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		2006	1996		2002	1990>

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