ULANZI SL01 Mini Camera Flash, GN8 6500K Mini Flash Speedlite, 4 Power Levels
Quick take
The ULANZI SL01 is a tiny shoe-mount flash for photographers who want a simple, manual light source on the camera. It offers four brightness levels, 6500K color temperature, and sync up to 1/250s, powered by an internal battery you charge via USB-C. The main buying caveat is compatibility, it is not TTL and it requires a single-contact hot shoe, with an explicit “not fits” list (including Sony ZV-1F).
Pros and cons
Pros
- Manual flash with four brightness levels (1/1, 1/2, 1/4, 1/8) for quick adjustments
- GN8 lighting and 6500K color temperature, intended for accurate-looking color in mixed setups
- Sync support up to 1/250s for faster shutter use
- USB-C charging with internal battery, rated for 500+ full-power flashes
- Very compact and lightweight for travel and on-the-go shooting
Cons
- Not TTL, so you will need to control flash output yourself
- Compatibility depends on the camera having a single-contact hot shoe, and it does not work with several specific models
- USB-C charging requires the right cable and power source, and no charger or cable is included
What buyers think
Buyer-review evidence is limited, but the feedback that exists points to a few consistent themes. Many users highlight the flash’s small size and portability, and they report it being easy to mount on supported cameras (with the Sony ZV-E10 appearing frequently). Brightness is a common point as well, with some users noting that even the lowest setting can be quite strong, which implies a learning curve for dialing it down. There is also at least limited feedback that setup and charging are straightforward, while one negative report indicates a failure to turn on, though the overall pattern is too limited to treat it as a guaranteed issue.
What the ULANZI SL01 mini flash is for
The SL01 is a compact speedlite meant for everyday creative control. Because it is a manual flash, it fits best when you are comfortable setting flash power yourself and want a lightweight way to add fill light outdoors, brighten faces indoors, or improve consistency for casual portraits and product-like stills.
Key features that matter in real shooting
Four power levels and manual control
The SL01 uses four output steps (1/1, 1/2, 1/4, 1/8). This makes it practical for fast iteration, for example, stepping down power for closer subjects or stronger ambient light. Since it is manual, you will typically adjust brightness based on distance, subject reflectivity, and ambient conditions.
GN8 guide number and 6500K color temperature
Its GN8 (ISO100) rating and stated 6500±300K color temperature are designed to produce consistent results with flash photography. That 6500K target is especially useful if you shoot in daylight-like environments and want your flash to look reasonably natural rather than extremely warm or cool.
Sync up to 1/250s
For faster shutter speeds, the SL01 supports sync up to 1/250s. This can help when you want to keep motion sharp or manage ambient brightness while still using flash.
Charging and battery practicality
It has an internal 250mAh lithium battery and is rated for over 500 full-power flashes per charge. Charging is via USB-C at 5V/1A, and the device is described as fully recharging in about 60 minutes. That makes it a good match for users who already carry a power bank or USB charger for travel.
Compatibility you need to verify before buying
Compatibility is the SL01’s biggest decision factor. The flash is designed for cameras with a single-contact hot shoe and is not TTL. There is an explicit “not compatible” note that includes Sony ZV-1F (and several other models), and there is also a long supported list across major brands.
Before you purchase: confirm your camera uses a single-contact hot shoe and verify it appears in the compatible list. If you are unsure about your specific hot shoe type, it is smart to check with the seller or manufacturer support before ordering.
Setup tips, including Fujifilm
For Fujifilm bodies, the flash function may be disabled by default. The recommended approach is to switch the camera to S mode, find the built-in flash setting, then change it from “Flash Disabled” to manual flash mode (M) using the circular control dial near the Q button.
Pros and cons for specific buyers
Best for
- Travel and street photographers who want a small shoe-mount flash
- Creators using supported Sony, Canon, Nikon, Fuji, Panasonic, Leica, Olympus, or Pentax models with a compatible single-contact hot shoe
- Photographers who do not need TTL and prefer manual power control
- Anyone who wants a simple way to add fill light without carrying a larger speedlite
Who should avoid it
- Buyers who need TTL auto flash, the SL01 is not TTL
- Owners of cameras in the explicit “not compatible” list, including Sony ZV-1F
- People who want a “click it on and go” flash experience with full automation
Is the ULANZI SL01 worth it?
