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Yasuhara Momo 100 Soft Focus 43mm Lens

The Yasuhara 100 Soft Focus is a lens from Yasuhara. Check GearFocus for current availability, with buyer protection on every purchase.

Yasuhara Momo 100 Soft Focus 43mm Lens

Yasuhara Momo 100 Soft Focus 43mm Lens

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Lens Overview — Yasuhara 100 Soft Focus

The Yasuhara Momo 100 Soft Focus is a 43mm prime lens built for Leica M-mount cameras, offering photographers a dedicated tool for achieving the distinctive soft-focus aesthetic that digital sharpness often makes difficult to replicate naturally. As a prime lens, it delivers a fixed focal length of 43mm, giving shooters a consistent and predictable angle of view well-suited to portraiture, still life, and artistic documentary work. The lens weighs in at a very manageable 200g, making it a practical companion for rangefinder-style shooting where keeping the kit light is often a priority.

The Leica M mount compatibility positions this lens within a well-established ecosystem favored by street photographers and fine art shooters alike. The soft-focus rendering is the defining characteristic here — this is not a lens you reach for when clinical sharpness is the goal, but rather when you want to introduce a dreamlike quality to your images in-camera rather than in post-processing. For photographers who have explored soft-focus effects through editing and want a more tactile, optical solution, the Momo 100 presents an intriguing option.

Its prime construction keeps the optical path simple and the overall package compact.

Key Features — Yasuhara 100 Soft Focus

43mm Prime Focal Length: A fixed 43mm angle of view suits portraiture, still life, and documentary work with a consistent, predictable framing.

Dedicated Soft Focus Optics: Engineered to produce a dreamlike, diffused rendering in-camera, removing the need for post-processing soft-focus effects.

Leica M Mount: Compatible with the widely adopted Leica M rangefinder ecosystem, including bodies from Leica, Voigtländer, and Zeiss.

Lightweight 200g Build: At just 200g, the lens is easy to carry for extended handheld sessions typical of rangefinder and street photography.

Manual Focus Design: Fully manual focus operation suits the deliberate, considered shooting style common among rangefinder photographers.

Compact Prime Construction: A simple optical path keeps the overall package small and unobtrusive, well matched to compact M-mount camera bodies.

Lens Specifications — Yasuhara 100 Soft Focus

Yasuhara 100 Soft Focus full specifications
SpecDetail
Use CasesFashion, Studio
Lens TypePrime
Lens MountLeica M
Focus TypeManual Focus
Image Stabilization[object Object]

Description — Yasuhara 100 Soft Focus

The Yasuhara Momo 100 Soft Focus lens is a 43mm prime designed exclusively for the Leica M mount, bringing an optical soft-focus rendering to rangefinder-style cameras. Tipping the scales at just 200g, the lens is genuinely lightweight, reducing fatigue during longer shoots and complementing the compact form factor that Leica M-mount users typically value. As a prime lens, the Momo 100 offers a fixed perspective that encourages intentional composition and deliberate movement around a subject rather than relying on zoom.

The soft-focus effect is delivered optically, meaning the characteristic rendering is baked into the image at capture rather than applied in post-production — an important distinction for photographers seeking authenticity in their finished work. Manual focus operation is standard for this mount type, fitting naturally into the shooting workflow associated with rangefinder photography. For creative shooters looking to expand their optical toolkit with something genuinely different from conventional sharp-rendering primes, the Momo 100 offers a distinct and purposeful alternative.

Pros — Yasuhara 100 Soft Focus

  • ✓Lightweight at just 200g, ideal for extended handheld shooting
  • ✓Fixed 43mm focal length provides a consistent, versatile prime perspective
  • ✓Leica M mount compatibility fits a widely used rangefinder ecosystem

Cons — Yasuhara 100 Soft Focus

  • ✗No autofocus system — fully manual operation required
  • ✗No weather sealing listed in specifications
  • ✗Single mount option (Leica M) limits body compatibility

Videos — Yasuhara 100 Soft Focus

Yasuhara Momo 100 on Sony A6000 — SonyAlpha blog

Resources & Downloads — Yasuhara 100 Soft Focus

Manuals & Guides

Frequently Asked Questions — Yasuhara 100 Soft Focus

What camera mount does the Yasuhara Momo 100 use?+
The Yasuhara Momo 100 Soft Focus lens is designed for the Leica M mount. This makes it compatible with Leica M-mount rangefinder cameras and other bodies that accept M-mount lenses via adapter.
Is this a zoom or a prime lens?+
The Momo 100 is a prime lens with a fixed focal length of 43mm. There is no zoom capability — the fixed focal length is a deliberate design choice consistent with the lens's artistic soft-focus purpose.
How heavy is the Yasuhara Momo 100?+
The lens weighs 200g, which is quite light and makes it well-suited for travel or street photography where keeping overall kit weight low is important.
Does the Yasuhara Momo 100 have autofocus?+
No autofocus system is present on this lens. Focusing is performed manually, which is standard for Leica M-mount lenses and aligns with the deliberate, considered shooting style the lens encourages.
Is the Yasuhara Momo 100 weather sealed?+
Weather sealing is not listed in the specifications for this lens. Shooters intending to use it in challenging weather conditions should take appropriate precautions.

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