ASAHI Spotmatic II Operating Manual page 36

Ultra-Achromatic Takumar
85mm f/4.5
The new Ultra-Achromatic-Takumar 85mm f/4.5
is corrected against chromatic aberration from
ultraviolet to infrared wavelength bands. Not only
is it a high resolution lens for visible light
photography, but also it gives unmatched optical
performance in
photography.
The lens uses no glass; it uses fluorite and
quartz. This unique lens answers some of the
optical quality and
ultraviolet and infrared photography. Although it is
superb for infrared and visible light photography,
its main design emphasis is placed on ultraviolet
photography at close distance.
against chromatic aberration
Ultra-Achromatic Takumar 300mm f/5.6
The new Ultra-Achromatic-Takumar 300mm f/5.6
uses glass and fluorite elements to achieve high
resolution and
correction over a wide range wavelength.
corrected against chromatic aberration from 400m
up to 850m . The visible portion of the spectrum
extends from 400m up to 700m .
excellent for telephotography in the visible and
infrared portion of the spectrum.
fluorite elements allow a design that is very
compact for its focal length and sharp in contrast
and definition.
Reproduced for Historical & Reference purposes by Paul M. Provencher -
http://whitemetal.com
ultraviolet and
performance
It is corrected
extreme chromatic
infrared
photographic
show good results within these wave-
length bands.
problems in
aberration
It is
This lens is
The use of
from 220m
tests
Lens element 5
Minimum aperture f/22
Minimum distance 2 ft. (0.6m)
Angle of view 29
Weight 8.7 ozs. (248 gr.)
Lens element 5
Minimum aperture f/22
Minimum distance 16 ft. (4.85m)
Angle of view 8
Weight 29 ozs. (825 gr.)
to1000m and
without filters
34