Inon Z-240
Manufacturer: Inon
Type: Strobe
Year introduced: 2006 (announced March)
Discontinued: Early 2017
Successor: Inon Z-330
Predecessor: Inon Z-220
Guide number: GN 24 (in air, ISO 100); GN 16 with diffuser (measured by Alex Mustard in 2017)
Beam angle: 100 degrees circular (without diffuser); 110 degrees with -0.5 diffuser
Color temperature: 5,500K native; 4,900K or 4,600K with optional color conversion filters
Weight: 670g (722g for the Retra Flash, by comparison)
Power: ~20% more powerful than the Z-220
Batteries: 4x AA NiMH (2,700mAh recommended); 320 full-power flashes per charge
Flash modes: S-TTL auto, 13-step manual (half-stop increments), 24-step external auto, Nikonos TTL
Sync: Optical slave sensor + Nikonos-type 5-pin electrical connector
Built-in features: LED aiming/focus light (not aligned with flash axis)
Production variants: Type 3, Type 4 (core design unchanged throughout)
Overview
The Inon Z-240 was arguably the most widely used compact strobe in underwater photography during its 11-year production run (2006-2017). Announced in March 2006 by Eric Cheng as Inon’s new flagship strobe, it succeeded the Z-220 with approximately 20% more power (GN 24 vs. the Z-220’s lower output), S-TTL auto exposure, 13-step manual power control in half-stop increments, 24-step external auto, and legacy Nikonos TTL for film camera compatibility. Its compact body, universal AA battery format, and 320 full-power dumps per charge made it the benchmark against which virtually every new strobe was compared for over a decade ([1]).
The Z-240 was displayed publicly at DEMA 2006 alongside Inon’s D-2000 strobe and the new X-2 SLR housing ([2]). By DEMA 2007, it was already established as one of Inon’s “popular strobe models” alongside the D-2000, D-2000s, and Z-22 ring strobe ([3]).
Alex Mustard’s standardized 2017 strobe comparison — the most rigorous comparative test published on Wetpixel — measured the Z-240 at GN 16 with diffuser, equivalent to the Ikelite DS-161, Sea & Sea YS-250, and Retra Flash, though with narrower beam coverage than all three. Mustard emphasized that guide numbers alone “can be very misleading because they simply tell us how bright the centre of the beam is” — the visual beam comparison showed the Z-240 had the narrowest beam coverage of the mid-tier strobes. The larger Seacam 150 (GN 22 with diffuser) and Subtronic 270 (GN 25 without diffuser) were a step above in both power and coverage ([4]).
Significance
- The benchmark strobe — from 2006 to 2017, virtually every new strobe announcement and review compared itself against the Z-240. The Retra Flash was explicitly described as “a straightforward performance upgrade for photographers currently shooting INON Z240” ([5]). Third-party TTL converters from UW Technics and TRT-Electronics listed Z-240 compatibility as a primary feature ([6], [7]).
- 11-year production run with minimal changes — a testament to the design’s success. Multiple “Type” revisions (Type 3, Type 4) were produced but the core design remained unchanged ([8]).
- Compact and travel-friendly — at 670g with universal AA batteries, the Z-240 was prized by traveling photographers. Mustard noted its compact size “aids strobe positioning for shots where the strobes need to be tucked in close to the lens” ([9]).
- Extensive ecosystem — compatible with Inon’s own accessories, the Retra LSD optical snoot (available in Z-240 mount from 2012), ReefNet fiber optic snoots, the Retra PLE module, color conversion filters, EZKnobs cold-water extensions, and fiber optic cables from multiple manufacturers ([10], [11], [12], [13]).
- S-TTL and optical compatibility — the Z-240’s optical S-TTL worked with virtually every camera housing that had fiber optic sync ports, including Olympus PT-series housings, Nauticam housings, and Inon’s own X-2 housing. It also supported electrical sync via its 5-pin Nikonos connector ([14], [15]).
