This is a vintage manual macro zoom 70-210 mm f4-5.6 Zoom lens with a Pentax K mount. It is a parfocal lens, meaning, that it holds focus while zooming in or out. It was made in Korea and was sold in K-Mart stores about 1984 to 1986. The lens does not have the name Focal on the front ring, but the QTII designation indicates that. It is a typical vintage push-pull focus and zoom, and it is also compact-- retracted, it stands only 4.5 inches with caps. It is actually a KR mount, which is the Ricoh variant of the K-mount, which has an extra locking pin (this example) and electrical contact. The KR mount works fine on vintage K-mount cameras (the box states for Pentax PK, KA and Ricoh RK cameras), and is easily adaptable to modern digital cameras with simple adapter rings. The pin on some KR lenses can be an issue with modern digital Pentax cameras, but on the pin on this lens retracts completely when dialed out of the Auto setting.
This lens is in overall very good condition and comes with the original box (but torn top flap) with foam protective insert and lens guide. The aperture is snappy and the blades are oil free, although not perfectly symmetrical (see stopped down view). The lenses have no scratches or fungus, and the push pull focus is smooth. There are some tiny specks of dust inside, but the most notable feature is that the coating on the outer lens is blotchy, and this is easy to see when the light is at a certain angle (see picture), and this gives the front lens a hazy reflection when looked at from the side. This does not seem to affect image quality, and the sample image is a macro image of a bunch of parsley on a Canon 550D (18MP sensor), with an inset of 100% crop. This is a fun lens to try if you a looking for that vintage zoom telephoto look, in a compact lens design that can also achieve 1:4 macro shots at a distance of only 34 inches.
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