Details
High power with Guide Number 24, wide 100 degrees circular beam angle
light distribution even without a diffuser
INON "Z-240" produces powerful guide number 24(*1) and "circular 100 degrees"(*2)coverage without a diffuser thanks to INON unique "T-shape Twin Flash" construction 
and optimally designed reflecting mirror / prism supporting effective light distribution even with 4 AA battery operation. This circular light distribution supports your creative and free strobe positioning with strobe arm(s) without vignetting of flash light.
(*1) Measurement in Air/ ISO100/m, Nominal value
(*2) 100 degrees circular beam angle without diffuser. 110 degrees circular beam angle with supplied -0.5/-1.5 diffuser
Advantage of powerful flash output when using
high-speed X synch camera
The Z-240 emits strong flash in very short period of time which solves conventional high power strobe's weak point and no power loss will happen even in fast shutter speed. In fast shutter speed, its effective power output increases at more than "approx. 30%" which is "approx. 60%" (when shutter speed is 1/250 sec.) and "approx. 90%" (1/500 sec.) comparing to Z-220 strobe.
The Z-240 supplies enough power for digital / film SLR shooters in particular shooting situation using fast shutter speed and smaller aperture setting.
Minimum recycle time of 1.6 seconds, compact body
Compact body size of the Z-240 is 99mm (outer diameter) / 100mm(depth) / 122mm(height) (*3) but its recycle time is minimum "approx. 1.6 sec." at full flash(*4). The Z-240 unique circuit components carries two sets of fundamental electrical parts (transformer: 2pcs, transistor: 4pcs) to achieve fastest recycle time in the class .
(*3) Excluding protruded parts.
(*4) With SANYO Twiicell 2700 Series, HR-3UTG, 1.2V, Min.2,500mAh. Recycle Time / Flash Capacity based on INON test data. Actual values may vary based on battery manufacturer, battery type and age.
Optical / electrical connection compatible,
Carrying all well-established features of "D-2000"series
As a prosumer model, the "Z-240" is equipped with Nikonos 5 pin sync connector to connect to a conventional camera system with "electrical cable" as well as "Optical D Cable connection" compatible connecting to digital camera's built-in flash to benefit all advanced features of "D-2000" series including ["S-TTL" Auto]
mode (*5)for TTL auto shooting with "Clear Photo System"
compatibility. Off course you can plug use the "Z-240" to compact digital camera (transparent housing) via "Optical D Cable" for fully automatic shooting with its "S-TTL" auto mode. The highly accurate S-TTL Auto shooting accommodates with Nikon D700 / D300 /D200 / D90 / D80 which emits either single or double pre-flash. The "Z-240" supports a number of different equipment combination including upgrading your system.
(*5) Usable function may vary depending on camera system and connection method
Next generation wireless TTL
The Z-240 "Type4" successfully amplifies receiving optical signal from the slave sensor 20 times more comparing to previous Z-240 "Type3" to provide [wireless S-TTL Auto mode] without using an optical cable. With optional "Wireless Connection Kit" [Z-240 "Type4"] supports 2 way (wired/wireless) S-TTL Auto mode.
13 step Manual / 24 step External Auto
The Z-240 supports professional needs for sophisticated lighting by its 13 step[Manual mode] with 1/2 EV increments and by 24 step [External Auto] mode with 1/4EV increments which is available for digital SLR camera under electrical cable connection. The Z-240 gives you free and creative lighting.
INON unique"Advanced Cancel Circuit" benefits you with shorter recycle time (1/3) and 20% more images per battery set comparing to an external strobe carrying conventional cancel circuit (*6).
(*6) Recycle time and available number of images per battery set varies depending on camera model and setting.
High-intensity 180 lumen power LED multifunctional
Focus Light with shutter linked auto OFF function
Multifunctional Focus Light for strobe aiming and supporting focusing as well as indicator of strobe charge status making it work in synch with strobe's ready LED lamp. The Z-240 "Type 4" uses high-intensity 180 lumen power LED as Focus Light. The unparalleled brightness of the Focus Light is also usable as an independent diving light producing 180 lumen / 20 degrees coverage.
