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Asahi Opt. Co. 85mm f/4.5 Ultra-Achromatic-Takumar (1)


Andrea B.

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Asahi Opt. Co. 85mm f/4.5 Ultra-Achromatic-Takumar (1)

Blades: 6

Elements: 3 fluorite, 2 quartz, 5 groups

FFD: 45.46mm

Filter: 49mm

Mount: M42

Note: The serial number of this lens has been deleted in the photo.

 

For those folks curious about the UAT, this manual focus lens was prototyped in 1966 by Asahi Optical Co. (which became Pentax which became part of Ricoh). It was manufactured between 1973-1977. The UAT has an M42x1 screw mount and requires a 45.46 mm flange focal distance to attain infinity focus. Thus the UAT is easily adapted to short FFD mounts: Pentax, m4/3 (19.25 mm) or Sony E (18 mm). I'm not sure about the Canon EF/EFS mount with its 44 mm FFD, but I'm sure there are adapters out there somewhere for that 1.46 mm gap. The UAT is a no-go on a Nikon (46.5 mm) for infinity focus. Still useable for Nikon close-work though.

 

UAT_v1_20160829wf_49553.jpg

 

UAT_v1_20160829wf_49549.jpg

 

The lens has an Auto mode and a Man mode when used on older Pentax camera bodies.

UAT_v1_20160829wf_49563.jpg

 

UAT_v1_20160829wf_49555.jpg

 

UAT_v1_20160829wf_49561.jpg

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