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Yasuhara Momo 100 28mm Lens

The Yasuhara 100 is a 28mm f/6.4 lens designed for Sony E mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.

Yasuhara Momo 100 28mm Lens

Yasuhara Momo 100 28mm Lens

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Lens Overview — Yasuhara 100

The Yasuhara Momo 100 is a 28mm prime lens designed for Sony E mount mirrorless cameras, built around an APS-C image format. It is a manual focus only lens with no autofocus capability and no image stabilization, making it a fully hands-on, deliberate shooting tool. The lens falls into the wide angle focal length range and is constructed in a compact pancake form factor, weighing just 145g — making it one of the lighter options available for Sony E mount shooters who value portability.

The maximum aperture is f/6.4, which is modest by prime lens standards but consistent with the pancake design philosophy of keeping size and weight to a minimum. A 37mm filter thread keeps compatible filters small and affordable. This lens is categorized as a mirrorless lens and is specifically matched to the Sony E mount system, making it straightforward to pair with compatible Sony and third-party APS-C mirrorless bodies.

For photographers drawn to manual operation, a lightweight carry kit, or the character that a pancake-style wide angle prime can bring, the Momo 100 presents a compact and distinctive option within the Sony E mount ecosystem.

Key Features — Yasuhara 100

28mm Wide Angle Prime: A fixed 28mm focal length on APS-C offers a versatile wide angle field of view suited to street, travel, and everyday photography.

Pancake Form Factor: Slim pancake construction keeps the lens profile low on the camera body, making it one of the most pocketable options for Sony E mount shooters.

145g Ultralight Build: At just 145g, the lens adds minimal weight to a carry kit, making it well suited for all-day shooting or travel.

Sony E Mount: Designed specifically for Sony E mount, it is compatible with a wide range of APS-C mirrorless bodies from Sony and third-party manufacturers.

APS-C Image Circle: Optimized for APS-C sensors, matching the most common mirrorless camera format without vignetting or coverage issues.

Manual Focus Only: Fully manual focus operation puts complete control in the shooter's hands, rewarding a deliberate and considered approach to shooting.

Lens Specifications — Yasuhara 100

Yasuhara 100 full specifications
SpecDetail
Use CasesTravel
Lens TypePancake
FormatAPS-C
Zoom/PrimePrime
Focal Length28mm
Maximum Aperturef/6.4
Camera SystemMirrorless
Lens MountSony E
AutofocusNo
Focus TypeManual
Image StabilizationNone
Filter Thread37mm

Description — Yasuhara 100

The Yasuhara Momo 100 is a 28mm wide angle prime lens built for Sony E mount mirrorless cameras covering the APS-C format. Housed in an ultra-compact pancake body, it weighs only 145g, making it an appealing choice for photographers who prioritize a lightweight and unobtrusive kit. The lens operates at a maximum aperture of f/6.4 and is entirely manual focus, with no autofocus or image stabilization on board.

A 37mm filter thread rounds out the feature set, keeping accessory filters small and practical. The lens sits in the wide angle focal length category and is designed exclusively for the mirrorless camera system. Its combination of compact form, light weight, and straightforward manual operation makes it a distinctive choice for Sony E mount APS-C shooters who appreciate a deliberate, hands-on approach to photography.

Pros — Yasuhara 100

  • ✓Ultralight pancake design at just 145g keeps kit weight minimal
  • ✓28mm wide angle prime focal length suits a range of everyday shooting scenarios
  • ✓Sony E mount compatibility integrates directly with a wide range of mirrorless bodies

Cons — Yasuhara 100

  • ✗Maximum aperture of f/6.4 is relatively slow for a prime lens, limiting low-light performance
  • ✗Manual focus only with no autofocus support, requiring more deliberate shooting technique
  • ✗No image stabilization, which combined with manual focus demands steady handling

Videos — Yasuhara 100

This Vintage Lens Made My GFX 100 II Look Like Medium Format Film — Cine Dailies

Resources & Downloads — Yasuhara 100

Manuals & Guides

Frequently Asked Questions — Yasuhara 100

Is this lens compatible with full-frame Sony E mount cameras?+
The Yasuhara Momo 100 is specified for the APS-C format. While it uses a Sony E mount, the image circle is designed for APS-C sensors, so use on a full-frame body may result in vignetting or incomplete coverage.
Does the Momo 100 support autofocus?+
No. The lens is manual focus only with no autofocus capability. All focusing must be done by hand, which requires more deliberate technique but gives the photographer direct control over focus.
What filter size does the Momo 100 use?+
The Momo 100 uses a 37mm filter thread, which is a compact size. This keeps compatible filters small and generally less expensive than larger filter diameters.
How heavy is the Momo 100?+
The lens weighs 145g, making it a very lightweight option consistent with its pancake form factor. It is well suited for photographers who want to keep their mirrorless kit as light and portable as possible.
Does the lens have image stabilization?+
No. The specifications confirm image stabilization is not present in this lens. Any stabilization would need to come from in-body systems on the camera being used.

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