- The industry standard comparison point — even for strobes outside its class. When a commenter asked Stephen Frink about the Seacam 150 in 2008: “Are they significantly more powerful than say Inon Z240F?” — the Z-240 was the natural baseline ([16]).
Technical Specifications
| Feature | Specification |
|---|---|
| Guide Number | GN 24 (air, ISO 100) |
| Measured GN (with diffuser) | GN 16 (Mustard 2017 test) |
| Beam angle | 100 degrees circular (native); 110 degrees with -0.5 diffuser |
| Flash modes | S-TTL, Manual (13 steps, 0.5 EV increments), External Auto (24 steps), Nikonos TTL |
| Color temperature | 5,500K native |
| Batteries | 4x AA NiMH |
| Full-power flashes | ~320 (2,700mAh batteries) |
| Weight | 670g |
| Sync options | Optical slave sensor; 5-pin Nikonos electrical connector |
| Focus light | Built-in LED (not aligned with flash axis — addressed in Z-330 successor) |
| Power (energy) | Less than 100 W/s (Retra Flash at 100 W/s was “a bit more” powerful) |
Accessories
The Z-240 developed a rich accessory ecosystem over its long production life:
Inon Official Accessories
- Color Temperature Conversion Filters (2012): Available in 4,900K and 4,600K versions, with optional -0.5 EV diffusion. Designed to warm the strobe’s 5,500K output for richer blue backgrounds in wide-angle photography. Also available for the Z-220 and D-2000 series ([17]).
- Diffusers: Standard diffuser widened beam to 110 degrees with -0.5 EV power loss.
- Snoot Set: While Inon initially produced snoots only for the smaller S-2000, the Z-240’s mount was not directly supported by Inon’s own snoot kits. Community members improvised with rubber rings and plumbing supplies ([18]). The Z-330 successor later received an official snoot set in February 2019 ([19]).
Third-Party Accessories
- Retra LSD (Light Shaping Device): An optical snoot using precision-coated lenses to focus the Z-240’s output into a collimated beam. First reviewed in September 2011 by Borut Furlan on both Seacam 150 and Z-240 strobes ([20]). Available commercially from March 2012 in both Pro (EUR 599) and Prime (EUR 349) versions. Used by Alex Mustard and Borut Furlan extensively — Mustard shot his signature wobbegong shark eye image in Raja Ampat with a single Z-240 and LSD Prime ([21], [22]).
- Retra PLE (Pilot Light Enhancement) Module: An add-on specifically designed for the Z-240 that straightened the built-in aiming light beam for better LSD alignment, at the cost of one stop of strobe power. Available from 2012 at EUR 48 ([23]).
- ReefNet Fiber Optic Snoot: Announced in November 2010 with planned Z-240 compatibility, featuring 150 x 0.75mm polished fibers ([24]).
- EZKnobs: CNC-machined aluminum extension knobs designed for the Z-240/D-2000, launched on Kickstarter in 2017 for cold-water photographers needing larger controls with thick gloves. Priced at $40/pair ([25]).
- Triggerfish Remote Slave Trigger: Optical slave trigger tested with Z-240 strobes by Adam Hanlon, providing reliable remote triggering at distances up to 15 meters via Nikonos 5-pin cable ([26]).
- Xit 404 Quad Ball Adaptor: Ball adaptor system used with Z-240 strobes, reviewed in May 2011 ([27]).
TTL Converter Compatibility
The Z-240 was supported by all major third-party TTL converters:
- UW Technics TTL Converter for Canon (2017): Full eTTL control with Nauticam housings. Also available in versions for Nikon D600-D810, D4-D5, D500, Sony A7 series, Sony A6000 series, and Panasonic GH5 — all listing Z-240 compatibility ([28]).
- TRT-Electronics Turtle (2016): Tested with Z-240 Types 3 and 4 for both electrical and optical triggering, compatible with Canon and Nikon DSLRs. Compatible with “Nikon D2X, D3, D4” through to “D500” and Canon cameras ([29]).
