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Asahi Opt. Co., Japan Takumar 1:2.4 f=58mm (M42)
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PostPosted: Sun Dec 13, 2020 9:34 pm    Post subject: Reply with quote

Based on the text and link provided by Visualopsins:

Maybe the AOCo "Just in Time" production method was reinforced by law of "They Won't Notice." If it was a numbers game back then, well the consumer is not going to complain about a faster better lens. The reseller is not compelled to complain either, because they received the model ordered as labeled.[/quote]

Makes sense! It just seems to me that the physical dimensions of the two optical units would be different and could not be interchanged (as evidenced by the deep set front element of the 55mm), but who knows, there is no machine drawing to check.

All the best,


PostPosted: Sat Aug 14, 2021 9:12 pm    Post subject: Reply with quote


Last edited by Blazer0ne on Tue Feb 22, 2022 5:52 pm; edited 1 time in total

PostPosted: Sat Aug 14, 2021 11:19 pm    Post subject: Reply with quote

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Very nice photo's. Surreal, in a good way.

PostPosted: Sun Aug 15, 2021 1:27 am    Post subject: Reply with quote