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Auto Focus Pentax Flashes

Information format and abbreviations

All AF flash units use a digital control interface, and therefore are usable only with the Pentax AF bodies. They are all capable of trailing shutter sync and AF spotbeam projection. All flashes were sold with leather-like vinyl cases.

Table 1. Pentax AF flash units.
Flash AF540FGZ AF500FTZ AF400FTZ AF360FGZ AF330FTZ AF240FT  AF160FC
GN (ISO 100/m) 32 (at 24 mm)
54 (at 85 mm)
30 (at 24 mm)
50 (at 85 mm)
20 (at 24 mm)
44 (at 105 mm)
14 (at 20 mm i)
21 (at 24 mm)
25 (at 35 mm)
30 (at 50 mm)
36 (at 85 mm)
20 (at 28 mm)
33 (at 85 mm)
24 16
Coverage (lens f, 35 mm equivalent) 20 i, 24 ~ 85 24 ~ 85 24 ~ 105 20 i, 24 ~ 85 28 ~ 85 35 37
Zoom manual (20 mm),
motorized (24 ~ 85 mm)
motorized manual manual (20 mm),
motorized (24 ~ 85 mm)
motorized
Remote TTL yes     yes      
P-TTL Mode yes     yes     yes
TTL Range (at 50 mm, ISO 100, f/2.8) 0.8 ~ 16 0.7 ~ 35.7 1 ~ 30 0.7 ~ 21.6 0.7 ~ 23.6 0.7 ~ 17 unknown
Auto Flash
Settings (ISO 100/m)
f/2 ~ f/22 unknown yes
Power Output
Levels (manual)
1/1, 1/2, 1/4, 1/8,
1/16, 1/32, 1/64
1/1, 1/2, 1/4, 1/8,
1/16, 1/32
1/1, 1/4 1/1, 1/2, 1/4, 1/8,
1/16, 1/32
1/1, 1/16 1/1, 1/4 1/1, 1/4, 1/16
Bounce -10 ~ 90 0 ~ 90 0 ~ 90 -10 ~ 90      
Swivel -135 ~ 180 -90 ~ 180 -90 ~ 180        
Wireless TTL yes     yes      
Controls for Flash
Compensation
yes (-3 ~ +1 EV)     yes      
Slave yes yes   yes      
Strobe   yes   yes      
High-Speed
Synchronization
yes     yes      
5P Sync Socket yes yes yes no   yes  
Power Source 4 AA,
4 LR6 (Alkaline),
4 Ni-MH,
or 4 FR6 (Lithium)
4 AA, (TR Power Pack II) 4 AA 4 AA,
4 LR6 (Alkaline),
4 Ni-MH,
or 4 FR6 (Lithium)
4 AA 4 AA 4 AA,
(Alkaline,
Lithium,
Ni-MH or
rechargeable)
Weight (g,
without batteries)
380 385 397 270 210 210 405
Flash Coverage Adapters built-in i   (FWA) built-in i   (FWB, FT)  
Introduced 2005 1992 1987 2001 1991 1987 2008
Discontinued still in production 2006 1996 still in production 2002 1990> still in production

i = For coverage of a 20 mm lens, slide the built-in wide-angle pannel out and down in front of the flash head.