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Ultra-Achromatic-Takumar
85mm f/4.5
The
new
Ultra-Achromatic-Takumar
85mm f/4.5 is corrected against chro¬
matic aberration from ultraviolet to
infrared wavelength bands. Not only is
it a high resolution lens for visible light
photography, but also it gives unmatch¬
ed optical performance in ultraviolet
and infrared photography.
The lens uses no glass; it uses fluorite
and quartz. This unique lens answers
some of the optical quality and perform¬
ance problems in ultraviolet and infra¬
red photography. Although it is superb
for infrared and visible light photogra¬
phy, its main design emphasis is placed
on ultraviolet photography at a close
distance.
It is corrected against chro¬
matic aberration from 220m;/ to 1000m//,
and photographic tests without filters
show good results within these wave¬
length bands.
Lens element..
Minimum aperture
Minimum distance
Angle of view.
Weight.
. 5
. f/22
. 2 ft. (0.6m)
. 29°
8.7 ozs. (248 gr.)
Ultra-Achromatic-Takumar
300mm f/5.6
llh-l-o
The
new
Ultra-Achromatic-Takumar
300mm f/5.6 uses glass and fluorite ele¬
ments to achieve high resolution and
extreme chromatic aberration correc¬
tion over a wide range wavelength. It
is corrected against chromatic aberra¬
tion from 400m// up to 850m//.
The
visible portion of the spectrum extends
from 400m// to 700m/(. This lens is ex¬
cellent for telephotography in the visible
and infrared portion of the spectrum.
The use of fluorite elements allow a
design that is very compact for its focal
length and sharp in contrast and de¬
finition.
Lens element.
Minimum aperture
Minimum distance
Angle of view.
Weight .
. 5
. f/22
16 ft. (4.85m)
.
8
°
29 ozs. (825 gr.)
33
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