Cactus (1)

Canon (8)

Fujifilm (3)

Metz (23)

Nikon (7)

Olympus (4)

Panasonic (3)

Pentax (5)

ProMaster (23)

 i-TTL Balanced Fill-Flash with CLS compatible cameras (2)

A-TTL (1)

ADI (2)

ADI Flash Mode (2)

D-TTL (4)

E-TTL (17)

E-TTL II (15)

E-TTL wireless by Canon (1)

Four Thirds System TTL (2)

Micro four thirds (1)

Olympus TTL (2)

Olympus wireless RC (1)

P-TTL (4)

TTL (12)

TTL Pre-Flash (2)

TTL auto (6)

auto (2)

auto flash (1)

i-TTL (11)

i-TTL-BL (2)

manual (6)

not specified (1)

0 - 10 (2)

100 (100' / 30 m at extended/50 mm reflector position, ISO 100) (3)

11 - 20 (2)

141' (1)

154 ft./47m at ISO 100 and 105mm flash coverage.  (1)

157'/48m at 105mm position (2)

190’ / 58m (at 105mm focal length, 100 ISO) (2)

21 - 30 (5)

28 at ISO 200 (when built-in wide panel is not in use), Guide Number 16 at ISO 200 (when built-in wide panel is in use) (1)

30m / 100' at 100 (2)

31 - 40 (3)

34.5 m/113 ft. (at 35 mm) 55 m/180 ft. (at 200 mm) (FX format, standard illumination pattern) (at ISO 100) (1)

36 (1)

40m for ISO 100 (5)

41 - 50 (2)

44 (6)

49.2 ft./15m at ISO 100 (1)

51 - 60 (5)

52 m /171ft (2)

54 at ISO 100/m (1)

58m ( ISO 100 in meters) (2)

61 - 70 (5)

85.3' / 26m (5)

24m / 78.7ft. (at ISO 100) (1)

20 (ISO 100, m/ft) (1)

42 (ISO 100, m/ft) (1)

Guide Number (ISO 100) (1)

One flash GN 6.0 (1)

The Guide No. is approximately 68.9 ft./21.0m at ISO 100 and 24mm flash coverage.
The maximum Guide No. is approximately 85.3 ft./26.0m at ISO 100 and 50mm flash coverage. (1)

Two flashes GN 8.5 (1)

approx. 50 (ISO100·m) / 164 (ISO100·ft) (1)

not specified (8)