During the 1950s twin-lens reflex (TLR) camera boom, the Yashicaflex, along with the Ricohflex, was a popular camera. This is a listing for the Tomioka TRI-Lausar 80mm F3.5 M39 mount lens, which was equipped on the Yashimaflex released in 1953. The Tomioka TRI-Lausar 80mm F3.5 was a popular lens, as it was supplied to various camera companies. I used it by making an M39 mount adapter with a lathe. Since it is a view lens for a TLR, it does not have an aperture, but because it has the same lens configuration as the taking lens, shooting at wide open aperture is the same as the taking lens. The exterior has few scratches, and the optics also have almost no scratches, mold, or dust, and it forms a sharp image even at wide open aperture. This lens is not suitable for those who frequently use the aperture. A metal rear cap is included. Although it is an old lens, it has good color rendition even at wide open aperture, and the subject stands out from the background, producing a very refined image. Thank you for your consideration.