Lens Heritage/Contax / Yashica

Contax / Yashica Yashica ML 50mm f1.7

Contax/Yashica · 50mm · f/1.7

ยังไม่มีภาพสำหรับเลนส์นี้

ปีผลิต

1975

ผลิตที่

-

สูตรเลนส์

-

อัปเดต

1 ก.ค. 2569

เรื่องราวของเลนส์

The Yashica ML 50mm f/1.7 is a standard prime for the Contax/Yashica (C/Y) bayonet mount, introduced around 1975 according to reviewer testing notes. The C/Y mount itself was developed by Carl Zeiss in 1973 as part of the collaboration between Yashica and Zeiss that revived the CONTAX brand; it served both CONTAX-branded and Yashica-branded SLRs. The ML line was Yashica's higher-tier optical range, and reviewers note that most ML lenses were built to a very high standard by Kyocera, with construction almost identical to their Contax counterparts, while a small number of later 'C' models were made by Cosina. Yashica lenses of this era are strongly associated with Tomioka Optics, though a reviewer cautions that specific attribution can't be confirmed because glass was supplied by multiple manufacturers. The lens has a cult following largely because it is repeatedly compared to the Zeiss Planar 50mm f/1.7 in rendering and sharpness while costing far less, making it a well-known bargain among vintage shooters. No established nickname is evidenced in the reviews for this specific lens (note: the reviews discuss two different lenses in the family — an f/1.9 and this f/1.7 — and only the f/1.9 was described as having swirly bokeh 'comparable to the Helios 44 series').

สรุป: The Yashica ML 50mm f/1.7 is for photographers who want Zeiss Planar-caliber sharpness and neutral, accurate rendering without the Contax price tag. It is a refined, correct-rendering fifty — sharp, clean, and pleasant in the out-of-focus areas — rather than a swirly character lens (that trait belongs to the f/1.9 sibling, not this one). If your results disappoint, as one reviewer puts it, you either have a bad copy or you're expecting an Otus for the price of a Takumar.

คาแรกเตอร์ของภาพ

โบเก้

ให้ภาพนุ่มและเรียบเมื่อเปิดรูรับแสงกว้างสุด โดยไฮไลท์จะเริ่มปรากฏเป็นวงกลมเมื่อหรี่รูรับแสงลงเป็นค่าที่แคบกว่า f/5.6 — เวอร์ชัน f/1.7 นี้ไม่พบลักษณะโบเก้แบบสวิร์ล

โทนสี

ให้การถ่ายทอดสีที่แม่นยำและเป็นกลาง เทียบได้กับ Zeiss Planar 50mm f/1.7

ความคม (เปิดสุด)

คมเฉียบบริเวณศูนย์ภาพตั้งแต่ f/2 และให้ความคมแบบ "Zeiss sharp" ที่ f/5.6

แฟลร์

แฟลร์จะปรากฏเป็นแสงคมชัดเมื่อเลนส์ชี้ตรงเข้าหาดวงอาทิตย์ แต่การจัดองค์ประกอบให้นอกศูนย์กลางจะลดแฟลร์จนแทบไม่สังเกตเห็น

คอนทราสต์

ให้ความคมยอดเยี่ยมทั่วทั้งเฟรม แม้จะด้อยกว่า Zeiss Planar 50mm f/1.7 เล็กน้อย

รีวิวจากผู้ใช้

ข้อดี
  • Planar-like image quality at a fraction of the price of its Contax Zeiss equivalent, making it a genuine bargain.
  • Tack sharp in the center from f/2 and 'Zeiss sharp' by f/5.6.
  • Accurate, neutral color rendition and shadow detail on par with the Zeiss Planar 50mm f/1.7.
  • Smooth, soft bokeh wide open with clean circular highlights when stopped down.
  • High build quality from Kyocera, with construction almost identical to the Contax counterparts.
ข้อเสีย
  • Contrast is slightly lower than the Zeiss Planar 50mm f/1.7.
  • Chromatic aberration is noticeable at 100% view in high-contrast scenes (though easily corrected).
  • Minor color shifting / bokeh fringing visible at f/1.7.
  • Some copies were made by Cosina rather than Kyocera, so quality can vary by variant.
เทคนิคการใช้
  • Stop down to f/2 for tack-sharp center results, and to f/5.6 for peak 'Zeiss sharp' performance.
  • For clean circular highlights in the bokeh, shoot at f/5.6 or beyond.
  • To manage flare, avoid placing the sun dead-center; a slightly off-center framing reduces flare to unnoticeable levels.
  • Correct the minor chromatic aberration in post — it's easily fixed and mostly visible at 100%.
  • Use a proper C/Y adapter: CY-NEX for Sony mirrorless (and equivalents for other mirrorless brands), or CY-EOS for Canon EF DSLRs (note other DSLRs require a corrective-element adapter).

แหล่งอ้างอิง (1)

Web-grounded synthesissecondary

The Yashica ML 50mm f/1.7 is a standard prime for the Contax/Yashica (C/Y) bayonet mount, introduced around 1975 according to reviewer testing notes. The C/Y mount itself was developed by Carl Zeiss in 1973 as part of the collaboration between Yashica and Zeiss that revived the CONTAX brand; it served both CONTAX-branded and Yashica-branded SLRs. The ML line was Yashica's higher-tier optical range, and reviewers note that most ML lenses were built to a very high standard by Kyocera, with construction almost identical to their Contax counterparts, while a small number of later 'C' models were made by Cosina. Yashica lenses of this era are strongly associated with Tomioka Optics, though a reviewer cautions that specific attribution can't be confirmed because glass was supplied by multiple manufacturers. The lens has a cult following largely because it is repeatedly compared to the Zeiss Planar 50mm f/1.7 in rendering and sharpness while costing far less, making it a well-known bargain among vintage shooters. No established nickname is evidenced in the reviews for this specific lens (note: the reviews discuss two different lenses in the family — an f/1.9 and this f/1.7 — and only the f/1.9 was described as having swirly bokeh 'comparable to the Helios 44 series').

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