AOI UCS-Q1i Ultra Compact Underwater Strobe Q1i - Black
Newest underwater strobe from AOI. This model has everything you need: InTeLi™ Mode, TTL - RC - Manual and HSS. A perfect and easy to handle, compact strobe with a GN of 22.
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UCS-Q1i: Powerful and Compact
The UCS-Q1i is a powerful and compact strobe that redefines underwater lighting technology. Building on the success of the UCS-Q1 and UCS-Q1RC, AOI Ltd continues to push the boundaries of underwater imaging innovation.
A Legacy of Excellence
The award-winning UCS-Q1 became a favorite among beginners thanks to its advanced features typically found in more premium models. The UCS-Q1RC introduced TTL integration for OM System cameras, delivering a seamless experience in both performance and design.
Innovation Through AOI InTeLi™ Mode
AOI Ltd further strengthened its reputation with the launch of the UIS-P1, which introduced AOI InTeLi™ Mode — a next-generation system specifically optimized for underwater photography.
Introducing the UCS-Q1i
The new UCS-Q1i combines the best features of the UCS-Q1 and UIS-P1. It inherits AOI InTeLi™ Mode, offering precise and consistent TTL exposure across a wide range of camera systems, surpassing traditional S-TTL and TTL performance. This intelligent mode automatically adjusts to camera settings, ensuring exceptional accuracy in exposure control.
Refined Macro Capabilities
Included in AOI InTeLi™ Mode is i-Macro Mode, designed to optimize light output for close-up shooting. Underwater photographers can capture intricate details with exceptional clarity, making beautifully lit macro shots easier than ever. AOI InTeLi™ Mode supports Sony TTL and i-Macro, OM System RC TTL and i-Macro, as well as TTL HSS and M-HSS modes.
Unmatched Performance
Most notably, the UCS-Q1i remains the brightest strobe in its class, with an impressive Guide Number 22 (GN22) at ISO100 — delivering powerful underwater illumination. Like the UIS-P1, it also supports High Speed Shutter (HSS) compatibility with Sony cameras, enabling photographers to freeze fast-moving underwater scenes with precision and clarity.
Specifications of the AOI UCS-Q1i
| Specification | Value | 
|---|---|
| Model Number | AOI UCS‑Q1i‑BLK | 
| Description | Ultra Compact Strobe – Q1i | 
| Main Body Color | Black | 
| Main Body Material | Polycarbonate + Glass Fiber | 
| Depth Rating | 60 meters | 
| Strobe | |
| Guide Number | GN 22 | 
| Color Temperature | 5600 K (5000 K with diffuser) | 
| Beam Angles (with diffuser) | Horizontal 85°, Vertical 85° | 
| Flash Recharge Time | 0.85 s (full power) | 
| Number of Flashes | 1,500 (full power, using flash only, with 3,100 mAh Li‑Ion batteries) | 
| Flash Sync. | By fiber-optic cable (multi-core cable recommended) | 
| Pre-flash Sync. | Pre-flash auto learning / cancellation | 
| Flash Modes | TTL, i‑Macro, OMDS, RC Flash (Group A, Channel 1); Sony TTL, HSS TTL; FP TTL Auto/Manual; Manual: 1/64, 1/32+0.5, 1/8, 1/4, 1/2, FULL | 
| Modeling Flash | 2 seconds flashing duration | 
| Flash Test Button | Yes | 
| LED Lights | |
| Maximum Output | 700 lumens | 
| Power Control | 25%, 50%, 100%, OFF | 
| Color Temperature | 5600 K | 
| Beam Angle | 45° | 
| Burn Time | 130 min (full power, with 3,100 mAh Li‑Ion batteries) | 
| Battery | |
| Requirements | 2 × 18650 Li‑Ion (not included) | 
| Output Current | Minimum 5 A | 
| Minimum Battery Length | 69 mm | 
| Mounting & Dimensions | |
| Strobe Mounting | 1″ ball mount (non-replaceable) | 
| Dimensions (L×W×H) | 125 × 77 × 131 mm | 
| Weight | |
| On Land | Approx. 550 g (batteries included) | 
| Underwater | Approx. 90 g (batteries included) | 
| Standard Accessories | |
| Included | • Strobe diffuser SD‑01 • Control knob extension CKE‑01 • Spare O‑ring set SOR‑01 • O‑ring remover ORR‑02 • Silicone grease (1.5 g) • Battery storage case BSC‑18650‑2 (batteries not included)  | 
| Manufacturer | AOI | 
|---|---|
| Max. depth | 60 meters | 
| Flash mode | Manual, TTL, RC, HSS | 
| Lumen output | 700 lumens | 
| Color temp. | 5600K | 
| Beam Angle | 85° | 












