Lens hoods named “Takumar 6X7” came in square shape only. They are available in the two different mounts: bayonet filters mount and screw-in mount. Originally Pentax produced only bayonet mount hoods for the each focal length. So, different hoods for the 90mm and 105mm focal length were made. But some time later both of them were replaced by the unified hood and the mount became screw-in type.
The bayonet mount hoods are compotible only with other bayonet mount accessories like gelatin filter frames or bayonet filters while the screw mount filters are compotible with both mounts. And, of course, all Takumar 6X7 hoods fully made of metal.
|Takumar 6X7 1:3.5 55mm||100mm||55mm f/3.5|
|Takumar 6X7 1:4.5 75mm||82mm||,|
|Takumar 6X7 1:2.8 90mm
Takumar 6X7 1:2.4 105mm
Takumar 6X7 1:2.8 90mm 1:2.4 105mm
|67mm||90mm f/2.8 (LS), 90mm f/2.8, 105mm f/2.4|
|Takumar 6X7 1:4 135mm 1:2.8 150mm||67mm||135mm f/4 Macro,|
The 105mm hood is a little taller while having the same length and width as for 90mm hood. But it should cause vignetting.
Another one unified hood was made for the 135mm and 150mm lenses, but it is available in both mounts: bayonet and screw-in. Anyway it is exactly the same hood, the only one difference is in mount. Dimensions (L×W×H, mm): 98x82x60.