Pentax HD Pentax-D FA Macro 20320 100mm
The 100mm f/2.8 macro stands out as the first Pentax macro lens with all-weather AW dustproof, weather-resistant sealing, offering 1:1 magnification at a 5.1-inch minimum focus distance on full-frame. Quick-shift autofocus and a rounded eight-blade diaphragm complement ED elements and HD coating for sharp contrast and smooth bokeh in a trim 348g body using 49mm filters. It’s best for macro photographers who need a rugged, portable lens for close-up work in adverse conditions, though its portrait rendering scores poorly.
Snapshot
Pros & Cons
Pros
- Strong macro (91st percentile) 91st
- Strong user sentiment (91st percentile) 91st
- Strong build (83rd percentile) 83rd
Cons
- Below average aperture (5th percentile)
- Below average bokeh (5th percentile)
- Below average versatility (33rd percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Based on 9 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Macro |
| Focal Length Min | 100 |
| Focal Length Max | 100 |
| Elements | 10 |
| Groups | 8 |
| Aspherical Elements | 0 |
| ED Elements | 1 |
| Coating | HD Coating, SP (Super Protect) Coating |
Aperture
| Max Aperture | f/32 |
| Min Aperture | f/2.8 |
| Constant | Yes |
| Diaphragm Blades | 8 |
Build
| Mount | Pentax K |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.3 kg / 0.8 lbs |
| Filter Thread | 49 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 130 |
| Max Magnification | 1:1 |
vs Competition
| Spec | Pentax HD Pentax-D FA Macro 20320 100mm | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Sigma Art 17-40mm f/1.8 DC | Sony G SELP28135G.SYX | Panasonic LUMIX S S-R2060 |
|---|---|---|---|---|---|---|
| Focal Length | 100mm | 17-70mm | 17-28mm | 17-40mm | 28-135mm | 20-60mm |
| Max Aperture | f/32 | f/2.8 | f/2.8 | f/1.8 | f/4 | f/3.5 |
| Mount | Pentax K | Fujifilm X | Nikon Z | Fujifilm X | Sony E | L-Mount |
| Stabilization | false | true | false | false | true | false |
| Weather Sealed | true | true | true | true | true | true |
| Weight (g) | 350 | 544 | 450 | 535 | 420 | 350 |
| AF Type | Autofocus | RXD | Stepping Motor | HLA (High-response Linear Actuator) | SSM | stepping motor |
| Lens Type | macro | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Pentax HD Pentax-D FA Macro 20320 100mm | 53.7 | 5.4 | 82.5 | 91.3 | 58.6 | 5 | 90.8 | 33.3 | 54.9 | 37.8 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.7 | 87.4 | 69.6 | 85.9 | 91 | 84.6 | 63.5 | 89.3 | 85.1 | 83.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87.4 | 87.4 | 75.9 | 85.9 | 88 | 84.6 | 90.8 | 67.3 | 68.8 | 37.8 |
| Sigma Art 17-40mm f/1.8 DC Compare | 53.7 | 96.4 | 70.3 | 74.6 | 97 | 93.8 | 0 | 75.7 | 82.8 | 37.8 |
| Sony G SELP28135G.SYX Compare | 94.4 | 78.4 | 77.7 | 34.1 | 88 | 67.1 | 63.5 | 92.4 | 55.7 | 93.4 |
| Panasonic LUMIX S S-R2060 Compare | 87.4 | 85.5 | 82.5 | 66.9 | 78.4 | 77.9 | 0 | 81.4 | 69 | 37.8 |
Price
Value & Pricing
Amazon.com.mx 1 offer From MX$13,066
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
