Best Underwater Strobes for Compact Cameras 2026: TG-6, TG-7, RX100

For TG-6, TG-7 and Sony RX100, choose lighting by subject distance, beam coverage, aperture and the housing’s optical-trigger path—not the camera badge alone. This guide compares S40, S80 and S80+, while keeping the rig practical for compact-camera travel.

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S80 or S80+: choose the beam for the way you shoot

Both S80 and S80+ deliver 80Ws. They share the same body but differ in internal flash tube and LEDs. The S80 uses a round/circular tube for broad coverage; the S80+ uses a straight tube and a more directed flash, allowing a snoot to capture light more efficiently. This is a beam-design advantage, not extra flash energy or TTL.

The KR-SN07 optical snoot fits both directly with no different adapter. Choose S80+ for snoot-focused macro or directed lighting; choose S80 for broader native coverage. The S80+ lists over-60° flash coverage, expanding to 100° with a diffuser. Compare flash coverage rather than confusing it with the video LED beam angle.

The video LEDs also differ: S80 lists 3000 lumens with a 100° video beam, while S80+ lists 3000 lumens with a 50° video beam. Both list 1.0-second full-power recycle and approximately 800 full-power flashes per charge. Video-light use shares battery capacity; flash-count ratings do not promise a number of complete dives.

Quick Answer: Which Strobe Do You Need?

All are manual strobes: S1/S2 optical triggering is not TTL exposure automation. Confirm your exact housing flash/LED trigger, fibre-optic connector and preflash behaviour. A camera name alone does not establish compatibility.

Strobe Comparison: S40 vs S80 vs S80+

Strobe Power for Compact Cameras: What Actually Matters

Close macro generally needs less illuminated area than a wet wide-angle foreground. Begin with positioning, short working distance and manual exposure control. More flash energy will not rescue a subject too far away through water or an incompatible wet-lens/port combination. Watt-seconds describe flash energy; they do not promise a particular photograph.

Kraken S40: The Macro Specialist

KR-S40 — US$359.00 — gives 40Ws manual flash in a compact 530g-land / 200g-underwater package. A single 4000mAh 21700 battery uses USB-C charging; the catalog lists approximately 500 full-power flashes per charge.

Perfect For

• Close macro stills, including a compact camera’s small-subject work
• Lower-weight rigs and carefully positioned single-strobe lighting
• Multiple lights for creative key, fill or backlight, after confirming independent triggering

Real-World Use and Limitations

At close subject distances, compact size and precise placement may matter more than maximum energy. Its straight flash tube and narrower coverage are suited to macro. It is not automatically unusable for every wider subject, but broad scenes are more demanding and need careful positioning.

The spot LED is a focus aid rather than a wide video flood. Current S40 catalog copy conflicts with attributes on recycle time and LED output; those numbers are deliberately not repeated here. Confirm them with Kraken if either is important to your purchase.

Macro Accessories

The KR-SN08 snoot is explicitly designed for S40. The 4500K diffuser is an optional warming accessory for it. Choose a snoot for a creative effect, not because all macro photography requires one. Do not use the S80’s KR-SN07 as an assumed universal snoot.

Honest assessment: Choose S40 when size, cost and macro stills matter most. Choose a model with an integrated video flood when you want short video clips too; there is no evidence that every S40 buyer must upgrade within a year.

Kraken S80: Broad-Coverage Mixed Shooting

KR-S80 — US$599.00 — supplies 80Ws manual flash, a circular flash tube, 1.0-second full-power recycle and approximately 800 full-power flashes. Two 4000mAh 21700 batteries charge via USB-C. Listed weight is 980g on land / 375g underwater.

Perfect For

• Mixed macro and wide-angle stills where broad native flash coverage is useful
• Short close-range video clips as part of a stills-first rig
• Photographers comfortable with manual exposure and optical-trigger checks

Real-World Use and Limitations

The 3000-lumen integrated video LED has a listed 100° beam and 50-minute full-output burn time. It can save carrying a separate light for some close-range clips, but 4K or 8K resolution does not determine required lumens. Subject distance, framing, ambient light, aperture and frame rate still matter; it is not guaranteed professional wide-angle video lighting.

Broad flash coverage is a useful alternative to the S80+’s directed beam. Its 1.0-second full-power recycle supports repeat shooting; choose power and placement to suit your subject.

Macro Accessories

KR-SN07 fits S80 directly and also fits S80+. The 4500K diffuser for S80 and KR-FB08 float for S80 are named S80 accessories. Do not infer S80+ diffuser/float compatibility solely from a shared body.

Honest assessment: Choose S80 for broad coverage and mixed stills/short-clip use. Choose S80+ when directed lighting and snoot efficiency are the priority. Neither is universally the better buy.

Kraken S80+: Directed Flash and Snoot-Focused Macro

KR-S80+ — US$599.00 — is an 80Ws manual strobe, not TTL and not more powerful in watt-seconds than S80. It uses the same body with a straight flash tube and different LEDs. The directed flash helps the KR-SN07 snoot gather light efficiently; the snoot fits directly, without another adapter.

