Pentax Spotmatic II Ultra-Achromatic Takumar 85mm f/4.5, Ultra-Achromatic Takumar 300mm f/5.6

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 ultraviolet and infrared photography.

The lens uses no glass; it uses fluorite and quartz. This unique lens answers some of the optical quality and performance problems in 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. It is corrected 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 extreme chromatic aberration correction over a wide range wavelength. It is corrected against chromatic aberration from 400mμ up to 850mμ. The visible portion of the spectrum extends from 400mμ up to 700mμ. This lens is excellent 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 definition.

from 220mμ to1000mμ and photographic tests without filters show good results within these wave- length bands.

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.)

Reproduced for Historical & Reference purposes by Paul M. Provencher -	34
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