[M42] AUTO RIKENON 55mm F1.4 Review – Big and heavy lens made by Tomioka Optical

Hello, my name is hiron. I am a vintage lens addict. (Twitter / Youtube)

This time I will review AUTO RIKENON 55mm F1.4.

Previously, when I reviewed the REVUENON of M42 mount, I found out that there is an M42 mount lens made by Tomioka Optical.

I understood that this lens was made by Tomioka Optical and purchased it at a Japanese online auction.

AUTO RIKENON 55mm F1.4 is like a lens made by Tomioka Optical.

AUTO RIKENON 55mm F1.4 was released around 1964 as a lens for Ricohflex TLS.

I long for a vintage lens made by Tomioka Optical. The reason may be that the first XR Rikenon 50mm F2 (PENTAX K mount) I got was so.

This blog (Japanese) confirmed that this lens is made by Tomioka Optical.

Unfortunately, there is no “TOMIOKA” on the nameplate of this lens.

Select a mount adapter (to use AUTO RIKENON 55mm F1.4 with a digital camera)


A mount adapter is required to use the vintage lens with current digital cameras. AUTO RIKENON 55mm F1.4 is M42 mount lens.

If you want to use AUTO RIKENON 55mm F1.4 with PENTAX digital SLR, you need a mount adapter called M42-PK. It is a thin adapter.

If you use this lens with a SONY mirrorless camera, you will need a mount adapter called M42-NEX.

I’m introducing the mount adapter installation procedure on YouTube video, so please refer to it.

Use a mount adapter suitable for your digital camera.

Photo samples with AUTO RIKENON 55mm F1.4 attached to PENTAX K-7

In early August 2017, I attached AUTO RIKENON 55mm F1.4 to SLR PENTAX K-7 and went to Kawagoe. The recent summer in Japan is very hot. That was also the case.

Kawagoe is a city that retains the features of the Edo period in Japan. Kawagoe Daishi Kitain is a building that has been relocated from Edo Castle.

From Kawagoe Station, I walked around Kawagoe Castle Honmaru Palace and Kawagoe Daishi Kitain Temple.

Kawagoe Station Location


It is also popular to walk around Kawagoe with a kimono.

Kawagoe Castle Honmaru Palace

Kawagoe Castle Honmaru Palace Location


This is Kawagoe Castle Honmaru Palace. It was a very hot day, so the tourists were resting here.

Pictures taken with this lens are quite sharp.

Kawagoe Daishi Kitain Temple

Kawagoe Daishi Kitain Temple Location


This is Kawagoe Daishi Kita-in. Some of these buildings have been relocated from Edo Castle.

Despite the large lens of the AUTO RIKENON 55mm F1.4, its Bokeh was not that big.

AUTO RIKENON 55mm F1.4 Review Summary

This time, I reviewed AUTO RIKENON 55mm F1.4.

I bought this lens because I admired Tomioka Optical lenses. It was very heavy and big, but surprisingly Bokeh in the photo was small. On the other hand, this lens was easy to focus on and easy to use.

And Kawagoe is a recommended tourist destination with traditional Japanese architecture.

Thank you for reading to the end.

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