The ULANZI SL03 is a compact rechargeable option for single contact hot shoe cameras that need a simple manual flash. The PHOTOOLEX FK300 adds wireless S1/S2 modes and higher output for off camera work. The GODOX iT32 pairs TTL with a trigger for Sony shooters who want flexible on- and off camera control. The VOKING VK750II serves Nikon DSLR owners with TTL and a rotating head. The Canon EL 10 targets EOS R mirrorless users who want advanced communication. The Insta360 Ace Pro 2 is not a flash but an action camera bundle, so it fits a different buyer entirely.
ULANZI SL03 Mini Flash
Best for: Single contact hot shoe cameras needing a small manual fill flash
- GN8 output with four brightness levels from 1/1 to 1/8 for close up shots.
- 90 degree tilt head lets you bounce light off walls or ceilings indoors.
- Built in 250mAh battery charges via USB-C in about one hour.
Keep in mind: No TTL function, so exposure is manual on every shot.
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PHOTOOLEX FK300 Speedlite
Best for: Manual off camera setups that need wireless S1/S2 triggering
- GN33 output reaches farther than entry level mini flashes.
- Eight power levels from 1/128 to 1/1 for fine control.
- Includes a flash stand and 12 color filters for creative effects.
Keep in mind: Manual only, so you set exposure without TTL assistance.
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GODOX iT32 TTL Flash with X5S Trigger
Best for: Sony mirrorless shooters who want TTL and wireless trigger in one
- TTL flash with X5S trigger for on camera and off camera use.
- Magnetic hotshoe and trigger attach or detach quickly.
- Built in 2.4GHz receiver syncs multiple Godox flashes without pairing.
Keep in mind: Listing lists Sony compatibility, so other camera systems need the right X5 version.
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VOKING VK750II TTL Flash
Best for: Nikon DSLR owners who want TTL and a swivel head
- TTL, Manual, Multi, S1, and S2 modes for different lighting needs.
- Head rotates 0 to 270 degrees horizontally and tilts 0 to 90 degrees.
- Includes FEC, AEB, manual zoom, auto zoom, and a PC port.
Keep in mind: Listing focuses on Nikon F DSLR cameras, so confirm your body is covered.
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Canon Speedlite EL 10
Best for: EOS R mirrorless owners who want advanced flash communication
- Controls up to 15 additional compatible Speedlite units.
- Head tilts 90 degrees and swivels 150 degrees left or 180 degrees right.
- Custom Flash modes switch between E TTL auto and manual settings.
Keep in mind: Compatible with select EOS R series mirrorless cameras, so verify your model.
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Insta360 Ace Pro 2 Flash Print Bundle
Best for: Action camera users who want a grip, zoom, and pocket printer
- Includes Xplorer Grip Pro Kit with 1 to 2x lossless zoom control.
- Pocket printer connects via Bluetooth to print photos from the camera.
- Camera has a 1/1.3 inch sensor and Leica SUMMARIT lens for 50MP photos.
Keep in mind: Not a flash unit, so it cannot light a scene or mount on a hot shoe.
Check price on Amazon ↗Product names and images come from the Amazon listings and are rechecked against them (last checked Nov 8, 2026). The highlights restate each listing's own bullet points as published on Nov 8, 2026. Prices change often, so we do not show them. These are affiliate links: as an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Mount and Compatibility
The first check is whether the flash fits your camera's hot shoe. The ULANZI SL03 uses a single contact universal hot shoe and lists specific compatible models from Sony, Canon, Nikon, Fuji, Panasonic, Leica, Pentax, and Olympus. It also names several incompatible cameras, including the Sony ZV 1F and Canon R50, so the listing is explicit about limits.
The PHOTOOLEX FK300 also uses a universal single contact hot shoe for Canon, Nikon, Sony, Fujifilm, Olympus, Panasonic, Pentax, and Leica. The VOKING VK750II is built for Nikon F DSLR cameras and names many bodies from the D3000 to D850 series. The GODOX iT32 is listed for Sony mirrorless and DSLR cameras, with the X5S trigger's magnetic hotshoe allowing changes between camera systems by swapping the X5 version.
The Canon EL 10 uses a multifunction shoe and is compatible with select EOS R series mirrorless cameras. The Insta360 Ace Pro 2 does not have a hot shoe mount for a flash; it is an action camera bundle with a grip and printer, so it serves a different purpose entirely.
Flash Control: TTL or Manual
TTL flash reads the exposure through the lens and adjusts output automatically. The VOKING VK750II offers TTL, Manual, Multi, S1, and S2 modes for Nikon DSLR users. The GODOX iT32 provides TTL for Sony cameras and adds wireless trigger control through the X5S. The Canon EL 10 includes E TTL auto flash and Custom Flash modes to switch between registered settings.
Manual flash puts output control entirely in your hands. The ULANZI SL03 has four brightness levels from 1/1 to 1/8 and no TTL function, which the listing states clearly. The PHOTOOLEX FK300 is manual only, with eight power levels from 1/128 to 1/1 and S1/S2 wireless trigger modes for off camera use.
The Insta360 Ace Pro 2 has no flash control modes because it is not a flash. Its camera features include built in Leica color profiles and Active HDR, but no hot shoe flash output.
Output and Recycling
Guide number indicates flash reach. The PHOTOOLEX FK300 has the highest listed GN at 33, which the listing says outperforms entry level mini flashes for indoor portraits and events. The ULANZI SL03 has a GN8 at ISO100, suitable for close up shots and fill light. The other flash listings do not state a guide number.
The ULANZI SL03 lists at least 500 full power flashes from its built in 250mAh battery and supports charging while in use via USB-C. The PHOTOOLEX FK300 does not state battery type or recycle time in its listing. The VOKING VK750II mentions fast recycle time without a specific number.