The Focus Light is automatically turns OFF in synch with shutter release. The Focus Light starts to stop emitting light at the time of "pre-flash" under "Optical D Cable Connection" with a pre-flash type digital camera, so it never recorded in an image(*7).
(*7)Focus Light may be recorded on an image depending on camera system, connection method and shooting condition.
| Model | INON Z-240 Type4 |
| Strobe Control Mode (*1) | S-TTL Auto / External Auto / Manual / TTL Auto / Manual + TTL Auto (*10) |
| Connection (*1) | Wireless connection / Optical D Cable / Optical Cable / Optical D Slave Cable / Electrical Cable (*11) |
| Guide Number (*2) | 24 [without a diffuser] 21 [with supplied -0.5 White Diffuser] 14 [with supplied -1.5 White Diffuser] |
| Settable Flash Output (*2) | 24(FULL) 21(-0.5) 17(-1) 14(-1.5) 12(-2) 10(-2.5) 8.5(-3) 7.1(-3.5) 6.0(-4) 5.0(-4.5) 4.2(-5) 3.6(-5.5) 3.0(-6) (13 steps in 1/2EV increments) |
| Settable Aperture Value (*3) | F1.4+1/2EV. - F11 (1/2EV.increments, 12steps) F1.4+1/2EV. - F11+1/4EV. (1/4EV.increments, 24steps) |
| Focus Light (LED) Intensity | 180lm (*4) |
| Beam Angle | 100° x 100°circular beam [without a diffuser] 110° x 110°circular beam [with a diffuser] 20° [Focus Light (LED)] |
| Color Temp. | 5500K [flash light, without a diffuser] 5400K [flash light, with supplied diffuser] Approx.6000K [Focus Light (LED)] |
| Recycle Time (*5) (*7) |
Approx. 1.7 seconds minimum : ["eneloop" batteries (*8)] Approx. 1.6 seconds minimum : [NiMH batteries (*9)] Approx. 2.3 seconds minimum : [Alkaline batteries] Approx. 2.5 seconds minimum : [Lithium 1.5V batteries] |
| Flash Capacity (*5) (*7) |
Approx. 240 flashes : ["eneloop" batteries (*8)] Approx. 320 flashes : [NiMH batteries (*9)] Approx. 220 flashes : [Alkaline batteries] Approx. 380 flashes : [Lithium 1.5V batteries] |
| Focus Light (LED) Operable Duration (*6) (*7) |
Approx. 2hrs 20 min : ["eneloop" batteries (*8)] Approx. 2hrs 50 min : [NiMH batteries (*9)] Approx. 2hrs 00 min : [Alkaline batteries] Approx. 4hrs 00 min : [Lithium (1.5V) batteries] |
| Compatible Batteries | AA "eneloop" (HR-3UTG) x 4, or "new generation"NiMH batteries x 4 (*8) AA NiMH x 4 [good quality] (*9) AA Alkaline x 4 AA Lithium (1.5V) x 4 (Manganese batteries not compatible) |
| Focus Light Mode | [Single mode] Shutter linked auto OFF (manually turns ON / turns OFF upon shutter release) [Continuous mode] Shutter linked auto OFF (manually turns ON / turns OFF upon shutter release / automatically turns ON after approx. 0.5 second) |
| Dimensions | Diameter: 99mm/3.9in. Height: 122mm/4.8in. Depth: 100mm/3.9in. (*Not including Slave Sensor and Arm Base) |
| Weight | [air] 583g/20.5oz (without batteries) [underwater] Approx. 77g/2.7oz (with 4 "eneloop" batteries) |
| Working Temperature | 0°C - 30°C / 32°F - 86°F [water temperature] |
| Storage Temperature | 0°C - 30°C / 32°F - 86°F [air temperature] +50°C/122°F (temporary allowable temperature limit) |
| Depth Rating | 100m / 328ft |
| Body Material / color | Polycarbonate resin / gray |
| Package contents | Synch Connector Cap, Slave Sensor Cap, -0.5 White Diffuser (TTL/Manual), -1.5 White Diffuser (TTL/Manual), Light Filter Red, Light Filter Sticker Red, AC Circuit Switch sticker, Electrical Connection TTL Sticker, Spare O-ring (Battery Box, Synch Connector), INON Grease, TTL Insulation Plate x 2 |
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