Review: Thypoch Eureka 28mm f/2.8 lens
It's easy to become distracted by specifications. Autofocus speed, corner sharpness and ever-expanding feature lists often dominate conversations surrounding new lenses, but occasionally a piece of equipment reminds us that photography is just as much about the experience of making images as it is the final result.
The Eureka 28mm f/2.8 is one such lens.
I’ve had the pleasure of trying out the Eureka, paired with my Nikon Zf using a K&F Concept M-to-Nikon Z mount adapter. While my review sample was the Leica M version, the Eureka is also available in Fujifilm X mount, broadening its appeal beyond traditional rangefinder users.
Measuring just 21.9mm in length and weighing a mere 137g, it ranks among the smallest modern 28mm lenses available.
Together, the lens and Zf formed an unexpectedly harmonious pairing, one that encouraged me to walk a little slower, observe a little longer and become more engaged with the process of photographing.
There's an honesty to the Eureka. It quietly gets out of the way and lets the photographs take centre stage.
Build & Design
The Eureka's greatest strength is how remarkably compact it is. Mounted on the Nikon Zf, the lens almost disappears, transforming an already modest camera into an exceptionally discreet package.
The combination feels wonderfully balanced, never fatiguing over the course of a long day and slipping effortlessly into a small shoulder bag between shoots.
But despite its featherweight build, the Eureka feels anything but insubstantial. The all-metal construction gives the lens a reassuring sense of quality, while its minimalist design remains refreshingly uncomplicated.
It accepts tiny 27mm filters, making every aspect of the system feel intentionally compact. Internally, the lens features an optical design comprising seven elements in four groups, including an aspherical element, balancing portability with contemporary optical performance rather than simply chasing the nostalgia of vintage glass.
In today's market, where many lenses continue to grow in both size and weight, the Eureka feels restrained. Its lightweight design feels purposeful, with no unnecessary flourishes or distractions.
There is, however, one small compromise. With larger hands, I occasionally found the lens almost too compact. Its small proportions can make quick adjustments between the aperture and focus rings feel a little cramped, particularly when working quickly. For some photographers this may prove frustrating.
Yet the very characteristic that makes handling slightly more delicate is also what makes the Eureka so interesting. Its understated profile allows it to disappear. People rarely notice it, which helps for genres of photography where discretion is important.
At the same time, the classic 28mm focal length has always occupied a sweet spot for documentary and street photography. Wide enough to establish a sense of place without introducing exaggerated perspective, it encourages photographers to work within the scene rather than observe from afar.
Combined with the Eureka's compact dimensions, it becomes a camera you genuinely forget you're carrying.
Another thoughtful inclusion is the lens's 0.4-metre minimum focusing distance. Many traditional Leica M 28mm lenses stop considerably shorter, but the Eureka's closer focusing opens creative opportunities for environmental portraits and intimate detail studies while retaining the natural perspective that makes 28mm such a versatile focal length.
One issue worth mentioning relates to adapting the lens. Throughout my testing, mounting the Eureka to my K&F Concept M-to-Nikon Z adapter required considerably more force than expected. The fit was noticeably tighter than other M-mount lenses I've used, requiring a fair amount of effort to lock into place.
Whether this stems from my particular adapter or slight manufacturing tolerances between the two products is difficult to say, but it's worth noting for photographers planning to adapt the lens to mirrorless systems.
In the Field
The focus ring is beautifully damped, offering smooth resistance that makes every adjustment feel deliberate without ever becoming slow. After only a short time, focusing became almost subconscious.
For run-and-gun shooting this proved particularly rewarding. Working quickly through changing scenes never felt like a compromise. Subjects could be acquired confidently, focus adjusted instinctively and the camera brought back to the eye in one fluid motion.
The lens seemed to disappear, allowing my attention to remain fixed on the scene rather than the mechanics of the camera.
On paper, an f/2.8 maximum aperture may seem modest alongside the growing number of ultra-fast wide-angle primes. In practice, however, it's adequate for all but the most extreme lighting scenarios.
By resisting the temptation to chase wider apertures, Thypoch has created a lens that remains genuinely pocketable without sacrificing solid optical performance. It's a reminder that sometimes the most practical lens is the one that's small enough to always have with you.
A Different Way of Seeing
What surprised me most wasn't the lens itself, but the way it subtly influenced how I photographed.
Its compact size encouraged me to carry the camera everywhere. Its discreet appearance made approaching people feel less intrusive. Its manual-focus design slowed me down just enough to observe rather than react.
More than anything, the Eureka's modest f/2.8 aperture, compact 137g weight, tiny 21.9mm profile and fully mechanical operation all serve the same purpose: creating a lens you'll want to carry every day.
It's difficult to appreciate just how liberating such a small lens can be until you've spent time wandering with it. The camera feels lighter, less conspicuous and somehow more inviting, encouraging photographs that might otherwise have been left unseen.
The results
Handling ★★★★
Compact and solid, although may be too small for people with larger hands.
Features ★★★ 1/2
Back to basics, not many features at all, which is the point of this lens. Would have been nice if Thypoch included a filter.
Focusing ★★★★
Manual focus works great, no complaints, smooth and simple operation.
Image Quality ★★★★
Excellent, character rich images that require little to no tweaking in post.
Value For Money ★★★★
The Eureka 28mm f/2.8 offers excellent value with its compact all-metal construction, thoughtful design and manual-focus experience. Its manual-only operation and potential adapter compatibility quirks may not suit everyone, but for photographers who appreciate simplicity and portability, it's a compelling option.
Final Thoughts
Retailing for approximately AU$700–750, (depending on exchange rates and local import costs), the Eureka occupies an appealing niche within the manual-focus market.
It isn't trying to compete with feature-rich autofocus lenses or premium flagship optics. Instead, it offers photographers a compact, beautifully engineered lens that prioritises portability, tactile handling and the simple pleasure of making photographs.
Photographers wanting lightning-fast autofocus or an abundance of modern conveniences should probably look elsewhere. But for those who appreciate thoughtful design, tactile controls and the quiet satisfaction that comes from manually crafting an image, the Eureka offers something increasingly uncommon.
Its compact dimensions, lightweight construction and beautifully simple design make it an ideal companion for travel, documentary work and street photography.
While its tiny proportions may feel cramped for larger hands, and my experience with adapter compatibility is worth keeping in mind, neither detracts significantly from what is an immensely enjoyable lens to use.
Like a well-worn pen that feels instantly familiar the moment it touches paper, the Eureka disappears in use. And perhaps that's its greatest achievement, not demanding your attention, but gently returning it to the world unfolding in front of you.