Pentax D FA D FA 90mm f/2.8 ED AW SR
With 0.5x maximum magnification and built-in Shake Reduction, this 90mm f/2.8 lens for Pentax 645 employs an 11-element, 9-group optical stack with HD and Aero Bright coatings to minimize flare. Its weather-sealed AW body and Quick-Shift Focus System support rugged handheld shooting, while the Super Protect coating fights smudges and moisture. It’s ideal for studio portraitists and medium-format photographers requiring close-up detail at a bright f/2.8 aperture.
About This Lens
About Pentax 90mm F/2.8Are you a passionate photographer seeking to elevate your craft The Pentax-D FA 90mm f/2.8 ED AW SR Lens is a high-quality, professional-grade lens that delivers unparalleled precision and clarity. Designed specifically for Pentax 645-mount medium format cameras, this versatile lens offers a medium telephoto focal length equivalent to 71mm in the 35mm format, making it ideal for capturing stunning portraits, intricate details, and the beauty of nature.The lens's fast maximum aperture of f/2.8 not only provides exceptional control over depth of field but also ensures superior performance in low-light conditions. Coupled with a rounded 9-blade diaphragm construction, it produces images with a soft, pleasing bokeh effect that makes your subjects truly stand out.The Pentax-D FA 90mm f/2.8 ED AW SR Lens also features the renowned Pentax Quick-Shift Focus System, allowing photographers to seamlessly transition between auto and manual focus modes. This flexibility ensures you're always in control, whether capturing a fleeting moment or making meticulous adjustments.With the Pentax-original, lens-installed Shake Reduction (SR) mechanism, this lens combats the challenges of camera shake, ensuring sharp, well-defined shots even in challenging conditions. The lens also boasts both HD Coating and Aero Bright Coating for superior light transmission, minimizing flare and ghosting for clear, vibrant shots. The Super Protect (SP) coating further safeguards the lens against the elements and simplifies cleaning.Built to withstand the rigors of outdoor photography, this durable lens features dustproof and weather-resistant construction. Whether you're shooting in a desert storm or on a misty mountain, the Pentax-D FA 90mm f/2.8 ED AW SR Lens is a reliable companion that delivers impeccable results. This lens is more than just a piece of equipment; it's a testament to the pursuit of photographic perfection.Pentax 90mm F/2.8 FeaturesSeamless transition from auto to manual with Quick-Shift Focus SystemSuperior control with prime f/2.8 aperture optimal for low-light settingsSmooth bokeh production due to innovative 9-blade diaphragmIn-built Shake Reduction for clear shots free from blursEnhanced light transmission and reduced flare with dual HD and Aero Bright CoatingsSuper Protect (SP) Coating protects and eases lens cleaningResilient construction ensures weather resistance and dust protectionExclusive compatibility with Pentax 645 AF2 mountsCompatibilitySee Full Compatibility ListDesigned for use with: Pentax 645, Pentax 645D, Pentax 6x7, Pentax 645N and 2 more .Join VIP PROEarn 2X Points + Exclusive Perks!Request a CallbackChat one-on-one with an expertSell or Trade your GearGet started in 3 easy stepsKey FeaturesCapture stunning portraits with the Pentax 90mm lens' beautiful f/2.8 aperture.Experience exceptional sharpness and clarity with this prime medium format lens.Enjoy the robust build quality of this Pentax lens, designed for lasting performance.Get creative! This 90mm lens excels in both studio and outdoor photography settings.Achieve incredible detail with a 0.5X magnification, perfect for close-up work.Ensure compatibility with your Pentax 645 camera using this specialized lens mount.What's in the box:Lens Hood PH-RBL77Lens Cap O-LC67 67mmRear Lens Cap 645Lens Soft Case S120-150Articles & Videos5 Best Medium-Format Camera LensesFashion Photography Primer
- Capture stunning portraits with the Pentax 90mm lens' beautiful f/2.8 aperture.
- Experience exceptional sharpness and clarity with this prime medium format lens.
- Enjoy the robust build quality of this Pentax lens, designed for lasting performance.
- Get creative! This 90mm lens excels in both studio and outdoor photography settings.
- Achieve incredible detail with a 0.5X magnification, perfect for close-up work.
- Ensure compatibility with your Pentax 645 camera using this specialized lens mount.
The 30-Second Version
The Pentax D FA 90mm f/2.8 is a portrait specialist with beautiful bokeh and effective stabilization, but it charges $4,497 for average optics and mediocre build. It only makes sense if you're deep into the Pentax 645 system and need this precise look.
Overview
Pentax built this 90mm f/2.8 for one thing: making portraits pop on their 645 medium format cameras. It's a chunky prime with a 71mm equivalent field of view, so you get that classic portrait compression without getting in people's faces. The f/2.8 aperture might not sound wild by full-frame standards, but on medium format it delivers a shallow depth of field that separates your subject beautifully.
The lens packs weather sealing and in-body style shake reduction inside the lens itself, which is a solid combo for shooting outdoors. But our database scores paint a mixed picture — build quality lands at just the 34th percentile despite the heft, and optical performance is middle-of-the-pack. For a lens that costs as much as a used car, we expected more polish.
Performance
Bokeh is the star here, sitting in the 77th percentile. Backgrounds melt away with a smooth, creamy look that gives portraits that medium format magic. Stabilization also punches above its weight, well above average for this type of lens, so handholding at slower shutter speeds isn't a nightmare. Autofocus is just average, nothing snappy, and the 0.5x macro capability is underwhelming. Sharpness-wise, it's competent but not exceptional — plenty of full-frame lenses outresolve it. And while the f/2.8 aperture is decent, it tops out at the 75th percentile, so don't expect light-gathering miracles.
