HD Pentax-D FA 21mm f/2.4 ED Limited DC WR § 03 Head to head
HD Pentax-D FA 21mm f/2.4 ED Limited DC WR vs Mitakon 20 mm f/2.0 4.5x Super Macro
Pentax 21mm f/2.4 has a longer reach. Mitakon 20mm f/2 is 0.5 stops brighter maximum aperture.
The HD Pentax-D FA 21mm f/2.4 ED Limited DC WR is a 21mm f/2.4 prime, and the Mitakon 20 mm f/2.0 4.5x Super Macro is a 20mm f/2 prime. On paper the Mitakon 20 mm f/2.0 4.5x Super Macro comes out ahead, 5 advantages to 4, but which one suits you depends on what you shoot.
HD Pentax-D FA 21mm f/2.4 ED Limited DC WR 
Mitakon 20 mm f/2.0 4.5x Super Macro 01
Key differences
Why is the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR better than the Mitakon 20 mm f/2.0 4.5x Super Macro?
- Longer reach (21mm vs 20mm)
- Focuses 1 cm closer (0.19 m vs 0.2 m)
- More aperture blades (8 vs 3)
- Newer design (2021 vs 2016)
Why is the Mitakon 20 mm f/2.0 4.5x Super Macro better than the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR?
- 0.5 stops brighter maximum aperture (f/2 vs f/2.4)
- Wider field of view (20mm vs 21mm)
- 186 g lighter (230 g vs 416 g)
- 27 mm shorter (62 mm vs 89 mm long)
- Has a physical aperture ring
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Which should you buy?
- landscape For landscape photography, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: it goes wider, to 20mm against 21mm.
- architecture For architecture, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: it goes wider, to 20mm against 21mm.
- macro For macro photography, the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR has the edge: it focuses closer, down to 0.19 m.
- low-light For low-light shooting, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: its f/2 aperture gathers more light than f/2.4.
- astrophotography For astrophotography, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: its f/2 aperture gathers more light than f/2.4.
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Specification
| Specification | HD Pentax-D FA 21mm f/2.4 ED Limited DC WR | Mitakon 20 mm f/2.0 4.5x Super Macro |
|---|---|---|
| Focal length | 21mm | 20mm |
| Maximum aperture | f/2.4 | f/2 ◆ |
| Minimum aperture | f/22 | f/16 |
| Lens type | Ultra-wide-angle prime lens | Prime lens |
| Format | Full Frame | Full frame |
| Weight | 416 g (14.7 oz) | 230 g (8.11 oz) ◆ |
| Dimensions | 69 mm (diameter) x 89 mm (length) | 60 x 62 mm |
| Minimum focusing distance | 0.19 m (7.5 inches) ◆ | 0.2 m (7.87 inches) |
| Maximum magnification | 0.26x | — |
| Image stabilization | No | No |
| Weather sealing | Yes | — |
| Aperture ring | No | Yes |
| Aperture blades | 8 (rounded) ◆ | 3 |
| Optical construction | 11 elements in 8 groups (including 4 ED elements and 1 Super ED element) | 6 elements / 4 groups |
| Filter size | 67 mm | — |
| Lens mount | Pentax K | Canon EF, Nikon F, Sony A, Pentax K, Micro Four Thirds, Sony E, Fujifilm X |
| Released | 2021 | 2016 |
| Price | — | $199 launch price |
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Size
- A · HD
- B · Mitakon
- 89 × 69 mm
- 62 × 60 mm
The HD Pentax-D FA 21mm f/2.4 ED Limited DC WR is 27 mm longer and 186 g heavier than the Mitakon 20 mm f/2.0 4.5x Super Macro.
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Sample frames
HD Pentax-D FA 21mm f/2.4 ED Limited DC WR
![-BASZ9697-Smc PENTAX-FABASZ9697 300mm F4.5 ED[IF]](https://live.staticflickr.com/1709/25890919725_2de90d3543.jpg)
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Video reviews
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Questions
- Which lens has the brighter aperture, the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR or the Mitakon 20 mm f/2.0 4.5x Super Macro?
- The Mitakon 20 mm f/2.0 4.5x Super Macro opens to f/2, against f/2.4 on the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR, 0.5 stops brighter.
- Which is lighter, the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR or the Mitakon 20 mm f/2.0 4.5x Super Macro?
- The Mitakon 20 mm f/2.0 4.5x Super Macro weighs 230 g, 186 g less than the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR (416 g).
- Which focuses closer, the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR or the Mitakon 20 mm f/2.0 4.5x Super Macro?
- The HD Pentax-D FA 21mm f/2.4 ED Limited DC WR focuses down to 0.19 m, against 0.2 m for the Mitakon 20 mm f/2.0 4.5x Super Macro.
- Do the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR and the Mitakon 20 mm f/2.0 4.5x Super Macro have image stabilization?
- No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
- Is the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR or the Mitakon 20 mm f/2.0 4.5x Super Macro better for landscape photography?
- For landscape photography, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: it goes wider, to 20mm against 21mm.
- Is the HD Pentax-D FA 21mm f/2.4 ED Limited DC WR or the Mitakon 20 mm f/2.0 4.5x Super Macro better for architecture?
- For architecture, the Mitakon 20 mm f/2.0 4.5x Super Macro has the edge: it goes wider, to 20mm against 21mm.
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