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Takumar 105 mm f/ 2.8 Preset Lens M42
Format: 35mm SLR
Type: Prime lens
Focusing: Manual Focus (MF)
Lens mounts: M42
First year of production: 1958
Last year of production: 1961
Optical design: 4 elements in 4 groups
Specifications:
Focal length 105mm
Max. aperture f/2.8
Min. aperture f/22
Blades 8
Min. Focus (m.)1.2
Filter Ø (mm.) 46
Weight (gr/oz) 280/9,9
Length (mm/in) 75/3
Additional information:
The Asahi (Pentax) Takumar 105mm f/2.8 Preset is a moderate telephoto prime for 35 mm M42 screw mount SLR cameras.
This is Takumar's earlier version (1958-1961). The lens features an aperture preset mechanism (Preset) and a single-layer coating. In 1962 the Super-Takumar lenswas released employing a different 5/4 optical formula.
Mechanical quality 5.00
Optical quality 4.33
Usability 4.00
Bokeh 4.67
Overall lens rating
4.33
more see
http://allphotolenses.com/lenses/item/c_2483.html
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Takumar 105mm F2.8 (model 1)
Takumar/Auto-Takumar 105mm F2.8
Sharpness 8.3
Aberrations 8.3
Bokeh 9.0
Handling 9.0
Value 9.3
Read more at: https://www.pentaxforums.com/lensreviews/Takumar-Auto-Takumar-105mm-F2.8.html#ixzz5IfjVKrpL