Canon AE-1 Manual page 41

Flash Duration: 1/500-1/50000 sec.
Aperture Choices: f/2.8 (red), f/5.6 (green) and f/ll (yellow) at ASA 100, and manual.
Auto Coupling Ranges: 1.5-10.6m (1.5-6.3m with Wide Adaptor) at red "A". 1-5.3m (1-
3.2m with Wide Adaptor) at green "A". 0.5-2.6m (0.5-1.6m with Wide Adaptor) at yellow
"A".
Flash Coverage: Covers 35mm lens. With Wide Adaptor covers 24mm lens.
Size: 79 (W; x 83 (D) x 116 (H)mm. (3-1/8" x 3-1/4" x 4-1/2").
Weight: 490g (1 lb. 1-5/16 ozs.) including batteries
Speedlite 188A Guide Number: 25 (ASA 100, m) or 41 (ASA 25, ft.).
Recycling Time: 0.5-8 sec with alkaline batteries and 0.5-6 sec. with Ni-Cd batteries on auto.
Number of Flashes: More than 200 with alkaline batteries and more than 70 with Ni-Cd
batteries on auto.
Flash Duration: 1/700-1/40000 sec.
Aperture Choices: f2.8 (red) and f5.6 (green) at ASA 100 and manual.
Auto Coupling Ranges: 1 0-9.Om (1.0-5.6m with Wide Adaptor) at red "A". 0 5-4.5m (0.5-
2.8m with Wide Adaptor) at green "A".
Flash Coverage: Covers 35mm lens. With Wide Adaptor, covers 28mm lens.
Size: 68 (W) x 52 (D) x 103 (H)mm. (2-11/16" x 2-1/16" x 4-1/16").
Weight: 290g (10-1 /4 ozs.) including batteries.
Speedlite 177A Guide Number: 25 (ASA 100, m) or 41 (ASA 25, ft.).
Recycling Time: 0.5-8 sec. with alkaline batteries and 0.5-6 sec. with Ni-Cd batteries on auto.
Number of Flashes More than 200 with alkaline batteries and more than 70 with Ni-Cd
batteries on auto.
Flash Duration: 1/600-1/50000 sec.
Aperture Choices: f/2.8 (red) and f/5.6 (green) at ASA 100, and manual.
Auto Coupling Ranges: 1.0-9.Om (1.0-5.7m with Wide Adaptor) at red "A". 0.5-4.5m (0.5-
2.8m with Wide Adaptor) at green "A"
Flash Coverage: Covers 35mm lens. With Wide Adaptor, covers 28mm lens.
Size: 72 (W) x 58 (D) x 107 (H)mm. (2-13/16" x 2-5/16" x 4-3/16").
Weight: 310g (10-15/16 ozs.) including batteries.
Speedlite 166A
Guide Number: 20 (ASA100, m) or 33 (ASA 25, ft)