Sony FE 400-800mm f/6.3-8 G OSS
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
What Buyers Say
Sony FE 400-800mm f/6.3-8 G OSS
The Sony 400-800mm lens is praised for its sharpness and fast autofocus, often outperforming the 200-600mm. However, it is heavy, front-heavy, and requires fast shutter speeds and good light due to the F8 aperture. A significant concern is a reported crack in the fluorine coating not covered by warranty, leading to frustration.
Pros
- Sharp image quality
- Fast autofocus
- Outperforms 200-600mm
- Internal focusing
- Great for wildlife photography
Cons
- Heavy and front-heavy
- F8 aperture limits low-light use
- Requires fast shutter speeds
- Warranty does not cover coating cracks
- Expensive extended warranty needed
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
The Pentax HD DA 20-40mm f/2.8-4 ED Limited DC WR lens is highly praised for its superb build quality, sharpness, and beautiful color rendition. Users love it as a versatile walk-around lens for street photography and landscapes, especially on APS-C bodies like the K-3. The main drawbacks are its variable aperture and a price that many feel is too high for the performance gain over kit lenses.
Pros
- Superb build quality
- Excellent sharpness
- Beautiful color rendition
- Weather resistant
- Versatile focal range for street and landscape
Cons
- Variable aperture (f/2.8-4)
- High price for performance gain
- Limited zoom range
- Not as wide as some kit lenses
Scores
Specifications
| Sony FE 400-800mm f/6.3-8 G OSS | Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm | |
|---|---|---|
| Optics | ||
| Type | super-telephoto | zoom |
| Focal Length Min | 400 mm | 20 mm |
| Focal Length Max | 800 mm | 40 mm |
| Elements | 27 | 9 |
| Groups | 19 | 8 |
| Aspherical Elements | — | 1★ |
| ED Elements | 6★ | 1 |
| Coating | Fluorine coating | HD coating |
| Aperture | ||
| Max Aperture | f/6.3 | f/2.8 |
| Min Aperture | 6.3-8 | 2.8-4 |
| Constant | ✗ | ✗ |
| Diaphragm Blades | 11★ | 9 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | full-frame★ | APS-C |
| Weather Sealed | ✓ | ✓ |
| Weight | 2.47 kg | 0.28 kg★ |
| Filter Thread | 105 mm | 55 mm |
| AF & Stabilization | ||
| AF Type | Linear motor★ | Autofocus |
| Stabilization | ✓ | ✓ |
| Focus | ||
| Min Focus Distance | 1.70 m | 40 mm★ |
| Max Magnification | 1:4.34 | 1:5 |
Pros & Cons
Sony FE 400-800mm f/6.3-8 G OSS
- Strong optical (100th percentile)100th %ile
- Strong af (98th percentile)98th %ile
- Strong stabilization (81st percentile)81st %ile
- Strong versatility (72nd percentile)
- Below average build (10th percentile)10th %ile
- Below average user sentiment (16th percentile)16th %ile
Pentax HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom 40mm
- Strong macro (97th percentile)97th %ile
- Strong bokeh (89th percentile)89th %ile
- Strong aperture (87th percentile)87th %ile
- Strong build (86th percentile)86th %ile
Verdict
Scores 86 overall, wins 7 of 9 usage categories and 3 of 21 specs.