Cosina 40mm f/2.5
The Cosina 40mm f/2.5 is a compact wide-standard prime lens from the Japanese maker known for producing affordable manual-focus optics across multiple SLR mounts. Its slightly wider-than-normal focal length and moderately fast f/2.5 aperture made it a low-cost alternative to the standard 50mm kit lens, suited to general photography and travel use on 35mm SLR bodies.
At UK auction in recent years the Cosina 40mm f/2.5 has traded at modest, entry-level money: a single recorded hammer result from March 2023 sold for £38, which sets the only firm reference point for what this lens is worth at saleroom level today. With just one verified sale, there is no meaningful range or median to quote, but the price reflects Cosina's position as a budget-tier maker rather than a collectible name, and clean copies typically sell for similar low double-digit figures in the auction market before commission.
Sales History
Prices shown are UK auction hammer results — the wholesale level achieved in the saleroom. Neither buyer’s nor seller’s commission is included. Dealer and retail asking prices are typically higher.
Prices updated: March 2023
| Date | Price | Source | |
|---|---|---|---|
| Mar 2023 | £38 | Flints Auctions | |
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Auction: The Collectors Sale (Lot 221) Title: A Cosinon Auto MC f/2.5 40mm Lens
Description:
black, body G-VG, focusing ring sometimes stiff, requires attention, optics G-VG, some light dust present, PK mount, (Qty: 1) |
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Frequently asked questions
How much does a Cosina 40mm f/2.5 sell for at UK auction?
The only verified UK auction hammer result on file is £38 from March 2023, so that figure is the best available guide to current value for a working copy.
What is a Cosina 40mm f/2.5 worth today?
Based on the single recorded sale, the price for a clean, functional example sits in the low double-digit range in GBP, reflecting Cosina's budget-tier reputation rather than collector demand.
Is the Cosina 40mm f/2.5 a collectible lens?
No — the limited sales evidence and low hammer price indicate it is a user-grade lens rather than a collector's piece, and value depends almost entirely on optical and mechanical condition.
What should I check before buying one?
Look for fungus, haze, oil on the aperture blades, coating scratches, element separation and stiff focus, as these are the typical failure modes on Cosina primes of this generation.