Kase 150mm f/5.6 AF Reflex Mirror Lens 150mm
Combining a compact catadioptric design with rare autofocus capability, this 150mm f/5.6 lens delivers distinctive donut bokeh on full-frame Nikon Z cameras. Its lightweight 1104g build and fixed aperture create a unique, stylized look that sets it apart from conventional telephoto glass. This lens is best for portrait photographers seeking a compact, creative tool for rendering out-of-focus backgrounds with a signature ring effect.
Snapshot
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
- Q1 2026100/100
All five reviews are overwhelmingly positive, praising sharpness, fast autofocus, and low-light performance for both photo and video.
- Image quality is exceptional, sharp wide open.
- Autofocus is fast and snappy, especially with A7R5.
- Great for video work, sharp and quick to focus.
- Excellent low-light performance with f2.8 aperture.
- Q4 202590/100
Buyers are extremely pleased with sharpness and performance; calling it an amazing, rewarding lens they shoot with confidence.
- Lens delivers exceptional sharpness once locked on subject.
- Significant upgrade from Tamron 35-150, rewarding move to this Sony GM II.
- Fast, fuss-free delivery from B&H, which builds buyer confidence.
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Telephoto |
| Focal Length Min | 150 |
| Focal Length Max | 150 |
| Elements | 5 |
| Groups | 4 |
Aperture
| Max Aperture | f/5.6 |
| Min Aperture | f/5.6 |
| Constant | Yes |
Build
| Mount | Canon EF |
| Format | full-frame |
| Weight | 1.0 kg / 2.3 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 1500 |
vs Competition
| Spec | Kase 150mm f/5.6 AF Reflex Mirror Lens 150mm | Tamron Di III VC 28-300mm f/4-7.1 VXD | Sigma Contemporary 18-50mm f/2.8 DC DN | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Sony E 18-135mm f/3.5-5.6 OSS |
|---|---|---|---|---|---|---|
| Focal Length | 150mm | 28-300mm | 18-50mm | 17-28mm | 12-35mm | 18-135mm |
| Max Aperture | f/5.6 | f/4 | f/2.8 | f/2.8 | f/2.8 | f/3.5 |
| Mount | Canon EF | Sony E | Sony E | Nikon Z | Micro Four Thirds | Sony E |
| Stabilization | false | true | false | false | true | true |
| Weather Sealed | false | true | true | true | true | false |
| Weight (g) | 1043 | 590 | 290 | 450 | 306 | 326 |
| AF Type | Autofocus | VXD linear motor | stepping motor | Stepping Motor | Autofocus | Linear motor |
| Lens Type | telephoto | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Kase 150mm f/5.6 AF Reflex Mirror Lens 150mm | 53.9 | 52.6 | 17 | 41.1 | 0.4 | 52.8 | 80.9 | 33.6 | 98.6 | 36.8 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 98 | 77.9 | 65.1 | 85.8 | 96.7 | 66 | 91.2 | 97.7 | 55.8 | 82.4 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 86.8 | 81.8 | 86 | 91.7 | 82.2 | 83.9 | 80.9 | 78.6 | 89.8 | 36.8 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 86.8 | 87 | 75.2 | 85.8 | 88.2 | 83.9 | 91.2 | 68 | 69.8 | 36.8 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.9 | 81.8 | 85.4 | 51 | 86.5 | 83.9 | 63.7 | 80.6 | 85.5 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 75.4 | 72.5 | 40.3 | 78.5 | 77.3 | 44.7 | 95.8 | 89.8 | 82.4 |