- TRT-Electronics o-Turtle (2017): TTL trigger for Olympus mirrorless cameras, tested with Z-240 ([30]).
- Nauticam TTL Converter for Nikon (2017): Compatible with Z-240 strobes for Nikon D5/D500/D850/Z7/Z50 in Nauticam housings ([31]).
Reviews & Discussion
Professional Reviews
- D7000 Housing Review (2012): Adam Hanlon used Z-240 strobes supplied by Inon Japan for the comprehensive D7000 housing comparison across Nauticam, Ikelite, Aquatica, and Sea & Sea housings, noting them as “excellent” ([32]).
- Canon 5D Mark II Housing Shootout (2010): Drew Wong used a pair of Z-240s for macro photography during the multi-housing comparison ([33]).
- Nikon D3 Field Review (2008): Mustard used twin Z-240 strobes throughout the three-part review across British Columbia, California, and Guadalupe Island — with both macro and wide-angle lenses on a Subal ND3 housing. His technical notes specified: “Nikon D3 + 15mm FE, Subal housing. F13 @ 1/25th. ISO 800. Two Inon Z240 strobes” ([34], [35], [36]).
- Nikon D7100/Subal Review (2013): Mustard shot the entire Bali review with twin Z-240 strobes on a Subal ND7100, producing images across macro and wide-angle genres ([37]).
- Nikon D500 Field Review (2016): Adam Hanlon borrowed Z-240 strobes from Chris Boardman and Nick More for the month-long review across Raja Ampat and Lembeh. Used alongside Sea & Sea YS-D2 strobes for comparison ([38]).
- Canon G7X Review (2015): Alex Tattersall used twin Z-240 strobes with the compact Canon G7X, noting the camera/strobe combination with the CMC macro converter produced shots at “F11, 1/320 ISO 200, 2x INON Z240” ([39]).
- Nikon D700/Subal Review (2008): Used in the review setup, with the D700 in Subal ND700 housing ([40]).
- Spider Crab Aggregation (2010): Adam Hanlon documented the famous spider crab aggregation in England using “Nikon D700 + Sigma 15mm fisheye lens. Subal housing, Zen 230 dome. 2x Inon Z240 strobes on 5.6 power. Ultralight arms. Settings: 1/160th @ f/14. ISO 640” ([41]).
Comparative Tests
-
Retra Flash Preview (2017): Mustard’s standardized comparison tested the Z-240 against Retra Flash, Sea & Sea YS-250, Ikelite DS-161, Sea & Sea D1, Seacam 150, and Subtronic 270 — all with manufacturer diffusers. All measured guide numbers:
- Inon Z-240 with diffuser: GN 16
- Retra Flash with diffuser: GN 16
- Sea & Sea YS-250 with diffuser: GN 16
- Ikelite DS-161 with diffuser: GN 16
- Sea & Sea D1 with diffuser: GN 18
- Seacam 150 with diffuser: GN 22
- Subtronic 270 no diffuser: GN 25
- Seacam 150 no diffuser: GN 25
Despite equal guide numbers, the Retra produced “a much wider spread of light than the Z240 in particular.” The Z-240 had the narrowest beam coverage of the mid-tier strobes ([42]).
-
Retra Flash Field Review (2017): Multiple photographers compared Retra Flash to their Z-240s underwater. Josef Litt: “I used the Retra’s on half power, while I had to use the INONs on 11 or full to light a reef scene.” Robert Smits: “The recycle time of the strobe is a little bit better than the Z240.” Peter Berndt: “They were more powerful and had a faster recycling time than my INONs.” Valerie Reid used Z-240 knob extenders that were unnecessary with the Retra’s larger controls: “The strobes are easy to use and do not need use additional control knob extenders as my current INONs do” ([43]).
