Complete with built-in radio transmission wireless functionality, the Speedlite 600EX-RT sits at the top of Canon's on-camera E-TTL / E-TTL II compatible flash lineup with a powerful guide number of 197' at ISO 100 and 200mm. This two-way 2.4 GHz radio system provides added reliability and a range up to 98.4' among up to 5 groups with a total of 15 individual Speedlites. This system also does not need direct line-of-site like traditional optical-based transmission and will work through obstacles.

For added coverage and functionality, the flash's zoom head can reach from 20-200mm, with the option for wide 14mm coverage when the built-in diffusion panel is used. Also, the unit can tilt from -7 to +90° and rotate 180° either left or right for complete bounce capabilities. On the back of the 600EX-RT is a backlit dot-matrix LCD panel that displays the status and allows users to easily access and change settings. Additionally, the flash is durable with a redesigned contact construction and improved dust and water resistant sealing.

Other capabilities of the 600EX-RT include a stroboscopic mode as well as high-speed, first and second curtain sync settings for more control over your image's final look. The flash is powered by 4 AA batteries which provide a recycle time of 0.1-5.5 seconds, though it does have a port for an optional external power pack. It comes with a color filter holder with case, a light orange filter, a dark orange filter, a mini stand, and a Speedlite case.

The Canon ST-E3-RT Speedlite Transmitter can help you take full advantage of all the features on Canon's Speedlite 600EX-RT and 430EX III-RT flashes. The ST-E3-RT makes complex lighting setups simple by facilitating radio-controlled, two-way wireless transmission up to 98.4' away, among up to five groups or fifteen individual Speedlites. It has controls similar to the Speedlite 600EX-RT, including multiple flash metering options, and a variety of flash modes. Compact design with highly reliable construction combined with a clearly laid-out information panel and buttons with back lighting make this an indispensible tool for advanced professional flash photography. The ST-E3-RT represents the next generation in wireless flash systems.

Note: Because it does not have an optical transmission function, the Speedlite Transmitter ST-E3-RT is not compatible with earlier Speedlite models such as 580EX II.

The Watson 8-Bay Rapid Charger for AA / AAA NiMH or NiCd Rechargeable Batteries charges up to 8 AA or AAA size nickel-metal hydride or nickel-cadmium rechargeable batteries. Charging time ranges from 3.6-4.6 hr for AA batteries, and 1.6-2 hr for AAA's. Eight individual LCD indicators give the charging status for each battery. Patented technology permits the charging of different sizes and types of battery simultaneously--charge a AA with a AAA, or an NiMH with an NiCd.

The charger's intelligent microprocessor doles out the full charge to each battery while preventing overcharging, thanks to Delta Voltage Protection. The Safety Timer with Automatic Timer Shut-Off senses when batteries are fully charged and ceases charging. Automatic Charge Current Selection automatically chooses the optimal current for the batteries you're charging. Reverse Polarity Protection and Alkaline and Bad Battery Protection safeguard the charger and your batteries against damage when batteries are installed improperly. There's also a discharge function, allowing you to refresh the batteries prior to charging.

The charger features an icon that shifts up and down during discharging, and stops shifting when discharge is complete. This icon also displays battery capacity while charging. The full-battery icon lights up when the batteries are fully charged. A flashing full-battery icon indicates an abnormality, such as the presence of a bad or alkaline battery, and at this point the charger will cease its operation. The charger is powered by an included external AC adapter with switching 100-240V power for worldwide use, or by the 12-24V DC cord which can plug into your car's cigarette lighter for charging on-the-go.

This 8-pack of 2300mAh Watson AA NiMH Rechargeable Batteries is a package of 8 AA size nickel-metal hydride (NiMH) rechargeable batteries. Each has a voltage of 1.2V and a capacity of 2300mAh. These batteries feature excellent high-drain performance and can be recharged up to 1000 times. Additionally, they are mercury-free and environmentally friendly.

This is an Impact Digital Flash Umbrella Mount Kit. It includes 2- Impact 32" White umbrellas with removable black backing. Umbrellas soften, broaden, and diminish the light output of any tungsten or flash light source. A white umbrella without a black backing may also be used as a makeshift softbox, although the use of the light will not be as efficient as with a light box.

Choosing umbrella size is determined by the size of the subject, and the strength of the light supply being used. Choosing an umbrella surface is as subjective as choosing a paint and brush. Each umbrella is perfect for a 1 person head shot, or 3x4 ft product setup.

Each of the two Impact brand umbrella brackets fit on top of almost any light stand, has different size stud adapters for various grip clamps, includes a cold shoe mount for your shoe-mount flash. It swivels, tilts, locks into place, and accepts almost any small to medium sized umbrella.

The Impact brand light stands are black, air-cushioned, and rise to a maximum height of 8' (2.4 m).

When using this kit with the Nikon SB-900/910 or Canon 600EX-RT, additional umbrella brackets which offer an "adjustable" shoe mount are required (see Impact #9101880).

This plastic Watson Case holds up to 4 AA or AAA batteries in dedicated slots. It has an extremely compact form factor for easy storage in your pocket or a small compartment in your gear bag. The case has a snap closure and features an attachment point for connecting a second identical case, which could in turn be connected to another to create a chain, giving you an easy expansion option for storing more batteries.