The Pentax AF-540 FGZ is a professional flash unit that is fully compatible with the entire line of Pentax cameras, from the original 67 to 645N II & MZ-S, MZ-SD or digital *ist, K100D, K110D and K10D series cameras. It will support advanced flash functions of even the latest digital SLR camera models.
Full manual control of flash output is possible, even in slave mode, or use the TTL flash capabilities of the camera its mounted on to achieve painless exposure with every aperture. The pop-up flash incorporated into many Pentax 35mm SLRs can be used to trigger the AF-540 FGZ wirelessly, and when combined with the MZ-SD or *ist D camera this is done with TTL metering!
NOTE: Off-camera corded TTL or P-TTL flash with the AF-540 FGZ requires two pieces; Hot Shoe Adapter F or Fg (catalog #31022 & 31045 respectively), and Extension Cord F5P or Extension Cord F5PL (37347 & 37349 respectively).
Type: Hot Shoe Clip-on TTL auto zoom flash unit with serial control Guide Number: Feet: With ISO 100, Manual: - 177 (85mm) - 164 (70mm) - 148 (50mm) - 128 (35mm) - 115 (28mm) - 105 (24mm) - 69 (20mm*) (* w/wide angle panel) Zoom Range: 85mm to 24/20mm*
(* w/wide angle panel)
Bounce Capability: Up: -10o, 0o, 30o, 45o, 60o, 75o, 90o Swivel Capability: Right: 0o, 30o, 60o, 90o, 120o, 150o, 180o
Left: 0o, 30o, 60o, 90o, 135o
Recycle Time: Alkaline (LR6) Approx. 6 sec. Approx. 200 Flashes
Nickel hydroxide (Ni-MH) Approx. 6 sec. Approx. 250 Flashes
Lithium (FR6) Approx. 6 sec. Approx. 350 Flashes
Special Features: Consecutive Discharge: Approx. 2 frames/sec for 50 pictures, at [M 1/64] output (with alkaline LR6 batteries) Other Color Temperature: Daylight Lighting Angle Zooming position: 85mm: Vertical Coverage: 23deg, Horizontal: 31deg, - 70mm: V: 26deg H: 36deg - 50mm: V: 34deg H: 46deg - 35mm: V: 45deg H: 60deg - 28mm: V: 53deg H: 70deg - 24mm: V: 60deg H: 78deg - 20mm*: V: 85deg H: 98deg (w/wide angle panel) AF Spotbeam Red beam emitted under low light or low-contrast conditions Compatible Film Speed ISO 25 - 1600 Flash Modes P-TTL auto, TTL auto, auto, manual Flash Exposure Compensation In P-TTL mode -3.0 to +1.0 steps (0.5 step increments) Flash Amount Setting With wireless slave: [1/1, 2/3, 1 / 2, 1 / 3]
Manual: [1/1, 1 / 2, 1 / 4, 1 / 8, 1 / 16, 1 / 32, 1/64]
Flash Sync Mode Leading-shutter-curtain sync,
Wireless Flash Control system: Optical pulse transmission
Wireless position: Master (M), control (C), slave (S)
Channels: 1 through 4
Compatible modes: P-TTL, auto (A), manual (M)
Effective range: Approx. 13ft (according to Pentax testing conditions)
Power Saving Automatic power-off: After approx. 3 min. of non-operation with the power in theON position, 6 min. in Auto, 1 hour in wireless mode Red-Eye Reduction Operates with autofocus cameras equipped with red-eye reduction feature Modeling Flash Modeling button fires flash consecutively for 1 second Wide Angle Panel Pull out manually, flash zoom position automatically sets to 20mm Catchlight Panel Pull out manually LCD Panel Illumination Light button illuminates the LCD panel for about 10 seconds, or press button again to turn off Power Source Size-AA batteries x 4, Alkaline LR6, Nickel Hydroxide (Ni-MH), or Lithium FR6 Dimensions 3.0"x5.6"x4.2" Weight without batteries 13.4 oz (380 g) without batteries