Pros & Cons
Pros
- Gorgeous bokeh that gives portraits that medium format depth. 81th
- Effective shake reduction lets you handhold in dimmer light. 80th
- Weather sealing adds real-world durability for outdoor shoots. 79th
- The 71mm equivalent focal length is a portrait sweet spot.
Cons
- Build quality feels mediocre for a lens pushing $4,500. 34th
- Optical sharpness is just average, nothing to write home about. 35th
- Big and heavy at over a kilogram, it's a burden for travel.
- The price is brutally high for what you actually get on paper.
Specifications
Full Specifications
Optics
| Type | prime |
| Focal Length Min | 90 |
| Focal Length Max | 90 |
| Elements | 11 |
| Groups | 9 |
| Coating | HD Coating, Aero Bright Coating, Super Protect (SP) coating |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | 2.8 |
| Diaphragm Blades | 9 |
Build
| Mount | PENTAX 645 AF2 |
| Format | medium-format |
| Weather Sealed | Yes |
| Weight | 1.0 kg / 2.3 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Auto Focus |
| Stabilization | Yes |
Focus
| Min Focus Distance | 415 |
| Max Magnification | 0.5X |
Value & Pricing
At $4,497, this lens demands a mountain of faith from your wallet. For the same money you could buy a high-end full-frame body and multiple excellent lenses that outperform this Pentax in sharpness and versatility. But value is weird in medium format land — if you're locked into the Pentax 645 system and need this exact focal length, your options are basically zero. So the value is there only if you absolutely need this specific tool, and you're okay writing a check that'll make your accountant wince.
vs Competition
Compared to the other medium format lenses in our database, like the older Pentax 120mm f/4 macro or the 55mm f/2.8, this 90mm carves out a unique portrait niche with its faster aperture and stabilization. But stack it against modern full-frame portrait lenses — a Sony 135mm GM or a Canon RF 85mm f/1.2 — and the Pentax feels slow, heavy, and optically average. The listed competitors are mostly zooms from other mounts, none of which directly compete, underscoring just how isolated this lens is. It's a one-system wonder.
| Spec | Pentax D FA D FA 90mm f/2.8 ED AW SR | Sigma Sports 70-200mm f/2.8 DG DN OS | Tamron Di III 28-75mm F/2.8 Di III VXD G2 | Meike Neo Series MK-5514STM-Z | Nikon NIKKOR Z 14-24mm f/2.8 S | Panasonic LUMIX S S-R28200 |
|---|---|---|---|---|---|---|
| Focal Length | 90mm | 70-200mm | 28-75mm | 55mm | 14-24mm | 28-200mm |
| Max Aperture | f/2.8 | 2.8 | f/2.8 | f/1.4 | f/2.8 | f/4 |
| Mount | PENTAX 645 AF2 | Sony E | Nikon Z | Nikon Z | Nikon Z | L-Mount |
| Stabilization | true | true | false | true | true | true |
| Weather Sealed | true | true | true | false | true | true |
| Weight (g) | 1040 | 176 | 550 | 280 | 649 | 413 |
| AF Type | Auto Focus | HLA | VXD linear motor | STM | stepping motor | Autofocus |
| Lens Type | prime | telephoto | zoom | prime | wide-angle | macro |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Pentax D FA D FA 90mm f/2.8 ED AW SR | 53.3 | 81.2 | 34.8 | 41 | 51.7 | 79.1 | 34 | 79.7 |
| Sigma Sports 70-200mm f/2.8 DG DN OS Compare | 53.3 | 87.2 | 93.2 | 46.2 | 99.7 | 79.1 | 79.6 | 99.9 |
| Tamron Di III 28-75mm F/2.8 Di III VXD G2 Compare | 98 | 81.2 | 63.1 | 83.9 | 87.9 | 79.1 | 78.6 | 34.5 |
| Meike Neo Series MK-5514STM-Z Compare | 85.5 | 94.9 | 72.8 | 94.6 | 49.7 | 94.8 | 34 | 79.7 |
| Nikon NIKKOR Z 14-24mm f/2.8 S Compare | 85.5 | 81.2 | 55.5 | 97.6 | 82.5 | 79.1 | 69.2 | 79.7 |
| Panasonic LUMIX S S-R28200 Compare | 53.3 | 71.9 | 73.7 | 87.8 | 91.2 | 65.6 | 95.9 | 99.5 |
Common Questions
Q: Will this lens work on my Pentax 645Z?
Yep, it's built for the PENTAX 645 AF2 mount, so it fits all current 645 digital bodies and even older film ones.
Q: What's the full-frame equivalent focal length?
It's around 71mm, which is a classic portrait focal length — great for headshots and upper-body framing without distortion.
Q: Does the stabilization make a real difference?
It absolutely does. At the 79th percentile for its class, the lens-based SR gives you a few extra stops of handholdability, so you can shoot at slower speeds than unstabilized medium format options.
Who Should Skip This
If you're not already invested in the Pentax 645 ecosystem, skip this without a second thought. The price is astronomical for what you get, and a high-end full-frame mirrorless setup will be lighter, sharper, and more versatile for less cash. Travel shooters should also steer clear — the weight and lack of focal range flexibility will frustrate you. And if edge-to-edge sharpness is your hill to die on, look elsewhere; this lens is about rendering, not test chart domination.
Verdict
This lens is for the diehard Pentax 645 shooter who values bokeh above all else and needs stabilization in a portrait prime. If that's you, it'll deliver the goods. For anyone else, it's an expensive curiosity that's hard to justify when you can get more performance for less money literally anywhere else. Only buy it if your 645 kit is already complete and you're craving that exact focal length.
