Rokinon Rokinon 28mm f2.8 Heritage

Overview

The Rokinon 28mm f/2.8 is a wide-angle prime from the manual-focus era of the 1970s and 1980s, sold under the Rokinon badge in various mounts including Pentax K and Canon FD (some copies were also branded 'Automatic Wide MC'). Its true origins are murky: as one Reddit commenter notes, 'you won't find a comprehensive review of this lens because Rokinon 28mm f/2.8 lenses were likely made by different manufacturers at different times.' Community speculation on Pentax Forums points to a Japanese origin (one owner noting it was 'made in Japan, so it's not just a samyang rebrand,' guessing at Tomioka/Ricoh), while another forum thread claims 'it's one and the same with Vivitar, just different packaging and lettering.' Because Rokinon was fundamentally a rebadging house, no single definitive manufacturer, optical formula, or lineage can be confirmed. There are no established nicknames or cult jargon for this lens. Rather than a cult favorite, the reviews paint it as a modest, workmanlike wide-angle: owners describe being 'not horribly impressed' and 'disappointed' with results, though these impressions were tempered by 'lackluster films and bodies,' cheap film, and self-developing/scanning. It is a lens bought for utility and affordability rather than reputation.

Verdict: The Rokinon 28mm f/2.8 is a modest, budget vintage wide-angle whose true maker varies from copy to copy. It rewards stopping down with a sharp center but shows edge softness and vignetting wide open. It's best suited to hobbyists and film shooters who want an inexpensive, characterful 28mm and aren't chasing a legendary reputation — this is a workhorse rebrand, not a cult classic.

Optical Character

Sharpness wide open

Soft at the edges wide open but capable of very sharp center results when stopped down.

Vignetting

Noticeable vignetting at wide apertures.

Community Insights

What people love

Some photographers cherish the lens's imperfections — the edge softness and wide-open vignetting — for the character they add to images.
It can deliver very sharp results in the center of the frame when stopped down.
Affordable, simple, and available in multiple mounts, making it an easy entry into vintage wide-angle shooting.

What people dislike

Several owners were simply unimpressed — one was 'not horribly impressed' and another 'disappointed' with their results.
Softness at the edges of the frame when shot wide open.
Uncertain provenance and inconsistent quality, since Rokinon 28mm f/2.8 units were made by different manufacturers at different times.

Pro Tips

Stop the lens down to sharpen the center and reduce wide-open edge softness and vignetting.
Use good film/scanning or a clean digital adapter (e.g. MFT) to fairly evaluate it — several owners blamed disappointing results on cheap film and self-scanning rather than the glass.
Adapt it to a mirrorless body for easier manual-focus assessment, as one forum member planned to do.

Sources (1)

Web-grounded synthesissecondary

The Rokinon 28mm f/2.8 is a wide-angle prime from the manual-focus era of the 1970s and 1980s, sold under the Rokinon badge in various mounts including Pentax K and Canon FD (some copies were also branded 'Automatic Wide MC'). Its true origins are murky: as one Reddit commenter notes, 'you won't find a comprehensive review of this lens because Rokinon 28mm f/2.8 lenses were likely made by different manufacturers at different times.' Community speculation on Pentax Forums points to a Japanese origin (one owner noting it was 'made in Japan, so it's not just a samyang rebrand,' guessing at Tomioka/Ricoh), while another forum thread claims 'it's one and the same with Vivitar, just different packaging and lettering.' Because Rokinon was fundamentally a rebadging house, no single definitive manufacturer, optical formula, or lineage can be confirmed. There are no established nicknames or cult jargon for this lens. Rather than a cult favorite, the reviews paint it as a modest, workmanlike wide-angle: owners describe being 'not horribly impressed' and 'disappointed' with results, though these impressions were tempered by 'lackluster films and bodies,' cheap film, and self-developing/scanning. It is a lens bought for utility and affordability rather than reputation.

https://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/400699-rokinon-28mm-2-8-a.htmlhttps://allphotolenses.com/lenses/item/c_3016.htmlhttps://www.reddit.com/r/AnalogCommunity/comments/1e91wk6/rokinon_28mm_lens_reviews/https://www.dpreview.com/forums/thread/1969630https://ayrn.io/rokinon-28mm-f-2-8-m-c/https://www.thephotoforum.com/threads/rokinon-28mm-f-2-8.234881/