Sinar F  type_Collectible they have the same name

they have the same name for some reason

But you should know that this adapter will also let you use Pentax M42 lenses

but it was the 90s and things were different

Optics are in excellent condition

Sinar F &nbsptype_Collectible they have the same nameThe Sinar F1 is a sophisticated, contemporary 4x5 monorail camera with indexed movements front and rear, plus a rear standard fine focusing control. Extremely flexible, with plenty of adjustment potential, but also relatively compact: this camera comes with a 12" rail, keeping the whole thing pretty trim for transport (but also restricting usable lenses to about 150 180mm focal length) Also included: a #0 lensboard and a fresnel screen. The fresnel is