Tamron Di III 17-70mm f/2.8 Di III-A VC RXD
Tamron
99 Overall Score
vs
IRIX Blackstone 15mm f/2.4 Blackstone 15mm
IRIX
46 Overall Score
Scores
Video Cinema
Budget
Professional
Macro
Portrait
Landscape
Travel
Street
Wildlife Sports
Specifications
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | IRIX Blackstone 15mm f/2.4 Blackstone 15mm | |
|---|---|---|
| Optics | ||
| Type | zoom | prime |
| Focal Length Min | 17 mm | 15 mm |
| Focal Length Max | 70 mm | 15 mm |
| Elements | 16 | 15 |
| Groups | 12 | 11 |
| Aspherical Elements | 3★ | 2 |
| ED Elements | 2 | 2 |
| Coating | Fluorine Coating | Neutrino coating |
| Aperture | ||
| Max Aperture | f/2.8 | f/22 |
| Min Aperture | f/2.8 | f/2.4 |
| Constant | ✓★ | ✗ |
| Diaphragm Blades | 9 | 9 |
| Build | ||
| Mount | Sony E | Pentax K |
| Format | APS-C | full-frame★ |
| Weather Sealed | ✓ | ✓ |
| Weight | 0.54 kg★ | 0.69 kg |
| Filter Thread | 67 mm | 95 mm |
| AF & Stabilization | ||
| AF Type | RXD | manual focus only |
| Stabilization | ✓★ | ✗ |
| Focus | ||
| Min Focus Distance | 190 mm★ | 280 mm |
| Max Magnification | 1:4.8 | 1:2 |
Pros & Cons
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD
- Strong optical (91st percentile)91st %ile
- Strong versatility (89th percentile)89th %ile
- Strong social proof (86th percentile)86th %ile
- Strong bokeh (86th percentile)86th %ile
IRIX Blackstone 15mm f/2.4 Blackstone 15mm
- Strong optical (86th percentile)86th %ile
- Strong macro (74th percentile)
- Strong social proof (72nd percentile)
- Below average af (13th percentile)13th %ile
- Below average aperture (20th percentile)20th %ile
- Below average bokeh (23rd percentile)
- Below average versatility (34th percentile)
Pricing
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD0.167score per dollar
vs
IRIX Blackstone 15mm f/2.4 Blackstone 15mm0.139score per dollar
Tamron Di III 17-70mm f/2.8 Di III-A VC RXD offers 1.2x better value for money
Verdict
Winner: Tamron Di III 17-70mm f/2.8 Di III-A VC RXD
Scores 99 overall, wins 9 of 9 usage categories and 5 of 21 specs.
