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Aputure
Aputure Light Dome III
$219
Best Photography Softboxes · head-to-head
Aputure Light Dome III vs Westcott Rapid Box Switch Octa-M (36in)
A sourced, side-by-side comparison. Westcott Rapid Box Switch Octa-M (36in) is cheaper at $209.9. Every spec and price links to its source.
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Westcott
Westcott Rapid Box Switch Octa-M (36in)
$209.9Cheaper
Which is better: the Aputure Light Dome III or Westcott Rapid Box Switch Octa-M (36in)?
On the specs we track, they're closely matched. The Westcott Rapid Box Switch Octa-M (36in) is the cheaper at $209.9.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Aputure Light Dome III | Westcott Rapid Box Switch Octa-M (36in) |
|---|---|---|
| US price | $219 | $209.9 Current fjwestcott.com price |
| Brand | Aputure | Westcott |
| Released | — | — |
| Shape | 32-sided circular dome (octa-style) | octa |
| Size | 90cm / 3ft diameter | 36in nominal diameter |
| Mount type | Bowens | Westcott Switch Insert (proprietary quick-lock, not a standard speedring) |
| Diffusion layers | 2 (1-stop and 2-stop diffusion cloths included) | 1 |
| Grid included | Yes | No |
| Recessed front | No | — |
| Speedring compatibility | Bowens mount; fits all Aputure Bowens-mount COB lights and third-party Bowens lights | Not a standard speedring; uses interchangeable Switch Inserts for Bowens/Profoto/Elinchrom/other mounts sold separately |
| Fabric | reflective interior with 16 heavy-duty steel support rods; quick-folding flat-pack hinged speedring | heat-resistant fabric over aluminum frame, taut silver interior |
Sources — Aputure Light Dome III: aputure.com (verified 2026-08-12). Westcott Rapid Box Switch Octa-M (36in): fjwestcott.com (verified 2026-08-12).
What's the difference between the Aputure Light Dome III and Westcott Rapid Box Switch Octa-M (36in)?
Where the two actually differ on the specs we track (7 of 8). Matching specs are omitted.
- Shape: Aputure Light Dome III 32-sided circular dome (octa-style) vs Westcott Rapid Box Switch Octa-M (36in) octa
- Size: Aputure Light Dome III 90cm / 3ft diameter vs Westcott Rapid Box Switch Octa-M (36in) 36in nominal diameter
- Mount type: Aputure Light Dome III Bowens vs Westcott Rapid Box Switch Octa-M (36in) Westcott Switch Insert (proprietary quick-lock, not a standard speedring)
- Diffusion layers: Aputure Light Dome III 2 (1-stop and 2-stop diffusion cloths included) vs Westcott Rapid Box Switch Octa-M (36in) 1
- Grid included: Aputure Light Dome III true vs Westcott Rapid Box Switch Octa-M (36in) false
- Speedring compatibility: Aputure Light Dome III Bowens mount; fits all Aputure Bowens-mount COB lights and third-party Bowens lights vs Westcott Rapid Box Switch Octa-M (36in) Not a standard speedring; uses interchangeable Switch Inserts for Bowens/Profoto/Elinchrom/other mounts sold separately
- Fabric: Aputure Light Dome III reflective interior with 16 heavy-duty steel support rods; quick-folding flat-pack hinged speedring vs Westcott Rapid Box Switch Octa-M (36in) heat-resistant fabric over aluminum frame, taut silver interior