-
Retra TTL comparison: Retra conducted standardized TTL tests comparing their strobe’s S-TTL performance against the Z-240 and Sea & Sea D2, published in Mustard’s 2017 review ([44]).
Notable Users and Setups
- Adam Hanlon: Primary strobe for years — “Nikon D7000 + Nauticam housing, Nauticam 45 degree viewfinder, Inon Z240 strobes. Light and Motion Sola 600.” Also used D2Xs + Subal housing with Z-240s ([45]).
- Alex Mustard: Used alongside Subtronic Alpha strobes as part of dual-brand setup — “Nikon D700 + Subal housing, Subal 45 degree viewfinder, Zen 230 dome, Subtronic Alpha strobes, Inon Z240 strobes” ([46]).
- Amanda Cotton: Won awards shooting with “Nikon D7000 in a Seacam housing and lit by Inon Z240 strobes with CM diffusers” — including notable mako shark images ([47]).
- Christian Skauge: Norwegian championship winner, “using a Nikon D200 in a Nexus housing with two Inon Z-240 strobes” ([48]).
- Luca Tamagnini: Shot a notable octopus image with “Nikon D80 with 10.5mm fisheye in a Sea&Sea MDX-80 housing and two Inon Z-240 Inon strobes” at “1/125 at F9, ISO 250” ([49]).
Known Issues
- Flash tube burnout: Forum commenter Liz Rogers reported having “burnt out the flash tubes on my Inon Z240s a couple of times” from repeated full-power shooting in tropical waters ([50]).
- Aiming light misalignment: Josef Litt noted “I do not like the misaligned light on my INONs when using the LSD” — the built-in LED was not aligned with the flash tube axis. This was addressed in the Z-330’s redesigned fresnel-equipped focus light, which placed “the optical axis of the focus light in line with strobe light’s” using a fresnel lens ([51], [52]).
- Battery compartment flooding: Community members reported occasional battery compartment floods; one photographer lost their Z-240 to a battery compartment flood just before a Bali trip ([53]).
- Small control knobs: In cold water with thick gloves, the Z-240’s controls were difficult to operate, prompting aftermarket solutions like the EZKnobs Kickstarter and Valerie Reid’s use of “additional control knob extenders” ([54], [55]). The Z-330 successor addressed this with “enlarged” control dials “for use when diving in cold water and even when wearing thick gloves” ([56]).
Community Discussion
The Z-240 generated extensive community discussion throughout its production life and even after discontinuation:
- Combining Z-240 and Z-330 (2023, 8 replies): A photographer seeking a second strobe asked about pairing a Z-330 with a Z-240. Forum members advised against it for wide-angle work due to significant power differences, though one noted the Z-240 was the “precursor to the Z-330” and had been used extensively ([57]).
- Canon R5 with UW Technics and Z-240 (2023, 11 replies): A photographer transitioning from Canon 7D to R5 struggled with TTL settings using their existing Z-240 pair and new UW Technics converter. Community provided detailed troubleshooting guidance ([58]).
- “Inon’s tragedy; need advice” (2023, 7 replies): A longtime Inon user lost both a Z-220 and Z-240 to flooding in quick succession. Community immediately pointed to used Z-240s in the classifieds and recommended Retra as a new alternative — illustrating both the Z-240’s continued popularity on the secondhand market and Retra’s status as the spiritual successor ([59]).
- Z-240 Type 4 strobes for sale (2022, 7 replies): A long-time diver selling his Z-240 Type 4 strobes after 60 years of diving drew sympathetic responses from Alex Mustard, Tim G, and Paul Kay ([60]).
- Seacam 150 comparison (2008): A comment on Stephen Frink’s Seacam 150 forum post asked directly: “Are they significantly more powerful than say Inon Z240?” — illustrating the Z-240’s role as the baseline comparison point ([61]).
- Inon Z240 or Sea and Sea YS-D1: Direct buyer’s comparison thread between the two popular mid-range strobes ([62]).
