Canon Digital Camera Lens manual Wireless Flash Photography, TTL Wireless Autoflash Control

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WIRELESS FLASH PHOTOGRAPHY

EOS CAMERAS

Multiple Speedlites can obtain lighting effects not possible with a single Speedlite. Previous multiple Speedlite systems required cumbersome wires to connect the Speedlites and camera. This is no longer

the case with EX-series Speedlites and an EOS SLR. Everything is now wireless as well as automatic.

Wireless flash works with one or more Speedlites 550EX or 420EX as slave units. Speedlite

550EX or Speedlite Transmitter ST-E2 is attached to the camera and the slave unit is positioned remotely. The on-camera Speedlite or Transmitter serves as the master unit which transmits wireless signals to an unlimited number of other Speedlites 550EX or 420EX which serve as slave units.

The master unit’s flash can also be enabled or disabled, and when disabled, it can still transmit wireless optical signals.

Speedlite Spotlights both girls were illuminated with one Speedlite each. Ambient light was retained in the room down the hall. The compactness of the Speedlites and wireless control were key features which made this shot possible

• EF 28-70mm f/2.8L USM lens, 1/20 sec. at f/3.5

E-TTL Wireless

Autoflash Control

Up to three groups (for main, fill, and background flash) of slave units can be set up for optimal, complete control of lighting. The slave unit’s ID is set to A, B, or C. The flash output ratio between two Speedlite groups can be adjusted automatically from 8:1 to 1:1 or from 1:1 to 1:8. The flash output of the C Speedlite group can be adjusted through flash exposure compensation. The E-TTL autoflash system controls the total flash output to obtain a correct exposure. Also, when Speedlite 550EX is used with the EOS-1Ds, EOS-1D, EOS 10D, EOS 300D, EOS D60, EOS D30, EOS-1v, EOS-3, EOS 30/33 or EOS 300V, you can fire a modelling flash for 1 sec. at 70Hz, by pressing the depth-of-field preview button to preview the flash effects before taking the picture. Even with multiple Speedlites, the modelling flash fires according to the flash ratio you have set.

E-TTL wireless autoflash can also be used with most other Speedlite features, such as

FE Lock, FP Flash, Flash Exposure Bracketing/Compensation, and Stroboscopic Flash. Finally, for macro shooting, the Macro Ring

Lite MR-14EX and Macro Twin Lite MT-24EX can be used as master units as well.

Speedlite

Transmitter ST-E2

Instead of using a Speedlite 550EX as the on-camera master unit, this wireless transmitter can be used. The ST-E2 can control up to two groups of slave units with ratio control between each group.

Blonde and Brunette One slave unit was aimed at a black reflector and another at a white reflector

• EF 85mm f/1.2L USM lens, 1/15 sec. at f/4.5

550EX

B

550EX aimed at

 

 

C

white reflector

 

A

EF LENSES

SPEEDLITESSPEEDLITES

POWERSUPPLIES

550EX aimed at black reflector

EOS-3+550EX

Speedlite Transmitter ST-E2

ADVANCED FEATURES, E-TTL COMPATIBLE Compatible with E-TTL autoflash functions, groups of 550EX Speedlites are able to take advantage of High-speed Sync, FE Lock, Flash Exposure Bracketing, and pre-flash evaluative metering.

BUILT-IN AF-ASSIST BEAM The AF-Assist Beam automatically fires in low-light and low-contrast situations to assist the camera’s autofocusing system.

SETS AND CONTROLS

FLASH RATIOS*

Transmitter ST-E2 sets and controls

Resting Girl Two slave units aimed at reflectors were used

• EF 50mm f/1L USM lens, 1/60 sec. at f/4

550EX550EX

EOS-3+ST-E2

550EX

550EX

EOS-3+

ST-E2

ACCESSORIES

DIGITAL

ACCESSORIES

SHOOTING

ALL

Weight: 100g (Including battery)

Developed in conjunction with the Speedlite 550EX and the EOS-3 camera, this master control device for a wireless Speedlite flash system meets and exceeds professional and advanced amateur standards. Its dedicated transmitter controls an unlimited number of 420EX or 550EX Speedlites as slave units

up to 33ft/10m away outdoors and 49.5ft/15m away indoors. It is mounted as a clip-on with shoe-lock lever and locking pin.

all functions of its Speedlite 550EX slave units. Flash ratios, for example, are controllable between two groups of 420EX and/or 550EX Speedlites, over a six-stop range.

HIGH SPEED FP FLASH

High Speed FP (Focal Plane) flash for synchronisation at all shutter speeds is available. Larger apertures can be used to obtain better background blur. Additionally, fill flash can be used for moving subjects in daylight.

