BM Premium 420mm Lens 420-1600mm
Tamron Di III 28-75mm f/2.8 Di III VXD G2
What Buyers Say
BM Premium 420mm Lens 420-1600mm
The lens receives mixed feedback: some users praise its value for money and image quality for certain uses like architecture, but many report serious issues including incompatibility with Canon EOS R8, poor image quality, flimsy plastic build, and slow autofocus unsuitable for wildlife. The need for a tripod due to bulkiness and manual focus annoyance are also noted.
Pros
- Good value for money
- Decent image quality for architecture
- Pleasant for certain projects
Cons
- Incompatible with Canon EOS R8
- Poor image quality
- Flimsy plastic zoom mechanism
- Slow autofocus for wildlife
- Bulky requiring tripod
Tamron Di III 28-75mm f/2.8 Di III VXD G2
The Tamron 28-75mm f/2.8 lens is highly praised for its sharpness, fast autofocus, and lightweight design, making it a versatile and affordable alternative to Sony's GM lenses. Users appreciate its performance in portraits and low light, though some note the plastic build and lack of weather sealing as drawbacks. Overall, it is considered an excellent value for both enthusiasts and professionals.
Pros
- Sharp image quality
- Fast and accurate autofocus
- Lightweight design
- Versatile focal range
- Good value for money
Cons
- Plastic build quality
- No weather sealing
- Zoom ring reversed from focus ring
- Slightly long for discrete use
- Colors slightly duller than GM lenses
Scores
Specifications
| BM Premium 420mm Lens 420-1600mm | Tamron Di III 28-75mm f/2.8 Di III VXD G2 | |
|---|---|---|
| Optics | ||
| Type | telephoto | zoom |
| Focal Length Min | 420 mm | 28 mm |
| Focal Length Max | 1600 mm | 75 mm |
| Elements | — | 17 |
| Groups | — | 15 |
| Aspherical Elements | — | 2★ |
| ED Elements | — | 2★ |
| Coating | multi-coated optical glass | Fluorine Coating |
| Aperture | ||
| Max Aperture | f/8.3 | f/2.8 |
| Min Aperture | f/8.3 | f/2.8 |
| Constant | ✓ | ✓ |
| Diaphragm Blades | — | 9★ |
| Build | ||
| Mount | Sony A | Sony E |
| Format | — | full-frame★ |
| Weather Sealed | — | ✓★ |
| Weight | 0.98 kg | 0.54 kg★ |
| Filter Thread | 62 mm | 67 mm |
| AF & Stabilization | ||
| AF Type | manual focus only | VXD |
| Stabilization | ✓★ | ✗ |
| Focus | ||
| Min Focus Distance | 420 mm | 180 mm★ |
| Max Magnification | — | 1:2.7★ |
Pros & Cons
BM Premium 420mm Lens 420-1600mm
- Strong versatility (86th percentile)86th %ile
- Strong stabilization (82nd percentile)82nd %ile
- Below average user sentiment (1st percentile)1st %ile
- Below average social proof (11th percentile)11th %ile
- Below average af (13th percentile)13th %ile
- Below average build (19th percentile)19th %ile
Tamron Di III 28-75mm f/2.8 Di III VXD G2
- Strong optical (92nd percentile)92nd %ile
- Strong bokeh (87th percentile)87th %ile
- Strong macro (87th percentile)87th %ile
- Strong social proof (85th percentile)85th %ile
Pricing
BM Premium 420mm Lens 420-1600mm offers 1.2x better value for money
Verdict
Scores 91 overall, wins 9 of 9 usage categories and 8 of 21 specs.