- Strobe performance Z-240 vs YS-D2: Community comparison of beam coverage at 120 degrees between the YS-D2 and Z-240 ([63]).
- Sea&Sea MDX-D500 TTL with Z-240s: Technical discussion of TTL converter compatibility with Z-240 strobes in Sea&Sea housings ([64]).
Timeline
- 2006-03: Announced as Inon’s new flagship strobe by Eric Cheng on Wetpixel — GN 24, S-TTL, 13-step manual, 320 full-power flashes per charge ([65])
- 2006-11: Displayed at DEMA 2006 alongside the D-2000 and X-2 housing ([66])
- 2006-11: Inon X-2 housing for Canon 10D/20D/30D announced with S-TTL compatibility for Z-240 and D-2000 strobes ([67])
- 2007-07: Confirmed compatible with Olympus PT-E03 housing via fiber optic TTL ([68])
- 2007-11: Shown at DEMA 2007 as one of Inon’s established “popular strobe models” ([69])
- 2007-12: Christian Skauge wins Norwegian championship using twin Z-240s with Nikon D200 in Nexus housing ([70])
- 2008-09: Used by Alex Mustard for three-part Nikon D3 field review across British Columbia, California, and Mexico ([71])
- 2010-06: Drew Wong used Z-240 pair for Canon 5D Mark II housing shootout ([72])
- 2010-08: Adam Hanlon documents spider crab aggregation with twin Z-240s at 5.6 power ([73])
- 2010-11: ReefNet announced fiber optic snoot with Z-240 support ([74])
- 2011-03: Triggerfish remote slave trigger tested with Z-240 by Adam Hanlon ([75])
- 2011-09: Retra LSD optical snoot reviewed on Seacam 150 and Z-240 by Borut Furlan ([76])
- 2012-03: Retra releases commercial LSD with Z-240 mount option at EUR 599 ([77])
- 2012-06: Inon releases color temperature conversion filters (4,900K/4,600K) for Z-240, Z-220, and D-2000 series ([78])
- 2012-07: Adam Hanlon uses Z-240 strobes (supplied by Inon Japan) for comprehensive D7000 housing comparison ([79])
- 2012-10: Retra releases PLE module specifically for Z-240’s aiming light alignment with LSD ([80])
- 2013-02: Alex Mustard reviews Retra LSD Prime with Z-240 in Raja Ampat; shoots wobbegong shark eye image with single Z-240 and LSD Prime ([81])
- 2013-12: Mustard shoots Nikon D7100/Subal review in Bali with twin Z-240s ([82])
- 2015-04: Alex Tattersall uses twin Z-240s for Canon G7X compact camera review ([83])
- 2016-10: Adam Hanlon borrows Z-240s for month-long Nikon D500 review across Raja Ampat and Lembeh ([84])
- 2016-11: TRT-Electronics Turtle TTL trigger ships with Z-240 Types 3/4 support ([85])
- 2017 (early): Production ceased — “After Inon ceased production of the well known Z240 strobe earlier this year” ([86])
- 2017-02: Mustard’s standardized strobe comparison measures Z-240 at GN 16 with diffuser, alongside six other strobes ([87])
- 2017-08: UW Technics ships Canon TTL converter with Z-240 compatibility ([88])
- 2017-09: Retra Flash ships, explicitly positioned as Z-240 replacement — same batteries, same cables, similar size, aluminum body, 100 W/s ([89])
- 2017-09: EZKnobs Kickstarter launches with Z-240/D-2000 knob extensions at $40/pair ([90])
- 2017-11: Z-330 previewed as successor — same body, GN 33, 110 degree beam, redesigned focus light and enlarged controls. Battery compartment and control layout identical to Z-240. LED focus light at 220 lumen with fresnel lens ([91])