The GODOX iT32 does not list a guide number or battery capacity, but its screen shows battery level and charging status. The Canon EL 10 does not list output or battery details. The Insta360 Ace Pro 2's Xplorer Grip Pro Kit includes a built in 2010mAh battery that extends shooting time, but that powers the camera and grip, not a flash.
Head Movement and Light Shaping
Bounce flash softens shadows by aiming light at a surface. The ULANZI SL03 tilts 90 degrees, and the listing notes the reflection effect works indoors with white walls or ceilings, not outdoors or in large spaces. The VOKING VK750II rotates horizontally 0 to 270 degrees and tilts 0 to 90 degrees for more bounce positions.
The Canon EL 10 head tilts 90 degrees straight up and swivels 150 degrees left and 180 degrees right. The PHOTOOLEX FK300 does not list head movement, but it includes 12 color filters for creative effects. The GODOX iT32 has a flexible head and built in reflector/diffuser, according to its listing.
The Insta360 Ace Pro 2 does not have a flash head. Its Xplorer Grip Pro Kit provides 1 to 2x lossless zoom and exposure control for the camera, not light shaping.
Stated Specs at a Glance
The table below compares only the attributes each listing actually states. Where a listing does not provide a spec, the cell says Not listed. Use this to narrow down which flash matches your camera and shooting style.
| Flash | Guide Number | TTL | Modes | Head Movement | Battery | Wireless |
|---|---|---|---|---|---|---|
| ULANZI SL03 | GN8 | No | 4 power levels | 90° tilt | 250mAh, USB-C | Not listed |
| PHOTOOLEX FK300 | GN33 | No | Manual, S1, S2 | Not listed | Not listed | S1/S2 optical |
| GODOX iT32 | Not listed | Yes | TTL, Manual via trigger | Flexible head | Not listed | 2.4GHz |
| VOKING VK750II | Not listed | Yes | TTL, M, Multi, S1, S2 | 0 to 270° swivel, 0 to 90° tilt | Not listed | S1/S2 optical |
| Canon EL 10 | Not listed | Yes (E TTL) | E TTL, Manual, Custom | 90° tilt, 150° left, 180° right | Not listed | Controls up to 15 units |
| Insta360 Ace Pro 2 | Not listed | No | Not applicable | Not applicable | 2010mAh grip | Bluetooth printer |
Who Should Skip These Picks
If your camera has an incompatible hot shoe or is not on a listing's compatibility list, none of these flashes will work. For example, the ULANZI SL03 explicitly excludes several Sony and Canon models, and the Canon EL 10 requires a multifunction shoe on select EOS R bodies. Check your camera's mount before buying.
Studio photographers who need high output and fast recycling may find the PHOTOOLEX FK300's GN33 still limiting compared to larger studio strobes. The ULANZI SL03 is a mini flash with GN8, so it is not built for large spaces or outdoor bounce.
The Insta360 Ace Pro 2 is not a flash, so anyone looking for hot shoe lighting should skip it entirely. If you need an action camera bundle, it fits, but it will not light a scene.
What to Confirm on a Listing
Before buying, confirm the flash's mount type matches your camera. The ULANZI SL03 listing warns it is exclusively compatible with single contact hot shoes and lists incompatible models. The GODOX iT32 is listed for Sony, but the X5 trigger's interchangeable hotshoe means you need the correct version for your camera brand.
Check whether the flash offers TTL if you want automatic exposure. The PHOTOOLEX FK300 is manual only, while the VOKING VK750II and Canon EL 10 include TTL for their respective systems. The ULANZI SL03 has no TTL, so you must set power manually.
Look for stated output and battery details. The PHOTOOLEX FK300 lists GN33, while the ULANZI SL03 lists GN8 and battery capacity. Many listings, including the Canon EL 10 and GODOX iT32, do not state a guide number, so you may need to check the manufacturer's site if output matters to you.
For off camera work, verify wireless capabilities. The GODOX iT32 has a built in 2.4GHz receiver, the PHOTOOLEX FK300 and VOKING VK750II support S1/S2 optical triggering, and the Canon EL 10 can control up to 15 compatible units. The ULANZI SL03 does not list wireless.
Flash Choices, Answered
What is the difference between TTL and manual flash?
TTL flash automatically sets output based on the camera's metering, so it adjusts to changing light. Manual flash requires you to set the power level yourself, which gives consistent results but takes more work. Some flashes, like the VOKING VK750II, offer both.
How do I know if a flash fits my camera?
Check the flash's listing for your camera brand and model. Single contact hot shoes work across many brands, but some cameras have proprietary multifunction shoes. The Canon EL 10, for example, only fits select EOS R mirrorless cameras.
Can I use one flash off camera?
Yes, if the flash supports wireless triggering. The PHOTOOLEX FK300 has S1/S2 optical modes, the GODOX iT32 uses 2.4GHz with its X5 trigger, and the Canon EL 10 can control multiple units. A flash without wireless can still be used on a cable or remote trigger if compatible.
Which Flash Should You Buy?
A Sony mirrorless shooter who wants automatic exposure and the option to move the flash off camera should get the GODOX iT32 with X5S Trigger. Its TTL and magnetic trigger cover on- and off camera use without pairing hassles. For a Nikon DSLR owner who wants a traditional speedlite with a swivel head and TTL, the VOKING VK750II is the better fit. If you need a simple, pocketable manual flash for a single contact hot shoe camera, the ULANZI SL03 costs less and charges over USB-C.
How to read this guide. These picks were chosen by comparing the listing details for mount type, TTL or manual control, guide number, head movement, and wireless features, with a spread of designs from mini flashes to full speedlites and one action camera bundle. The comparison uses listing text only; units were not handled or used, so fit and performance on your specific camera remain to be confirmed from the listing.