Source: Owner's Manual
| Type | Direct-sync, shoe-mount flash with E-TTL auto flash control (E-TTL test preflash, AF-assist beam, auto zoom head, and bounce capability) |
| Compatible cameras |
Type-A cameras (with E-TTL auto flash control)
Type-B cameras (with TTL auto flash control) |
| Flash coverage and Guide No | See Guide No table |
| Battery life and recycling time | See Battery Life table |
| Flash duration | 1.4ms or less. (Normal Flash) |
| Flash coverage | Auto zoom head covers 24mm, 28mm, 35mm, 50mm, 70mm, and 105mm lenses automatically. |
| Flash modes |
(1) Normal sync
(2) High-speed sync (FP flash); Type-A Camera (3) Test firing (with test firing button) |
| Tiltable angles |
Max. tilt angle: 90upward
Click stops: 0deg, 60deg, 75deg, 90deg |
| Exposure control modes |
(1) E-TTL auto flash(Type-A Camera).
(2) FE Lock (Type-A Camera). (3) TTL auto flash (with EOS cameras without E-TTL auto flash capability). |
| Flash metering system |
(1) E-TTL auto flash metering with a test preflash (Type-A Camera)
(2) E-TTL auto flash partial metering with a test preflash (Type-A Camera). (3) TTL off-the-film auto flash metering (with Type-B cameras). |
| Flash exposure compensation |
(1) Automatic flash output reduction for fill flash
(2) Enable with cameras having flash-exposure compensation capability. |
| Flash range (with 50mm f/1.4 lens at ISO 100) |
(1) With normal sync: 0.7 - 22 metres / 2.3 - 73ft
(2) With high-speed sync: 0.7 - 11.9 metres / 2.3 - 39.27ft (at 1/125 sec). |
| Sync speed | See table (not included here) |
| Flash-ready indication | Red pilot lamp. |
| AF-assist beam linkage and range | Linked to centre focusing point, effective from approx. 0.7 to 10 metres / 2.3 to 33ft (in total darkness). |
| Auto power off | Power turns off automatically after 90 sec. of non-use. |
| Power source |
(1) Four size-AA alkaline batteries (LR6 or AM-3)
(2) Four size-AA NiCd batteries (KR15 or KR51) |
| Dimensions (mm) | 75 (W) x 113.5 (H) x 103.5 (D) / 2-15/16 (W) x 4-1/2 (H) x 4-3/4 (D) |
| Weight | 270g (excluding batteries) / 9.45oz |
| Flash Coverage | 24 | 28 | 35 | 50 | 70 | 105 | |
| Normal (full) Output (G.N.) | 21 | 23 | 28 | 31 | 33 | 38 | |
| FP Flash | Shutter Speed | ||||||
| 1/180 | 11.2 | 12.3 | 15.0 | 16.6 | 17.6 | 20.3 | |
| 1/250 | 10.0 | 11.0 | 13.3 | 14.8 | 15.7 | 18.1 | |
| 1/350 | 8.7 | 9.6 | 11.6 | 12.9 | 13.7 | 15.8 | |
| 1/500 | 7.3 | 8.0 | 9.8 | 10.8 | 11.5 | 13.3 | |
| 1/750 | 6.2 | 6.8 | 8.2 | 9.1 | 9.7 | 11.2 | |
| 1/1000 | 5.2 | 5.7 | 6.9 | 7.7 | 8.2 | 9.4 | |
| 1/1500 | 4.4 | 4.8 | 5.8 | 6.4 | 6.9 | 7.9 | |
| 1/2000 | 3.7 | 4.0 | 4.9 | 5.4 | 5.8 | 6.6 | |
| 1/3000 | 3.1 | 3.4 | 4.1 | 4.6 | 4.8 | 5.6 | |
| 1/4000 | 2.6 | 2.8 | 3.5 | 3.8 | 4.1 | 4.7 | |
| Battery Type | No. of flashes | Recycling Time |
|
Size-AA alkaline batteries
(LR6 or AM-3) | 260 to 1800 | 0.1 to 7.5 sec. |
|
Size-AA NiCd batteries
(KR15 or KR51) | 75 to 500 | 0.1 to 4.5 sec. |
| Type-A Camera | E-TTL | EOS 50, EOS 50E, EOS ELAN II, EOS ELAN II E |
| Type-B Camera | TTL | EOS 650, EOS 620, EOS 750, EOS 850, EOS 630, EOS-1, EOS RT, EOS 10, EOS 10S, EOS 700, EOS 1000, EOS REBEL, EOS 100, EOS ELAN, EOS 1000N, EOS REBEL II, EOS 1000FN, EOS REBEL S II, EOS 5, EOS A2, EOS A2E, EOS 500, EOS REBEX X, EOS 5000, EOS 888, EOS-1N, EOS-1N RS |
| Speedlite Feature | With Type-A Camera | With Type-B Camera |
|---|---|---|
| E-TTL auto flash control | O | X (1) |
| FP flash | O | X |
| FE lock | O | X |
| Second-curtain sync | O | X |
| Fill flash | O | O |
| Slow-speed sync | O | O |
| Bounce flash | O | O |
| Multiple flash | O (1) | O |
| Flash exposure compensation | O | O (2) |