- 2017-12: Z-330 full specifications announced. Features built-in dome lens for 110 degree native coverage without diffuser, circular metal heat sink, shutter-linked auto-off focus light, phosphorescent back panel, bayonet-mount dome filters, and “duckbill” rotating light shade. Ships December 24 ([92])
- 2023: Z-240s still actively traded on Wetpixel classifieds and discussed in gear threads years after discontinuation ([93])
Legacy
The Z-240’s influence extends beyond its production years. Its physical design became the template for the Z-330 successor, which retained the identical battery compartment and control layout while adding substantially more power and features:
- 37% more power: GN 33 vs. GN 24
- Wider native coverage: 110 degrees without any diffuser (vs. 100 degrees), achieved through a built-in optically designed dome lens that diffuses light “thanks to the refraction ratios of air, acrylic and water” without power loss — unlike a translucent diffuser “which can widen coverage while but sacrifices power and stores heat internally”
- Heat management: Circular metal heat sink directly connected to circuit components, resolving “heat problems typically associated with powerful strobes”
- Aligned focus light: 220 lumen with fresnel lens placing the optical axis “in line with strobe light’s”
- Larger controls: Enlarged dials “for use when diving in cold water and even when wearing thick gloves”
- Phosphorescent back panel: White base high-intensity phosphorescent material for improved visibility
- Strobe Light Shade: Bundled “duckbill” rotating shade to prevent ghosting and flaring
- Bayonet-mount dome filters: Including Soft, ND (-4 EV), 4600K, and 4900K options
The Retra Flash was designed from the ground up as a Z-240 upgrade path — matching its AA battery format, cable compatibility (both optical and Sea & Sea electrical), and compact form factor while delivering wider, softer light and more power in an aluminum body. Retra’s founding philosophy grew directly from experience building the LSD optical snoot for the Z-240. General Manager Oskar Zupancic explained: “Making the LSD taught us lots about existing light sources and different qualities of light. As underwater photographers we felt we could bring something new to the strobe market with, although it sounds slightly funny, a strobe fully focused on quality of light” ([96]).
As of 2023, used Z-240s remained some of the most commonly listed items in the Wetpixel classifieds, with photographers either upgrading to Z-330s or Retra Flashes while others sought them out as affordable, proven performers ([97]).
Sources
- Wetpixel article, Mar 26, 2006: Inon Announces Flagship Z 240 Strobe ↩
- Wetpixel article, Nov 15, 2006: Dema 2006 Inon ↩
- Wetpixel article, Nov 1, 2007: Dema 2007 Inon America ↩
- Wetpixel article, Feb 1, 2017: Preview Retra Strobe By Alex Mustard ↩
- Wetpixel article, Sep 20, 2017: Field Review Retra Flash By Alex Mustard And Friends ↩
- Wetpixel article, Aug 30, 2017: Uw Technics Ships Ttl Converter For Canon ↩
- Wetpixel article, Nov 5, 2016: Rt Electronics Releases The Turtle Ttl Strobe Trigger ↩
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- Wetpixel article, Feb 1, 2017: Preview Retra Strobe By Alex Mustard ↩
- Wetpixel article, Mar 29, 2012: Retra Releases Light Shaping Device ↩
- Wetpixel article, Nov 1, 2010: Reefnet Plans To Release Fiber Optic Snoot ↩
