Canon Speedlite 420EX TTL-Shoe Mount Flash
The Speedlite 420EX is sure to appeal to EOS users everywhere with its combination of power, features and affordability. It's fully E-TTL compatible, and reverts to standard TTL operation when used on older EOS bodies or the T90. The fully swiveling bounce head zooms automatically over a range of 24mm-105mm. Most impressively, its Wireless E-TTL compatibility permits it to function as a "slave" unit, triggered by a 550EX; ST-E2, or MR-14EX. Any number of 420EX and 550EX Speedlites can be combined as "slave" units.
| Maximum Guide Number 138 (ISO 100, feet) at 105mm setting; G.N. 101 at 35mm setting |
| Approximately 1 / 2-stop less powerful than 550EX |
| Full E-TTL flash operation with "Type-A" bodies (EOS-1v, EOS-3, Elan 7 / 7E, Rebel 2000, Elan II/IIE, and Rebel G; EOS IX and IX Lite; and digital EOS D2000 and D30 bodies.) |
| E-TTL features include high-speed FP sync mode, and FE Lock (spot / partial flash metering) |
| Fully compatible as an affordable Wireless "slave" flash, with EOS-1v, EOS-3, Elan 7 / 7E, & D30 |
| Taller than previous 380EX flash, but head is 30% smaller, and both width & depth are smaller |
| Powered by four AA-size batteries (alkaline, lithium, Ni-Cd, or Ni-MH) |
| Totally TTL-compatible with all "Type B" EOS cameras, and the manual-focus T90 SLR body. |
| Type | E-TTL/TTL-Shoe Mount |
| Guide Number | G.N. 138 (ISO
100, feet) at 105mm setting; G.N. 101 at 35mm setting |
| Zoom Range | 24-105mm |
| Bounce Capability | Yes |
| Swivel Capability | Yes |
| Auto Settings | full TTL at all apertures |
| Angle of Coverage | 84 Degrees (24mm in 35mm) to 23 Degrees (105mm in 35mm) |
| Recycle Time | 7 Seconds
(based on alkaline batteries & full power) 4 Seconds (based on NiCd batteries & full power) |
| Power Source | 4 AA-size batteries (alkaline, lithium, Ni-Cd, or Ni-MH) |
| Dimensions (W x H x D) | 2.8 x 4.8 x 3.9 in. |
| Weight | 10.6 oz. |
| Notes & Special Features | AF-assist
Beam: All Elan 7 points Wireless Triggering: Yes |