*Wireless E-TTL with full ratio control possible with EOS-1D, EOS 1Ds, EOS 10D, EOS 300D, EOS-1v, EOS-3, Elan 30/33 and EOS 300V.

 

Speedlite 550EX mounted

Speedlite Transmitter ST-E2 on the EOS-3

on the mini stand (provided)

Side Lighting Side lighting with a remote slave unit

Front Lighting On-camera flash usually results

gives a three-dimensional effect

in flat lighting

• EF 28-70mm f/2.8L USM lens, 1/20 sec. at f/3.5

• EF 28-70mm f/2.8L USM lens, 1/20 sec. at f/3.5

 

550EX

EOS-3+

EOS-3+

ST-E2

550EX

A direct flash from the left and a reflected flash on the right lit the flowers

• EF 28-70mm f/2.8L USM lens, 2 sec. at f/6.7

PERIPHERALS CASES AND STRAPS

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Contents EOS System EOS the Power to Inspire EOS Digital SLR World’s Fastest Digital SLRPhotography Without Limits Accessories Shooting Peripherals EOS Digital TechnologyCanon Image Rendering Closer Look at Canon Digital SLR TechnologiesEOS 35MM SLR Ultimate Professional VisionInspired, with the Fastest AF in its Class Easy Way to Get into EOSEOS-1D Mark EOS 30V/33VEOS-1Ds EOS 300DUltra-Wide Zoom TelephotoTelephoto Zoom Standard ZoomCanon Lens Technology Canon EF Lens The Heart of the EOS SystemSeries Lenses EF Mount Specialty LensesEF Lens Specifications EF Lens AccessoriesAccessories Shooting EOS CamerasSpeedlites Speedlite Technology Wireless Flash Photography TTL Wireless Autoflash ControlSpeedlite Transmitter ST-E2 Sets and Controls Flash RatiosSpeedlite Accessories Power Supplies Battery Pack BP-E1 Battery Pack BP-300Battery Pack BP-220 Battery Pack BP-50 Battery Pack BP-200Digital Accessories Shooting Accessories Imaging System Configuration Ec SeriesCanoScan FS4000 US EOS Link Software ES-E1Cases and Straps EH14-LDigital EOS Strap L4 EOS Wide Neck Strap EW-100ICAN0238

Digital Camera Lens specifications

Canon has firmly established itself as a leading brand in the world of photography, and its digital camera lenses play a crucial role in delivering exceptional image quality and versatility. These lenses, compatible with Canon's range of digital cameras, feature advanced technologies and characteristics that cater to both amateur and professional photographers.

One of the standout features of Canon lenses is their advanced optical design. Many Canon lenses utilize Ultra-Low Dispersion (UD) glass elements and aspherical lens elements, which significantly reduce chromatic aberration and distortion. This ensures sharp, high-contrast images with minimal color fringing. The use of Super Spectra coating further enhances light transmission while minimizing ghosting and flare, allowing photographers to capture stunning images even in challenging lighting conditions.

Canon offers a diverse lineup of lenses, including prime, zoom, macro, and telephoto options. Prime lenses, known for their simplicity and wide apertures, are especially popular among portrait photographers for their ability to create beautiful bokeh. Zoom lenses provide flexibility, allowing users to easily transition between different focal lengths without changing lenses. This is ideal for dynamic shooting environments where every second counts.

In recent years, Canon has also integrated advanced autofocus technologies into its lenses. The Dual Pixel autofocus system, which is found in many of its newer lenses, enables fast and accurate focusing, making it easier to capture moving subjects. Additionally, Canon's STM (Stepping Motor) lenses provide smooth and silent autofocus performance, which is particularly beneficial for video recording.

Another key characteristic of Canon lenses is their build quality. Many of them are designed to withstand the rigors of professional use, featuring weather-sealed constructions that protect against dust and moisture. This durability ensures that photographers can confidently shoot in various weather conditions without worrying about damaging their equipment.

Canon also places a strong emphasis on compatibility and innovation through its RF lens mount system. Introduced with the Canon EOS R series, the RF lenses utilize a larger diameter and shorter flange distance, which allows for more creative possibilities and design flexibility. This innovation has led to the development of cutting-edge lenses with enhanced performance that complement the latest mirrorless camera technologies.

In conclusion, Canon digital camera lenses are a testament to the brand's commitment to excellence in photography. With their advanced optical performance, innovative autofocus technologies, and robust build quality, Canon lenses are designed to meet the demands of photographers at every skill level, empowering them to capture their vision with precision and clarity. Whether you’re exploring landscapes, photographing events, or capturing intimate portraits, Canon lenses offer the tools necessary to elevate your photographic experience.