AstrHori 28mm f/13 2x Macro Probe Review
The AstrHori 28mm probe lens is a sharp, one-trick pony for extreme close-ups. But with a fixed f/13 aperture and niche design, it's only worth it for very specific shooters.
Overview
This is a weird one, and that's the whole point. The Canon AstrHori 28mm f/13 is a dedicated macro probe lens, built for getting your camera into tiny, hard-to-reach spaces. It's not a general-purpose lens at all. Think of it as a specialized tool for product shots, nature close-ups, or creative video work where you need that unique, immersive perspective.
Performance
For its specific job, the optics are sharp, landing in the 98th percentile. The 2:1 magnification and 90-degree side view let you capture details you just can't get with a normal macro lens. But the trade-offs are huge. The fixed f/13 aperture means you need tons of light, autofocus is mediocre at best (48th percentile), and there's no stabilization. It's a one-trick pony, but it does that trick very well.
Pros & Cons
Pros
- Strong optical (98th percentile) 98th
- Strong macro (68th percentile) 71th
Cons
- Below average aperture (9th percentile) 10th
- Below average bokeh (9th percentile) 11th
- Below average build (10th percentile) 11th
Specifications
Full Specifications
Optics
| Focal Length Min | 28 |
| Focal Length Max | 28 |
| Elements | 21 |
| Groups | 16 |
Aperture
| Max Aperture | f/13 |
| Min Aperture | f/40 |
| Diaphragm Blades | 7 |
Build
| Mount | Canon RF |
| Format | Full-Frame |
| Weight | 0.8 kg / 1.7 lbs |
AF & Stabilization
| Stabilization | No |
Focus
| Min Focus Distance | 488 |
| Max Magnification | 2:1 |
Value & Pricing
At around $909, this isn't an easy buy. You're paying for a niche tool. If you're a product photographer, a serious macro hobbyist, or a videographer needing that probe look, it might be worth it because nothing else does this. For everyone else, it's a very expensive paperweight. The value is entirely in how badly you need its one specific superpower.
vs Competition
Don't compare this to normal lenses like the Viltrox 35mm f/1.7 or Meike 55mm f/1.8. Those are versatile, fast primes for everyday shooting. This probe lens is the opposite. A fairer comparison is other macro solutions. A standard 100mm macro lens will give you better autofocus, a wider aperture, and more versatility for similar or less money, but it won't let you slide the camera into a flower bud or over a circuit board. You're choosing between a specialized tool and a generalist.
Verdict
Buy this only if you already know exactly why you need it. It's for a photographer or videographer who looks at a bug's eye or a watch mechanism and thinks, 'I need to get my lens in there.' For that person, it's a game-changing tool. For anyone just curious about macro, start with a traditional macro lens. This probe is a fascinating, highly effective specialist that most people should admire from afar.