Accessories

Specifications

• Product: Z-240 Strobe Body, Sync Connector Cap, Slave Sensor Cap, -0.5 White Diffuser (TTL/Manual), -1.5 White Diffuser (TTL/Manual), Light Filter Blue, Light Filter Red, Light Filter Sticker Red, Advanced Cancel Circuit Switch sticker, Electrical Connection TTL sticker, Spare O-rings (Battery Box, Sync Connector), INON Grease, TTL Insulation Plate x 2.
• Strobe Control Modes: S-TTL Auto, External Auto, Manual, Nikonos TTL Auto(*1), Manual + TTL Auto (*2)
• Connection Methods: Optical D Cable, Optical Cable, Optical D Slave Cable, Electrical Cable (*3)
• Guide Number: (*4)
  • Air, ISO 100 x 1 meter: Full: 24, -0.5: 21, -1: 17, -1.5: 14, -2: 12, -2.5: 10, -3: 8.5, -3.5: 7.1, -4: 6.0, -4.5: 5.0, -5: 4.2, -5.5: 3.6, -6: 3.0. (13 steps in 1/2EV increments)
  • Air, ISO 100 x 1 foot: Full: 79, -0.5: 69, -1: 56, -1.5: 46, -2: 39, -2.5: 33, -3: 28, -3.5: 23, -4: 20, -4.5: 16, -5: 14, -5.5: 12, -6: 10. (13 steps in 1/2EV increments)
  • Settable Aperture Values:(*5)
    • f/1.4+1/2EV through f/11 (1/2EV increments)
    • f/1.4+1/4EV through f/11+1/4EV (1/4EV increments)
  • Beam Angle:
    • 100° x 100° (air) circular beam
  • Color Temp:
    • 5500K (at full output, without diffusers)
  • Batteries:(*6)
    • AA Alkaline, Nicad, Nickel Metal Hydride, Lithium, Oxyride x 4
      (*manganese batteries not compatible)
  • Recycle Time:(*7)(*8)
    • AA NiMH batteries: 1.6 seconds minimum (2,700mAh)
    • AA Nicad batteries: 1.5 seconds minimum (1,000mAh)
    • AA Alkaline batteries: 2.3 seconds minimum (1.5V)
    • AA Lithium batteries: 2.5 seconds minimum (1.5V)
    • AA Oxyride batteries: 2.1 seconds minimum (1.5V)
  • Flash Capacity:(*7)(*8)
    • AA NiMH batteries: approximately 320 flashes (2,700mAh)
    • AA Nicad batteries: approximately 120 flashes (1,000mAh)
    • AA Alkaline batteries: approximately 220 flashes (1.5V)
    • AA Lithium batteries: approximately 380 flashes (1.5V)
    • AA Oxyride batteries: approximately 250 flashes (1.5V)
  • Focus/Target Light: Half shutter press automatic ON, Shutter linked auto OFF with INON X Series SLR/DSLR housings or Optical Converter TTL and Optical Cable connections.
    Manual ON, shutter linked auto OFF when shutter opens for other configurations.
  • Depth Rating: 100m (330 feet)
  • Size: (not including slave sensor, arm mounting base)
    
    • Diameter: Approx. 99mm (3.9 inches)
    • Length: Approx. 100mm (3.9 inches)
    • Height: Approx. 122mm (4.8 inches)
      
  • Weight:
    • Air: 567gr (1 lb. 4.0 oz.) without batteries
    • U/W: Approx. 75gr (2.6 oz.) with 4 AA NiMH batteries
  • Body Material: Polycarbonate resin (gray)
    
    
  • Specifications subject to change without notice.
  • (*1) TTL only possible when used with Nikonos TTL compatible cameras / camera systems.
  • (*2) TTL only possible when used with Nikonos TTL compatible cameras / camera systems connected by electrical sync cable.
  • (*3) Sea & Sea Sync Cord N, product number 17100.
  • (*4) Measurement in Air, at ISO100 x 1 meter, and ISO100 x 1 foot.
  • (*5) At ISO100 equivalent film sensitivity.
  • (*6) Oxyride battery voltage is in excess of 1.7V and is fine for firing strobe. However when batteries are still fresh, and the Focus Light is turned on, the sudden high voltage will shorten the Focus Light bulb life. Refer to written cautions on battery packaging warning of shortened bulb life when using these batteries. To prevent shortened bulb life, do not use Focus Light until strobe has been fired at least 20 times at full power. This will reduce the voltage down to conventional battery levels.
  • (*7) Full strobe output at 30 second intervals with both Focus Light and Advanced Cancel Circuit OFF, at 25C (77F) degrees.
    Tested with following batteries:
    • Nickel Metal Hydride: SANYO Twicell 2700 Series, HR-3UG, 1.2V, 2,700mAh
    • Nicad: GP 100AAKC, KR6, 1.2V, 1,000mAh
    • Alkaline: Maxcell ALKALINE ACE, LR6(K), 1.5V
    • Lithium 1.5V: FUJIFULM/Energizer LITHIUM, FR6, 1.5V
    • Oxyride: Panasonic Oxyride, ZR6Y, 1.5V
  • (*8) Recycle Time / Flash Capacity based on Inon test data. Actual values may vary based on battery manufacturer, battery type and age.

