Asahi Pentax 20mm f/4

lens

The Asahi Pentax 20mm f/4 sells for about £140 (median of only 5 recorded sales, 2022–2026; indicative).

See all 5 recorded sales: the date, saleroom or eBay listing, version and price of each →

Typical sale price
about£140

median of only 5 sales, 2022–2026

Indicative
£100£127£140£147£224

Few sales. Read this as a rough guide; every sale is shown below.

Which version was it?
5matched0listing doesn’t say0not yet checked
Hammer prices, buyer’s premium removed; eBay as soldHow ↗

How much does one sale move this?

Without the highest sale£134
Without the lowest sale£144

Price by version

Typical price and middle half, on one shared scale.

SMC Pentax-M£1273 sales£114–£137
1 rarer version (1–2 sales each)
SMC£140, £224

Every sale

[NEAR MINT] SMC Pentax 20mm F/4 MF Wide Angle MF Lens For K mount From Japan£224
13 Jul 2026 · eBay · $299as sold ↗
● SMC

What the book says

Book guide — not a sale$250–375
McKeown’s 1997–98: $250–375 (USD, mint) — a guide price, not a sale

What it is

Lens mount
Pentax K mount

8 elements; focus to 0.25m; 94° angle.

— McKeown’s Price Guide, 1997–98, p. 30

Versions and how to tell them apart

SMC Pentax-M
3 sales£127Indicative
SMC
2 salesSales only

Other 20mms

20mm f/4.5
13 sales£172Fair20mm f/2.8
3 salesabout £208Indicative

Facts

Maker
Asahi Pentax
Type
lens
Sales in the typical price
5
First sale
31 Mar 2022
Latest sale
13 Aug 2026
Median
£140
Middle half
£127–£147
Evidence
Indicative
Method
v1

Cite this page

“Asahi Pentax 20mm f/4: about £140, the median of 5 recorded sales, 2022–2026 (Indicative, method v1).” cameraworth.com, retrieved 29 October 2026. https://www.cameraworth.com/a/asahi-pentax/20mm-f-4/

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