Maintenance Report

Lens design part 7 !



at first

I’m sorry

Because we can’t speak english

I am using DeepL translate, so it may be a strange sentence,

but I would like you to understand

Thank you

Today we have found a unique part of the telephoto lens design that we will be turning into a column.

We will use the lenses that are on sale at our vintage shop Japan Inc.

Asahi Opt Super Multi Coated TAKUMAR 200mm f/4

Click here for product sales URL

Click here for the column of cleaning work

In a normal telephoto lens, the display portion of the distance indicator (distance reference) shows all the values under the focusing ring. (Reference lens)

Reference lens
Reference lens

In this telephoto lens, the distance indicator (distance reference) is designed to display only the distance to be matched and the distances before and after the distance to be matched, with a cutout for easy identification.


There is a notch in the aperture value display at the top of the aperture ring.

Last time we introduced a lens from the Asahi Kogaku era with this notch. 

We found that the Super Multi Coated TAKUMAR series has a notched design regardless of whether it is a wide-angle or telephoto lens.

Later in that series, the notch seems to have been eliminated.

I wish this design had been more prevalent as it is a very good design and an easy to understand method.

If I find any other areas of concern again, I’ll post them in my column!

In addition to the lens introduced this time, we also sell vintage cameras and lenses, anime goods, and radio cassette recorders, so please see the URL below.

Cameras & Lenses

Click here for URL

Animation Goods

Click here for URL

Acoustics and others

Click here for URL

Vintage Shop Japan Inc. Official Website

Official website (English) URL

Click here for URL

Official website (Japanese) URL

Click here for URL

facebook URL

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Instagram URL

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Pinterest URL

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Writer Takashi Okumura