Item Includes

• Z-240 Strobe
• Instruction Manual
• Battery Cap
• AA Batteries
• Diffuser
• O-Ring Grease

Product Features

• High Power - Powerful 24 Guide Number (ISO 100, Air x 1 meter; GN=79/feet) for DSLR users shooting small apertures in macro, or lighting reefscapes with fullframe fisheye lenses. Latest technologies harnessed to make internal components with even higher power in the same lightweight, compact package as its predecessor, the Z-220. Uses common AA batteries – 320 full flash outputs per set of AA NiMH (2,700mAh) batteries to fill the large cards of modern DSLR systems. High power without bulky dedicated battery packs.
• Super fast recycle time: 1.6 seconds after full dump when using AA NiMH (2,700mAh) batteries. For less than full dumps recycle time is virtually instantaneous. Keep up with the high-speed burst imaging possible with DSLR systems.
• Light Quality
  • Clean daylight color temperature: 5500K for an unbiased, “natural” baseline color temperature at initial image capture, for straightforward image post processing of desired color characteristics in macro and wide angle.
  • Wide circular beam angle: 100 degree circular beam fully covers 100 degree wide angle attachment lenses or 20mm lenses in fullframe DSLR systems. Increased flash surface area of Twin "T" configured flash tubes (pdf 462K) gives softer lighting and 100 degree full frame coverage even if strobe head is tilted off axis relative to camera. –0.5 and –1.5 Diffusers, included standard with Z-240, increase coverage to 110 degrees.
• Ultra Multimode - multiple flash exposure modes to suit many camera types and shooting styles.
  • Manual: 13 steps of manual flash output control - the most of any professional level strobe available. Controllable in 1/2EV increments, for high level professional quality lighting.
  • S-TTL: (pdf 234K) Automatic TTL first shot accurate exposure as simple as pressing the shutter button with digital cameras using a pre-flash. Easy, accurate operation for users wanting point-and-shoot convenience without setting camera and strobe controls. Compatible with most digital camera systems having a pre-flash and a transparent housing or optical window. Just set the camera to P Mode and "force flash", and the strobe to S-TTL and start shooting.
  • External Auto: (pdf 259K) Just match the strobe's aperture value to the camera's and start shooting. If necessary, fine-tune exposure with 24 steps of control. In “External Auto” the Z-240 itself automatically adjusts for correct flash output amount and “proper” exposure. Just set the strobe’s aperture to match the camera’s aperture value. It is not necessary to rely on the camera’s automatic flash adjustment control. With dual strobes, subtly vary light output to each strobe to freely control shadows according to your artistic intention.
  • Nikonos TTL: True “TTL” (in the traditional sense), supports film camera systems having conventional Nikonos TTL circuitry, or those having conversion circuitry compliant with the Nikonos protocol.
• Advanced Cancel Circuit (pdf 169K)In External Auto and Manual Modes when using pre-flash type cameras, the circuit reproduces the camera’s pre-flash, but at higher intensity for optimum underwater performance, faster internal strobe recycle time, quicker follow-up shots, and longer battery life.
• “Clear Photo System” Compatible (pdf 169K)
  For point and shoot digicams, or other systems with clear housings and internal strobes,“Clear Photo System” (Patent Pending) reduces backscatter caused by light coming from the camera’s internal strobe illuminating suspended particles in front of the lens, enabling clearer, higher quality images.
  First, place a “Clear Photo Filter” over the camera’s internal flash. This filter blocks visible light, only allowing non-visible wavelengths to pass though. Accordingly, there is no visible light to illuminate the particles in front of the lens. The non-visible light is picked up by a fiber optic cable and relayed to the strobe, triggering a flash output. Clear Photo Film is included with INON “Optical D Cable/Cap Sets” available for various camera/housing systems.
• Integral manual ON, auto OFF Focus/Target Light with Single or Continuous modes to support auto or manual focusing and accurate strobe aiming.
• Connection methods: Fiber optic cable or traditional 5-Pin electrical cable
• Standard Accessories: Z-240 strobe package includes two diffusers: a –0.5 and a –1.5 stop units; spare O-rings and O-Ring grease.
• Inon Quality & Reliability – equipment you can trust out of the box, for years. Peace of mind at your local dive site, or 5,000 miles away on a remote liveaboard, Inon strobes perform consistently and reliably.
  • Reliable design: Durable design and polycarbonate body construction with 100 meter (330 feet) depth rating ensure years of trouble-free rugged use.
  • Reliable quality: 100% inspection during manufacturing and before shipping: Each strobe’s flash output calibrated. All strobes pressure tested. Each strobe function tested after pressure test.
  • After service & support: Inon America stands by all its products, offering full overhaul, service and repair, either directly or through its handpicked, knowledgeable dealer network.