CameraWorth.com

Asahi Pentax 100mm f/4

The Asahi Pentax Takumar 100mm f/4 Bellows is a short telephoto lens designed without a focusing helicoid, intended for use on a bellows unit for close-up and macro photography on M42-screw-mount Pentax bodies. It dates from the classic Takumar era and was aimed at users needing high reproduction ratios where the bellows itself provides focus travel.

UK auction data for this lens is thin: the only logged hammer result is £69 from March 2022, a wholesale saleroom figure rather than a retail or dealer price. On that single data point the 100mm f/4 Bellows Takumar appears to be an inexpensive specialist optic in today's market, and as of 2026 buyers should expect what it sells for to track closely with general condition rather than commanding any clear variant premium.

Variants

Select a variant to filter the sales history below.

Variant Years Edition Sales Price Range
Bellows — — 1 £55 – £55
SMC Bellows — — 2 £60 – £101
I have one to sell

Sales History

Prices shown are realised prices — auction results and completed eBay sales, never asking prices. Most saleroom figures are hammer prices, before commission; some houses publish a premium-inclusive figure, and we do not adjust for condition. Dealer and retail asking prices are typically higher. How this figure is calculated.

Rows marked offer accepted did sell, on the date shown, but eBay does not publish the amount that was accepted. The figure we show is what the seller was asking, so the true sale price was lower — treat it as an upper bound. These rows are excluded from every price range, average and valuation on this site.

Prices updated: July 2026

Date Price Value GBP Source Variant
Aug 2026 asked US $91.30 — sold for less offer accepted — 🇺🇸 eBay listing Bellows
Jul 2026 USD 80 £60 🇺🇸 eBay SMC Bellows
Jun 2026 USD 135 £101 🇺🇸 eBay SMC Bellows
Mar 2026 £20 £20 🇬🇧 Special Auction Services SMC
Mar 2022 £125 £100 🇬🇧 Flints Auctions SMC
Mar 2022 £69 £55 🇬🇧 Flints Auctions Bellows
Have one of these? Get a free valuation →

Frequently asked questions

What is an Asahi Pentax Takumar 100mm f/4 Bellows worth at UK auction?

The single recorded UK hammer price is £69 from 2022, so its value at saleroom level appears to sit in the modest two-figure range, though one sale is too few to define a reliable market.

How much does a Takumar 100mm f/4 Bellows sell for compared with a standard Takumar?

It tends to sell for less than helicoid-focusing Takumars of similar focal length because it cannot be used on a camera body without a bellows unit, narrowing the buyer pool.

Why is the price of this lens lower than other 100mm Takumars?

The bellows-only design means no built-in focusing, so the price reflects its specialist macro role rather than general-purpose use.

Other Asahi Pentax lenses