If you are shopping for a budget-friendly, pocketable shoe-mount flash and you are confident with manual exposure, the SL01 offers a practical feature set: four power levels, stated GN8 output, and sync up to 1/250s, plus USB-C charging that fits modern travel habits. The value drops if you require TTL or if your camera hot shoe type is not supported, because the primary tradeoff here is compatibility and automation level rather than light power alone.
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FAQ
Is the ULANZI SL01 compatible with sony ZV-1F?
No. The SL01 is specifically noted as not fitting Sony ZV-1F.
Does the SL01 have TTL auto flash?
No. It is a manual flash design and does not offer TTL.
How many power levels does the SL01 support?
It provides four brightness settings: 1/1, 1/2, 1/4, and 1/8.
What is the flash sync speed?
The SL01 supports shutter speeds up to 1/250s.
How do you charge the flash?
It charges using USB-C (5V/1A). The product notes that a charger and cable are not included.
Does it work on Fujifilm cameras out of the box?
Fujifilm flash can be disabled by default, so you may need to enable manual flash mode in the camera settings (for example, using S mode and switching the flash from “Disabled” to “M”).
How portable is the SL01?
It is designed to be very compact and lightweight (around 0.07 lb stated as ultra-light), making it easier to pack than larger speedlites.
Specifications
| Product Title | ULANZI SL01 Mini Camera Flash, GN8 6500K Mini Flash Speedlite, 4 Power Levels, Compatible with Sony ZV-1/ZV-E10/Canon/Nikon/Fuji/Panasonic/Leica/Olympus, 【Not Fits Sony ZV-1F】 |
|---|---|
| Category | Electronics > Camera & Photo > Flashes > Shoe Mount Flashes |
| Brand | ULANZI |
| Manufacturer | ULANZI |
| Model Name | SL01 |
| Model Number | SL01 |
| Item Weight | 0.06 Kilograms |
| Compatible Mountings | FUJI, Nikon SONY CANON |
| Battery Average Life | 5 years |
| Flash Sync Speed | 1/250 |
| Connectivity Technology | Wired |
| Number of Batteries | 1 AAA batteries required. |
| Wireless Technology | Optical Pulse |
| Mount Type | Hot Shoe Mount |
| Color Temperature | 6500 Kelvin |
| Compatible Devices | Sony: A7IV, A7R5, ZV-E10, ZV-1, A6400, A7III, A7RIV, A7RIII, A9, A7RII/V4.0, A7R, RX10. Canon: EOSR5, R, 5D, 90D, EOSRP, 5DIII, 5DIV, 70D, 80D, 1DX, 850D, 760D, 5DII, 7DII, 6DII, 6D, 800D, 90D, 600D, 7D, M6, M5, M3, 600D. Nikon: Z8, ZFC, D780, D800, D5, D4, D500, D610, D750, D700, D300S, D3300, D3100, D5300, D5200, D5000, 27II, 26, D200, D60, D5100, D7500, D7100. Fuji: X-T5, X-T4, GFX50S, X-T30, X-Pro2, X-T20, X-T2, X-T1, GFX50R, X-T3, X-Pro1, X-T10, X-E1, X-M5. Panasonic: S1R, GH5, GH4, LX100, GF1, G85, GX85, FZ2500GX, G7. Leica: SL2, Q2, M10, TYP601, CL, SL2. Olympus: E-M1, PRN-F, E-M10II/10III, E-PL8, E-P5, E-M5I. |
| Audio Recording | No |
| Minimum Shutter Speed | 1/200 |
| Maximum Shutter Speed | 1/200 |
| Shooting Modes | Manual Mode |
| Exposure Control Type | Manual |
| Water Resistance Level | Not Water Resistant |
| Viewfinder Type | LCD screen |
| Camera Flash | external |
| Built-In Media | SL01/SL02 |
| Unit Count | 1.0 Count |
| Manufacturer Part Number | SL01 |
Available variants
Size
- SL02-Mini Flash with Light
- SL01-Mini Flash Speedlite
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