- Wetpixel article, Oct 23, 2012: Retra Announces Pilot Light Enhancement Module ↩
- Wetpixel article, Sep 20, 2017: Kickstarter Launch Ezknobs For Underwater Strobes ↩
- Wetpixel article, Nov 7, 2006: Inon X 2 Housing For Canon 10d 20d 30d Preview ↩
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- Wetpixel article, Nov 17, 2008: From The Forums Frink On Seacam 150 ↩
- Wetpixel article, Jun 14, 2012: Inon Puts The Blue Back In ↩
- Wetpixel article, Jun 2, 2010: Inon Announces Snoots For S 2000 Strobes ↩
- Wetpixel article, Feb 17, 2019: Inon Ships Snoot Set For Z330 D200 ↩
- Wetpixel article, Sep 2, 2011: Review Light Shaping Device ↩
- Wetpixel article, Mar 29, 2012: Retra Releases Light Shaping Device ↩
- Wetpixel article, Feb 18, 2013: Field Review Retra Lsd Prime Snoot ↩
- Wetpixel article, Oct 23, 2012: Retra Announces Pilot Light Enhancement Module ↩
- Wetpixel article, Nov 1, 2010: Reefnet Plans To Release Fiber Optic Snoot ↩
- Wetpixel article, Sep 20, 2017: Kickstarter Launch Ezknobs For Underwater Strobes ↩
- Wetpixel article, Mar 11, 2011: Review Triggerfish Remote Slave Trigger ↩
- Wetpixel article, May 24, 2011: Review Xit 404 Quad Ball Adaptor ↩
- Wetpixel article, Aug 30, 2017: Uw Technics Ships Ttl Converter For Canon ↩
- Wetpixel article, Nov 5, 2016: Rt Electronics Releases The Turtle Ttl Strobe Trigger ↩
- Wetpixel article, Nov 6, 2017: Trt Electronics Ships The O Turtle Ttl Flash Trigger For Olympus ↩
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- Wetpixel article, Jul 18, 2012: Wetpixel D7000 Housing Review ↩
- Wetpixel article, Jun 12, 2010: Canon 5d Mark Ii Housing Shootout ↩
- Wetpixel article, Sep 16, 2008: Nikon D3 Field Review In The East Pacific Part 1 ↩
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- Wetpixel article, Sep 18, 2008: Nikon D3 Field Review In The East Pacific Part 3 ↩
- Wetpixel article, Dec 18, 2013: Field Review Nikon D7100 And Subal Nd7100 ↩
- Wetpixel article, Oct 26, 2016: Field Review Nikon D500 ↩
- Wetpixel article, Apr 12, 2015: Review Canon Powershot G7 X By Alex Tattersall ↩
- Wetpixel article, Nov 17, 2008: Review Nikon D700 In Subal Nd700 ↩
- Wetpixel article, Aug 19, 2010: Spider Crab Aggregation ↩
- Wetpixel article, Feb 1, 2017: Preview Retra Strobe By Alex Mustard ↩
- Wetpixel article, Sep 20, 2017: Field Review Retra Flash By Alex Mustard And Friends ↩
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- Wetpixel article, Jul 18, 2012: Wetpixel D7000 Housing Review ↩
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- Wetpixel article, Aug 30, 2013: Image Uk Blue Sharks ↩
- Wetpixel article, Dec 9, 2007: Christian Skauge Norweigian Champion Underwater ↩
- Wetpixel article, Jun 18, 2012: Unique Convict Blenny Schooling Behavior Captured ↩
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- Wetpixel article, Sep 16, 2008: Nikon D3 Field Review In The East Pacific Part 1 ↩
- Wetpixel article, Jun 12, 2010: Canon 5d Mark Ii Housing Shootout ↩
- Wetpixel article, Aug 19, 2010: Spider Crab Aggregation ↩
- Wetpixel article, Nov 1, 2010: Reefnet Plans To Release Fiber Optic Snoot ↩
- Wetpixel article, Mar 11, 2011: Review Triggerfish Remote Slave Trigger ↩
- Wetpixel article, Sep 2, 2011: Review Light Shaping Device ↩
- Wetpixel article, Mar 29, 2012: Retra Releases Light Shaping Device ↩
