Tamron 35-150mm F/2-2.8 Di III VXD vs Voigtlander SEPTON 40mm f/2 Aspherical
The bottom line
The Tamron 35-150mm F/2-2.8 Di III VXD is a zoom (35-150mm) and the Voigtlander SEPTON 40mm f/2 Aspherical is a 40mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter and lighter to carry. Choose flexibility or a fast single focal length.
Choose the Tamron 35-150mm F/2-2.8 Di III VXD if…
- ✓You need more reach — it goes to 150mm vs 40mm for distant subjects, wildlife and sport.
- ✓You want one-lens flexibility — a 35-150mm zoom covers what the fixed 40mm can't reframe.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Choose the Voigtlander SEPTON 40mm f/2 Aspherical if…
- ✓You prefer a fast, compact single focal length — a 40mm prime over a zoom.
- ✓You value portability — at 190g (6.7 oz) it's lighter than the 1165g (2.57 lb) alternative for travel and all-day carry.
Where they differ
- ›Focal range: Tamron 35-150mm F/2-2.8 Di III VXD is 35-150mm, Voigtlander SEPTON 40mm f/2 Aspherical is 40mm — different framing and reach.
- ›Type: the Tamron 35-150mm F/2-2.8 Di III VXD is a zoom (flexible framing), the Voigtlander SEPTON 40mm f/2 Aspherical a prime (one focal length, usually brighter and lighter).
- ›Weight: the Voigtlander SEPTON 40mm f/2 Aspherical is 190g (6.7 oz) vs 1165g (2.57 lb) — you'll feel the difference handheld.
- ›Durability: the Tamron 35-150mm F/2-2.8 Di III VXD is weather-sealed; the other isn't.
Frequently asked
Is the Tamron 35-150mm F/2-2.8 Di III VXD or the Voigtlander SEPTON 40mm f/2 Aspherical better?
The Tamron 35-150mm F/2-2.8 Di III VXD is a zoom (35-150mm) and the Voigtlander SEPTON 40mm f/2 Aspherical is a 40mm prime. The zoom gives you framing flexibility from one lens; the prime trades that for a fixed focal length that's usually brighter and lighter to carry. Choose flexibility or a fast single focal length.
Who should choose the Tamron 35-150mm F/2-2.8 Di III VXD?
Choose the Tamron 35-150mm F/2-2.8 Di III VXD if you need more reach — it goes to 150mm vs 40mm for distant subjects, wildlife and sport. Choose it if you want one-lens flexibility — a 35-150mm zoom covers what the fixed 40mm can't reframe. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Who should choose the Voigtlander SEPTON 40mm f/2 Aspherical?
Choose the Voigtlander SEPTON 40mm f/2 Aspherical if you prefer a fast, compact single focal length — a 40mm prime over a zoom. Choose it if you value portability — at 190g (6.7 oz) it's lighter than the 1165g (2.57 lb) alternative for travel and all-day carry.
What is the main difference between the Tamron 35-150mm F/2-2.8 Di III VXD and the Voigtlander SEPTON 40mm f/2 Aspherical?
Focal range: Tamron 35-150mm F/2-2.8 Di III VXD is 35-150mm, Voigtlander SEPTON 40mm f/2 Aspherical is 40mm — different framing and reach.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 35-150mm | 40mm |
| Lens Type | Zoom | Prime |
| Optical Elements | 22 | 9 |
| Optical Groups | 15 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/2 | f/2 |
| Minimum Aperture | f/22 | f/16 |
| Aperture Blades | 9 | 10 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 63° – 16° | 57° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | No |
| Focus Motor | VXD | − |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | No |
| Min Focus Distance | 33 cm | 40 cm |
| Max Magnification | 0.12x | 0.15x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $999 | $999 |
| Filter Size | 82mm | 49mm |
| Diameter | 89.8mm | 61.5mm |
| Length | 157.8mm | 56.3mm |
| Weight | 1165g (2.57 lb) | 190g (6.7 oz) |
| Weather Sealed | Yes | No |
| Tripod Collar | No | No |
