Yongnuo YN42.5mm f/1.7 Review
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Our editorial take on the Yongnuo YN42.5mm f/1.7
The Yongnuo YN42.5mm f/1.7 is a budget-friendly fast prime lens designed for Micro Four Thirds cameras. Priced at $138, it occupies the accessible entry tier for shooters seeking a fast aperture portrait-length lens (equivalent to 85mm in full-frame terms) without the premium price tag of first-party options from Olympus or Panasonic. Yongnuo has built a reputation for delivering low-cost glass that prioritizes value over premium build or optical refinement.
At f/1.7, this lens should offer solid subject separation and workable low-light performance for portraiture, product work, or general-purpose shooting on MFT bodies. The 42.5mm focal length is a natural fit for headshots and detail shots, making it a practical choice for creators who need a compact, affordable telephoto prime. Build quality and autofocus speed are typically the trade-offs in this price bracket, so it's best suited for deliberate shooting rather than fast action or demanding video AF.
- Fast f/1.7 aperture for good low-light capability and shallow depth of field
- Very affordable at $138 for an 85mm-equivalent prime
- Compact focal length ideal for portraits and detail shots on Micro Four Thirds
- Build quality likely less robust than first-party MFT lenses
- Autofocus may be slower or less reliable than premium alternatives
Synthesized by Geared editors from early expert reviews.
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- B&H Photonew● In stock$138Buy
