Formula 5 Formula 5 28mm f2.8 Heritage

เรื่องราวของเลนส์

Formula 5 was an obscure rebadge brand about which almost no reliable information survives; forum users describe it as so poorly documented that one owner nicknamed their sample 'Googleproof' due to the utter lack of information online. According to community recollection, Formula 5 lenses were likely rebadges of other manufacturers' optics, possibly sold through the Lechmere camera department, with some older screwmount examples reportedly made by a firm called 'Mitaka.' The reviews note the brand appeared in multiple mounts (M42, Pentax bayonet, Canon FD), and by extension this 28mm f/2.8 exists in the Minolta MD line. The 28mm f/2.8 MC is documented as a multi-coated wide-angle prime for 35mm SLRs of the 1970s-80s era. There is no evidence of a genuine cult following beyond curiosity value; interest is driven mostly by its mysterious, near-untraceable origins. No established nicknames apply to this specific 28mm model.

สรุป: The Formula 5 28mm f/2.8 MC is a curiosity for collectors and experimenters drawn to obscure, undocumented rebadge lenses. With only a handful of ratings suggesting a competent (~4/5) mid-tier wide-angle and virtually no descriptive reviews of its rendering, it appeals to those who enjoy mystery and low-cost tinkering rather than photographers seeking a known, proven optic.

คาแรกเตอร์ของภาพ

โบเก้

ได้รับการให้คะแนนประมาณ 4 จาก 5 โดยผู้ประเมินกลุ่มเล็ก ๆ โดยไม่มีคำอธิบายประกอบเพิ่มเติม

รีวิวจากผู้ใช้

ข้อดี

The mystery and rarity of the brand, so obscure it was dubbed 'Googleproof' for its lack of online information
Decent overall ratings (around 4/5 for optical quality, bokeh, usability and value) from the few who documented it
Its status as an inexpensive curiosity, with an average price around $70

ข้อเสีย

Near-total lack of documentation and reliable information about the brand and its true manufacturer
Uncertain provenance, being a rebadge of some unknown OEM optic

เทคนิคการใช้

Treat it as an inexpensive experimental wide-angle rather than a documented performer, since almost no rendering data exists
Since the brand is a rebadge, comparing your sample against known OEM designs of the era may help identify its real optical formula

แหล่งอ้างอิง (1)

Web-grounded synthesissecondary

Formula 5 was an obscure rebadge brand about which almost no reliable information survives; forum users describe it as so poorly documented that one owner nicknamed their sample 'Googleproof' due to the utter lack of information online. According to community recollection, Formula 5 lenses were likely rebadges of other manufacturers' optics, possibly sold through the Lechmere camera department, with some older screwmount examples reportedly made by a firm called 'Mitaka.' The reviews note the brand appeared in multiple mounts (M42, Pentax bayonet, Canon FD), and by extension this 28mm f/2.8 exists in the Minolta MD line. The 28mm f/2.8 MC is documented as a multi-coated wide-angle prime for 35mm SLRs of the 1970s-80s era. There is no evidence of a genuine cult following beyond curiosity value; interest is driven mostly by its mysterious, near-untraceable origins. No established nicknames apply to this specific 28mm model.

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/45150-formula-5-lenses.htmlhttps://allphotolenses.com/lenses/item/c_3304.html