Buy It For Directed and Snooted Macro

Listed flash coverage is over 60° or 100° with a diffuser. It has six flash settings from 2 to 80Ws, 1.0-second full-power recycle and approximately 800 full-power flashes. Its 3000-lumen video LED has a 50° beam—not the S80’s 100° video flood—and settings of 100%, 75%, 25%, 10% and off.

Two 4000mAh 21700 USB-C batteries are listed; weight is 960g on land / 355g underwater. Skip it if broader native flash/video coverage is your main need. Confirm any spare-cell or float/diffuser accessory not explicitly named for S80+ before ordering.

Specific Camera Recommendations

Olympus TG-6 / OM System TG-7

Start with S40 for close macro stills. Choose S80 when broad flash coverage and short video clips matter; choose S80+ for snoot-focused macro. Verify the housing’s fibre-optic attachment and camera flash mode, including preflash handling. A wet lens must match the exact housing port; no AOI/Weefine lens compatibility is implied by the strobe.

Sony RX100 VII

The same subject-based choices apply. S80 is a practical mixed-shooting option, S80+ is a directed macro alternative and S40 remains useful for close stills. Check the camera flash/housing optical path before buying. A 3000-lumen video LED is not guaranteed sufficient for every wide scene merely because the camera records 4K.

Complete Setup Planning: Components, Not Brittle Totals

Budget by component rather than relying on a fixed bundle total. Arms, clamps, fibre-optic plugs, housing trigger, buoyancy and number of strobes vary. Select exact options and check the cart before buying; taxes and location pricing are separate.

Budget Macro Setup: S40

Start with S40, a compatible optical trigger/cable path, secure arm or mount, and clamps matched to the chosen layout. Add KR-SN08 only if you want snooted lighting.

Creative Multi-Light Macro

Multiple S40s can provide key, fill and backlight, but each needs a reliable triggering path and safe positioning. Multiple lights are an option, not an assumed requirement or guaranteed exposure improvement.

Versatile Setup: S80 or Directed Setup: S80+

Choose S80 for broader native coverage or S80+ for directed/snooted work. Both include a ball mount and YS adapter according to their listings; confirm the selected package before duplicating hardware. The KR-SN07 is compatible with both.

Buoyancy and Batteries

Measure the whole rig’s in-water balance before choosing floats. KR-FB08 explicitly names S80; no S40 collar or S80+ float compatibility is assumed. For S40/S80, the dedicated high-drain 21700 strobe battery listing warns against standard-cell substitution. Confirm S80+ spares directly rather than extending the accessory’s compatibility list.

These are optical-triggering strobes; an electrical sync cord is not automatically a supported backup. Confirm the actual housing/trigger/cable combination before ordering.

Common Questions

S40, S80 or S80+ for macro—which should I buy?

Choose S40 for compact stills, S80 for broad mixed coverage and video clips, or S80+ for directed/snooted macro. Snoots are optional creative tools. All are manual; none adds TTL exposure control.

Can I add a second strobe later?

Yes, provided each strobe has a supported optical trigger path. A matched pair makes output and controls easier to manage. One strobe can create effective macro lighting; two can improve wide-angle coverage and shadow control, without eliminating every shadow.

Can I reuse strobes after changing cameras?

Potentially. Check the new camera/housing optical trigger, cable connectors, preflash settings and synchronization behaviour. A change in sensor size alone does not make existing strobes obsolete.

Will these work with my wet lens?

The strobe does not physically validate a wet lens. Check the lens/housing/port combination separately, then match flash coverage and positioning to its field of view. Broad coverage helps wider scenes; directed/snooted light is a different creative choice.

How long does the battery last?

The catalog lists approximately 500 full-power flashes for S40 and approximately 800 for S80/S80+. Video/focus-light use, battery condition and shooting pace affect the usable reserve. Do not turn a flash-count rating into a fixed number of dives.

Do I need a snoot for macro?

No. It is a creative spotlight accessory. KR-SN08 is named for S40; KR-SN07 fits S80 and S80+ directly. The S80+ beam helps the snoot capture light efficiently, but actual exposure depends on optics, aperture and working distance.

Can I mix strobe models?

Only with a supported trigger path for each. You will need to balance different output, beam patterns, colour temperature and recycle behaviour manually. Matched units are usually simpler, but not compulsory.

What accessories do I need?

A supported optical trigger/cable combination, secure mounts/arms/clamps and buoyancy matched to the whole rig. Do not assume electrical sync cords, universal snoots or generic batteries are compatible. Confirm any accessory not explicitly named for the exact strobe.

Are these suitable for professional 4K or 8K video?

S80 and S80+ have useful 3000-lumen continuous LEDs, with different 100° and 50° video beams. Whether that is enough depends on the scene and exposure—not resolution. S40 and S160 spot LEDs are focus aids. For demanding broad video, compare dedicated video lighting separately.

Browse Kraken strobes

Bottom Line: Which Should You Buy?

Choose S40 for compact close-macro stills; S80 for broad native coverage and mixed stills/clips; S80+ for directed flash and efficient snoot capture. A compact camera does not require the heaviest lighting system. Confirm the housing’s optical-trigger support and your exact battery/accessory choices before ordering. Good positioning, short working distance and manual exposure practice matter more than an unconditional upgrade recommendation.

Catalog review: September 2026. Prepared for editorial review; not published.