# Aputure Light Dome III vs Elinchrom Rotalux Deep Octa 100cm: specs and price compared

A sourced, side-by-side comparison of the Aputure Light Dome III (Aputure) and Elinchrom Rotalux Deep Octa 100cm (Elinchrom) among photography softboxes.

## Side by side

| Spec | Aputure Light Dome III | Elinchrom Rotalux Deep Octa 100cm |
| --- | --- | --- |
| US price | $219 | not published |
| Brand | Aputure | Elinchrom |
| Shape | 32-sided circular dome (octa-style) | deep octa |
| Size | 90cm / 3ft diameter | 100cm / 39.4in |
| Mount type | Bowens | Elinchrom (Rotalux Speedring sold separately, item EL-26570) |
| Diffusion layers | 2 (1-stop and 2-stop diffusion cloths included) | 2 |
| Grid included | Yes | No |
| Recessed front | No | Yes |
| Speedring compatibility | Bowens mount; fits all Aputure Bowens-mount COB lights and third-party Bowens lights | Elinchrom native mount by default; the Rotalux speedring system also offers Bowens, Profoto, and Balcar adapter rings sold separately |
| Fabric | reflective interior with 16 heavy-duty steel support rods; quick-folding flat-pack hinged speedring | reflective silver interior cloth (item EL-26219) on a folding rod frame |

## Key differences

- Shape: Aputure Light Dome III 32-sided circular dome (octa-style) vs Elinchrom Rotalux Deep Octa 100cm deep octa
- Size: Aputure Light Dome III 90cm / 3ft diameter vs Elinchrom Rotalux Deep Octa 100cm 100cm / 39.4in
- Mount type: Aputure Light Dome III Bowens vs Elinchrom Rotalux Deep Octa 100cm Elinchrom (Rotalux Speedring sold separately, item EL-26570)
- Diffusion layers: Aputure Light Dome III 2 (1-stop and 2-stop diffusion cloths included) vs Elinchrom Rotalux Deep Octa 100cm 2
- Grid included: Aputure Light Dome III Yes vs Elinchrom Rotalux Deep Octa 100cm No
- Recessed front: Aputure Light Dome III No vs Elinchrom Rotalux Deep Octa 100cm Yes
- Speedring compatibility: Aputure Light Dome III Bowens mount; fits all Aputure Bowens-mount COB lights and third-party Bowens lights vs Elinchrom Rotalux Deep Octa 100cm Elinchrom native mount by default; the Rotalux speedring system also offers Bowens, Profoto, and Balcar adapter rings sold separately
- Fabric: Aputure Light Dome III reflective interior with 16 heavy-duty steel support rods; quick-folding flat-pack hinged speedring vs Elinchrom Rotalux Deep Octa 100cm reflective silver interior cloth (item EL-26219) on a folding rod frame

## Sources

- Aputure Light Dome III: https://www.aputure.com/products/light-dome-iii (aputure.com, verified 2026-08-12)
- Elinchrom Rotalux Deep Octa 100cm: https://elinchrom.com/en/Home/Shop/Light_Modifiers/Softboxes/Elinchrom_Softbox_Rotalux_Deep_Octa_100_cm?id=EL-26648 (elinchrom.com, verified 2026-08-12)

Canonical: https://frontdeskreview.com/gear/photography-softboxes/aputure-light-dome-iii-vs-elinchrom-rotalux-deep-octa-100cm/
Cite: Per The Front Desk Review, Aputure Light Dome III ($219) vs Elinchrom Rotalux Deep Octa 100cm (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/photography-softboxes/aputure-light-dome-iii-vs-elinchrom-rotalux-deep-octa-100cm/
License: CC BY 4.0.