Canon SpeedLite Blitz 300EZ

Guide Number Table (at ISO 100):
Zoom position (mm) 28 35 50 70
Normal flash 22 (73) 25(83) 28(93) 30 (100)
Rapid fire flash 5.5-15.5 (18-51) 6 2-17.7(20 59) 7-19.8 (23-66) 7.5-21.2(25 70)

(The above figures in parentheses indicate the guide numbers in feet at ISO 100) Flash Coverage Angle: Covers more than the fields of view of 28mm, 35mm, 50mm and 70mm using auto internal zoom mechanism.

Recycling Time:
Alkaline Ni-Cd
Normal flash approx. 0.3 to 8 sec approx. 0.3 to 6 sec
Rapid-fire flash approx. 0.3 to 1 sec approx. 0.3 to 1 sec

Number of Flashes:
.
Alkaline

Ni-Cd

EOS 620 Setting
P 1/60-1/250 sec Automatic
Tv 30-1/250 sec Manual
Av 30-1/250 sec Automatic
M 30-1/250 sec Manual
Normal flash
approx. 200 to 2000

approx. 65 to 650

Based on flash firing at 30 sec intervals with new alkaline or fully charged Ni-Cd batteries.
Flash Duration: 1 m sec or less
X-sync Shutter Speed:

X-sync Shutter Speed:
Flash Control System: TTL series control system with preflash function.
Flash Exposure Level Control: A maximum of 1.5 BV steps in the A-TTL mode when subject brightness is more than BV5 according to the camera's metering system.
Film Speed Setting: Automatically set by the camera.
Automatic Shooting Distance Range:
A-TTL normal flash approx. 0.7 to 17m (approx. 2 3 to 55.8 ft)
A-TTL rapid-fire flash (min..) approx. 0.7 to 3.9m (approx. 2.3 to 12.8 ft~)
A-TTL rapid-fire flash (max.) approx. 0.7 to 12 m (approx. 2.3 to 39.4 ft)