible with a three-dimensional
feel to them. Decisive image elements can be emphasized
without the image losing its expression of true reality.
The optical performance is excellent at wide-open aperture.
As the MTF curves show the contrast reproduction only
slightly increases by stopping down. The closest focus
distance is 0.7 m (27 in.) against 1m for the 90mm general-purpose
lenses.
A new velvety matt finish makes the Leica APO-SUMMICRON-M
75mm f/2.0 ASPH immune to flare. Distortion is not a
concern and barely visible in real life. Thus the images
taken with this Summicron are as close to reality as
you can get.
Outstanding close-up pictures are made possible via
a floating element. This lens element changes its relative
position to the rest of the optical system while focusing.
The real challenge was to integrate this extra mechanism
in the compact form of a lens whose mount was established
in 1954 and whose silky focusing needed to be maintained.
Both targets have been met.
All components are carefully matched to each other
with passionate perfection and crafted meticulously
by hand. This guarantees the consistent quality of every
single lens.
Only high quality material, such as brass, aluminum
and optical glass are good enough for Leica.
The new Summicron is comprised of seven lens elements
in five groups, for which specific types of glass are
used: glass with anomalous partial dispersion, fluorite
glass, glass originating from the former Leitz glass
laboratory, glass with a very high refraction index
as well as an aspherical element. |