Pentax HD DA 40mm f/2.8 Limited
The Pentax 40mm f/2.8 is a 40mm f/2.8 lens designed for Pentax K mount cameras. Check GearFocus for current availability, with buyer protection on every purchase.
Pentax HD DA 40mm f/2.8 Limited
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Lens Overview — Pentax 40mm f/2.8
Key Features — Pentax 40mm f/2.8
Pancake Form Factor: One of the slimmest lenses available for Pentax DSLRs, keeping the overall camera profile minimal and highly portable.
80g Ultralight Build: At just 80g, it adds virtually no noticeable weight to a camera body, making it ideal for all-day carry.
40mm Standard Focal Length: Equivalent to approximately 61mm on APS-C, offering a natural field of view well-suited to everyday and street photography.
f/2.8 Maximum Aperture: Provides solid light-gathering capability and background separation in a lens of this compact size.
HD Lens Coating: Pentax's HD coating reduces flare and ghosting for improved contrast and clarity in high-contrast lighting situations.
Autofocus with Manual Override: Supports both AF and MF shooting, giving photographers flexibility across different shooting scenarios.
Lens Specifications — Pentax 40mm f/2.8
| Spec | Detail |
|---|---|
| Use Cases | Travel |
| Lens Type | Pancake |
| Format | APS-C |
| Zoom/Prime | Prime |
| Focal Length | 40mm |
| Maximum Aperture | f/2.8 |
| Camera System | DSLR |
| Lens Mount | Pentax K |
| Autofocus | Yes |
| Focus Type | Auto, Manual |
| Image Stabilization | None |
| Filter Thread | 49mm |
Description — Pentax 40mm f/2.8
The Pentax HD DA 40mm f/2.8 Limited is a prime, pancake-style lens built for Pentax K mount APS-C DSLRs. Tipping the scales at just 80g, it's designed for photographers who prioritize portability without giving up a useful f/2.8 maximum aperture. The 40mm focal length places it squarely in standard range territory — a versatile choice for everyday subjects.
Both autofocus and manual focus are supported, giving shooters control over how they approach focus in different situations. The 49mm filter thread keeps accessory costs low and the overall package compact. With no image stabilization on board, the lens keeps its design simple and its weight minimal, leaning on the inherent steadiness of a pancake form factor and the photographer's own technique.
For Pentax DSLR users looking for a lightweight, pocketable prime with a standard focal length, the HD DA 40mm f/2.8 Limited is a purpose-built option that delivers a capable aperture in one of the smallest possible packages.
Pros — Pentax 40mm f/2.8
- ✓Ultralight at just 80g — one of the lightest options in the Pentax DSLR lineup
- ✓Pancake form factor keeps the overall camera profile extremely slim and portable
- ✓f/2.8 maximum aperture offers useful light-gathering capability for a lens this compact
Cons — Pentax 40mm f/2.8
- ✗No image stabilization, which may be limiting in low-light handheld situations
- ✗Fixed 40mm focal length offers no zoom flexibility
- ✗f/2.8 maximum aperture, while solid for a pancake, is slower than some competing primes
Reviews — Pentax 40mm f/2.8
Videos — Pentax 40mm f/2.8
Pentax DA 40mm and 70mm lens review — Gordon Laing