* Item pictured for illustrative purposes only, actual item not pictured. See ‘Notes’ next to grade for included items.
Pentax HD 100mm f/2.8 PENTAX-D FA Macro ED AW Full-Frame Autofocus Lens for K-Mount, Black {49}
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$393.00
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KEH Certified™ pre-owned gear, expertly inspected†
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All rental gear is between Excellent and Like New Minus condition
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Standard accessories included
Pentax 100mm f/2.8 macro with true 1:1 and all-weather sealing.
The HD PENTAX-D FA MACRO 100mm F2.8 ED AW delivers 1:1 magnification, meaning subjects are reproduced at life size on the sensor. A minimum focus distance of 0.13 m lets you get close enough to fill the frame with fine detail, whether you're shooting insects, jewelry, or botanical subjects. ED glass keeps chromatic aberration in check at that near-focus distance where fringing would otherwise be obvious, and HD coating reduces flare from raking light.
The AW weather sealing is a practical advantage for anyone shooting outdoors without the safety net of a controlled environment. Rain, dust, and field humidity are no longer reasons to pull back or pack up. Autofocus is on board for those moments when you need to rack between a nearby subject and a background element quickly. The rounded 8-blade aperture runs from f/2.8 to f/32, giving you both subject separation at the wide end and the stopping power for focus stacking at the narrow end. Distance and depth-of-field scales are printed on the barrel, a detail that matters when you're working manual focus at close range and need hard reference points. At f/2.8 this focal length also works as a portrait lens with a working distance that keeps you out of a subject's personal space.
Who It's For
Macro photographers who work outdoors will appreciate AW weather sealing paired with 1:1 magnification, so a light rain doesn't end a shoot. Portrait photographers get a 100mm f/2.8 that pulls double duty without hauling a second lens. Pentax K-mount shooters on full-frame bodies benefit from a lens built specifically for the KAF4 mount with no crop factor penalty. Studio still-life photographers working close will find the printed depth-of-field scale useful for precise manual focus control at high magnification.
Key Features
- 100mm prime lens with true 1:1 macro magnification
- f/2.8–f/32 aperture range with rounded 8-blade diaphragm
- ED glass and HD coating for color accuracy and flare control
- AW weather sealing for outdoor macro work in wet or dusty conditions
- 0.13 m minimum focus distance for fine detail work
- Distance and DOF scales on barrel for manual focus reference
- Autofocus on board for quick subject-to-background transitions
- 49mm filter thread with supplied hood
FAQ
- Does this lens focus close enough for insects and small subjects?
- Yes-minimum focus distance is 0.13 m with 1× magnification, so subjects appear life-size on the sensor. That working distance lets you frame insects, jewelry, and botanical details without a separate extension tube.
- What happens to autofocus performance at close focus distances?
- Autofocus is present on this lens and functions at close range, though macro shooting often favors manual focus for precise focus stacking or when working at the minimum focus distance where AF speed matters less than placement accuracy.
- Is this lens weather-sealed?
- Yes. The AW (All Weather) sealing protects against rain, dust, and field humidity, so you can shoot outdoors in wet or dusty conditions without retracting the lens or packing up.
- What aperture range does it cover?
- f/2.8 to f/32. The f/2.8 maximum gives you subject separation for portraits; f/32 provides the depth of field needed for focus stacking techniques in macro work.
- What optical coatings does it have?
- HD coating and ED (Extra-low Dispersion) glass. The HD coating reduces flare from raking light at close range; ED glass controls chromatic aberration where fringing would otherwise be visible at near-focus distances.
- Does it have a tripod collar?
- No. This 100mm macro has no tripod collar, so you'll mount it directly to the camera body.
- Are distance and depth-of-field scales printed on the barrel?
- Yes to both. These scales are useful references when working manual focus at close range and plotting focus stacking sequences.
| Specification | Value |
|---|---|
| Focal Length | 100mm |
| Max Aperture | f/2.8 |
| Mount | Pentax KAF4 |
| AF System | Yes |
| Min Focus Distance | 0.13 m (5.12") |
| Lens Type | Prime |
| Aperture Range | f/2.8–32 |
| Aperture Ring | No |
| Diaphragm Blades | 8 |
| Aperture Blade Type | Rounded |
| Elements | 10 |
| Groups | 8 |
| Maximum Magnification | 1× |
| Distance Scale | Yes |
| DOF Scale | Yes |
| Filter Thread | 49 mm |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Pentax |
|---|---|
| Filter Size | 49mm |
| Focus Type | Autofocus (camera motor) |
| Lens Mount | Pentax KAF SMC-FAJ |
| Lens Type | Short Tele / Portrait |
| Max Focal Length | 100mm |
| Min Focal Length | 100mm |
Learn what to expect from each condition, cosmetically. Images are representative of each grade and may not show the exact item you receive. All equipment is guaranteed to work as intended, unless otherwise noted. We also occasionally offer items that fall .
Exceptions
- New
- New in box complete with manufacturer's USA warranty. Not previously owned or used.
- Like New
- Essentially new with no signs of use. “Open box.” In manufacturer's packaging with original accessories and instructions. 180-day warranty.
- As Is
- Non-functional or damaged. Equipment will not work. Usable for parts. Not covered under KEH warranty and non-returnable.
Like New Minus
Like New Minus
Barely used with virtually no traces of wear. Only the closest inspections will reveal slight use. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Excellent Plus
Excellent Plus
Lightly used with limited signs of wear. Exceptionally nice but may have slight wear on finish visible. Lens glass could contain light dust or debris. Excellent picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Excellent
Excellent
Noticeably used with average signs of wear. Shows moderate wear for the age of the item, with the possibility of blemishes and/or minimal dings. Lens glass may have average dust and zoom/focus ring tension may have slight looseness or tightness overall, but will not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Bargain
Bargain
Frequently used with above-average wear. May have dents, dings, or finish loss. Lens glass may have small scratches, dust, and blemishes, and zoom/focus ring tension may have moderate looseness or tightness overall, but should not affect picture quality. Accessories usually not included, unless noted in listing. 180-day warranty.
Ugly
Ugly
Heavily used with extensive visible wear. Equipment is rough, with multiple impressions in the finish, excessive finish loss and brassing. Glass will have marks, fungus and/or heavy/cloudy haze which could affect picture quality. Accessories usually not included, unless noted in listing. Not covered under KEH warranty.
