Yashica Pentamatic Lenses

Chris and Carol

Yashica Pentamatic ’35’

We recently acquired this lens for our Yashica Pentamatic collection. Why is it important? It’s a great find because it’s the first time we’ve encountered a lens with a lower serial number than one pictured in an advertisement (in this case, the first-ever ad for the Pentamatic, June 1960). We know it is total nerd stuff, but that’s what makes collecting fun.

The lens was made for Yashica by Tomioka Optical, which at the time made about 90% of all their lenses (TLR, SLR, RF, and Cine).

The lens serial number decodes 59 = 1959, 10 = OCT, and 0092, the 92nd lens made since production started.

In the second image, the other lens was made in December and was the 1,630th made. Tomioka was busy producing these lenses long before Yashica released the Pentamatic in March 1960. The first Pentamatic bodies were made in January.

The third image shows an early Yashica Tominon Super Yashinon-R f/2.8 3.5cm wide-angle lens SN 350246. The date code was dropped in favor of a simpler code: 35 = 35 mm, and 0246 is the sequence number since the start of production.

The ad shows a lens with a higher production number than the lens we own. 92 indicates it was made in the first batch of 100 lenses.
The October lens is on the left and the December lens is on the right. No November lenses were made.
From an early batch of wide-angle lenses from Tomioka Optical. This one is number 246.
A fast lens from Tomioka. The f/1.2 55mm lens which was made much later in the M42 screw mount.

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