- Wetpixel article, Jun 14, 2012: Inon Puts The Blue Back In ↩
- Wetpixel article, Jul 18, 2012: Wetpixel D7000 Housing Review ↩
- Wetpixel article, Oct 23, 2012: Retra Announces Pilot Light Enhancement Module ↩
- Wetpixel article, Feb 18, 2013: Field Review Retra Lsd Prime Snoot ↩
- Wetpixel article, Dec 18, 2013: Field Review Nikon D7100 And Subal Nd7100 ↩
- Wetpixel article, Apr 12, 2015: Review Canon Powershot G7 X By Alex Tattersall ↩
- Wetpixel article, Oct 26, 2016: Field Review Nikon D500 ↩
- Wetpixel article, Nov 5, 2016: Rt Electronics Releases The Turtle Ttl Strobe Trigger ↩
- Wetpixel article, Nov 25, 2017: Sneak Preview Inon Z330 Strobe ↩
- Wetpixel article, Feb 1, 2017: Preview Retra Strobe By Alex Mustard ↩
- Wetpixel article, Aug 30, 2017: Uw Technics Ships Ttl Converter For Canon ↩
- Wetpixel article, Sep 20, 2017: Field Review Retra Flash By Alex Mustard And Friends ↩
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- Z-240 announcement (2006) (article) ↩
- DEMA 2006 Inon booth (article) ↩
- Inon X-2 housing preview — S-TTL compatibility (article) ↩
- Olympus E-410/PT-E03 — Z-240 TTL compatibility (article) ↩
- DEMA 2007 Inon America (article) ↩
- Christian Skauge Norwegian championship — twin Z-240s (article) ↩
- Nikon D3 field review Part 1 — twin Z-240s (article) ↩
- Nikon D3 field review Part 2 — macro with Z-240s (article) ↩
- Nikon D3 field review Part 3 — wide angle with Z-240s (article) ↩
- Seacam 150 discussion — Z-240 comparison (article) ↩
- Nikon D700/Subal review (article) ↩
- Canon 5D Mark II housing shootout — Z-240 for macro (article) ↩
- Spider Crab Aggregation — twin Z-240s (article) ↩
- ReefNet fiber optic snoot — Z-240 support (article) ↩
- Inon S-2000 snoots — Z-240 not supported (article) ↩
- Triggerfish remote slave trigger review — Z-240 tested (article) ↩
- Xit 404 Quad Ball review — used with Z-240s (article) ↩
- LSD optical snoot review — Z-240 tested (article) ↩
- Retra LSD commercial release — Z-240 mount (article) ↩
- Inon color temperature conversion filters for Z-240 (article) ↩
- Unique convict blenny — Z-240 strobes (article) ↩
- D7000 housing review — Z-240 strobes (article) ↩
- Retra PLE module for Z-240 (article) ↩
- Retra LSD Prime field review — Z-240 tested (article) ↩
- UK Blue Sharks — Z-240 by Amanda Cotton (article) ↩
- Nikon D7100/Subal review — twin Z-240s (article) ↩
- Canon G7X review — twin Z-240s (article) ↩
- Nikon D500 field review — borrowed Z-240s (article) ↩
- TRT-Electronics Turtle TTL trigger — Z-240 compatible (article) ↩
- Retra Flash preview — standardized strobe comparison (article) ↩
- UW Technics Canon TTL converter — Z-240 compatible (article) ↩
- EZKnobs Kickstarter — Z-240/D-2000 compatible (article) ↩
- Retra Flash field review — Z-240 comparisons (article) ↩
- o-Turtle TTL trigger — Z-240 compatible (article) ↩
- Z-330 sneak preview — Z-240 ceased production (article) ↩
- Z-330 full specifications — Z-240 comparison (article) ↩
- Inon Z-330/D-200 snoot set — successor ecosystem (article) ↩
- Forum: Combining Z-240 and Z-330 (forum) ↩
- Forum: Canon R5 UW Technics Z-240 (forum) ↩
- Forum: Inon’s tragedy (forum) ↩
- Forum: Z-240 Type 4 for sale (forum) ↩
- Forum: Inon Z240 or Sea and Sea YS-D1 (forum) ↩
- Forum: Z-240 vs YS-D2 beam performance (forum) ↩
- Forum: MDX-D500 TTL with Z-240s (forum) ↩