This is the Konica Hexanon AR 57mm f/1.2. Chapter 34.

The subject lens is aimed at a more professional grade work. I brought this lens to the Philippines with a mission, to get specific shots, long exposures, portraits, and sunsets. Looking at my example photos, you notice the bokeh isn't great (my other f/1.8, or f/1.4 stand out), for head and shoulders photos you get the most from a f/1.2 but handle with care to the focusing plane.
A golden color lens, ready to shoot "hot" sunsets, the bad weather ruined all, photos at the beach carry a green tone due to the blueish sky.
It's sharp, delivers good color rendering, strong against lens flare, and is bulky.
Only for working and not for pleasure.
主體鏡頭針對的是更專業級的作品。我帶著這個鏡頭來到菲律賓，目的是拍攝特定照、長時間曝光、肖像和日落。看看我的示例照片，您會發現散景效果不太好（我的其他f/1.8 或f/1.4 還突出），對於肖像照，您可以從f/1.2 獲得最佳的效果，但要小心處理聚焦平面。
金色的鏡頭，準備拍攝“炎熱”的日落，惡劣的天氣毀了一切，海灘上的照片因天空的藍色而帶有綠色的色調。
它很銳利，具有良好的演色性，抗鏡頭眩光能力強，(鏡頭)體積龐大。
只為工作，不為娛樂。
A objectiva do assunto destina a ser usada em trabalho de nível mais profissional. Trouxe essa lente para as Filipinas com a missão de obter fotos específicas, longas exposições, retratos e por do sol. Olhando minhas fotos de exemplo, você percebe que o bokeh não é ótimo (meus outros f/1.8 ou f/1.4 se destacam), para fotos de cabeça e ombros você aproveita ao máximo dum f/1.2, mas manuseie com cuidado o plano de foco .
Uma lente de cor dourada, pronta para fotografar pores do sol “quentes”, o mau tempo fez o contributo para a desgraça, as fotos na praia carregam um tom esverdeado devido ao céu azulado.
É nítido, oferece boa reprodução de cores, forte contra reflexos de lente e é volumosa.
Apenas para trabalhar e não por prazer.

[@markrobinson8254]

3:21.Brilliant photo. wonderful water themed photos!

[@red_code]

Thank you.

[@sclogse1]

The 57mm 1.2 came up on a Facebook group. Then I saw what people were paying for it. So, back to reality at 1.4. Hope you figured out a way to get the moisture out of your lens.

[@red_code]

Thanks for your comment. It was easy to remove that moisture, keeping it inside the dry cabinet. Here in Asia, a dry cabinet is a must. This lens, I bought by luck.

[@Nickauboutte]

This lens was first produced in 1967 at the earliest. The literature accompanying the Autorex (Auto-Reflex) and Autorex P (Auto-Reflex P), bodies introduced in 1965 and 1966, makes no mention of the 57mm f1.2. It is first mentioned with the introduction of the Autoreflex T in 1968.

[@red_code]

Thanks for your comment.

[@Komat0zz]

There's actually non-thoriated version of 57 1.2. It's kinda rare, late production of green EE marked ones, its having slightly different tint without thorium golden-yellow reflection on it. And yeah, you can try to put T3, TC, T4, or green EE-marked Hexanons under blacklight for some fancy luminescent show. Cheers.

[@red_code]

Thanks for your comment.

[@shtfvan8084]

Thats the one I have and its mint

[@seoulrydr]

thanks for the vid. i have a copy of the last variant of this version. however, i was under the impression there are 2 other lenses much more expensive than this in the hexanon lineup. they would be the 28mm f1.8 and the 21mm f2.8. however, i cannot confirm if they are standard hexanon lenses with the KR mount or if they are LTM lenses.

[@red_code]

Hello, and thanks for your comment. You refer to the Konica UC Hexanon 28mm f/1.8 and Konica Hexanon AR 21mm f/2.8. The Hexanon 28mm is really expensive, just next to the Nikon’s famous 28mm F1.4D. The predecessor Hexanon AR 21mm f/4 it's really a bargain for those who are interested. Both of them are KR mount and produced btw 1978 to 1979. I should say, the most expensive lens in the entire Konica range lenses, paying in attention to the year it was produced. Thank you for correcting me.