Using an External Flash (Optional). Pentax K-50, 10928

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Using an External Flash (Optional)

245

Using an optional external flash AF540FGZ, AF360FGZ, AF200FG or

AF160FC enables a variety of flash modes such as P-TTL auto flash mode. z : Available

#: Some functions are restricted.

×: Functions are unavailable.

Flash

Camera Function

Red-eye reduction flash

Auto flash discharge

Automatically switching to the flash sync speed

Aperture value is automatically set in e and b mode

P-TTL auto flash

Slow-speed Sync

Flash exposure compensation

AF assist light of external flash

Trailing Curtain Sync *2

Contrast control sync flash

Slave flash

High-speed sync

Wireless flash

Built-in

Flash z z z z

z z

× z

# *3

# *4

AF540FGZ

AF360FGZ z z z z

z z z z z z z

z *5

AF200FG

AF160FC z z z z

z z z

*1 Available only when using a DA, DA L, D FA, FA J, FA, F or A lens.

*2 Shutter speed of 1/90 sec. or slower.

*3 When combined with the AF540FGZ or AF360FGZ, 1/3 of the flash discharge can be output by the built-in flash and 2/3 can be output by the external flash.

*4 Available only when combined with the AF540FGZ or AF360FGZ.

*5 Multiple AF540FGZ or AF360FGZ units, or a combination of an AF540FGZ or AF360FGZ unit and the built-in flash is required.

• Flashes with reversed polarity (the center contact on the hot shoe is minus) cannot be used due to the risk of damaging the camera and/or flash.

• Do not combine with accessories that have a different number of contacts, such as a Hot Shoe Grip, as a malfunction may occur.

• Combining with flashes from other manufacturers may cause equipment breakdown. We recommend using the AF540FGZ, AF360FGZ or AF200FG.

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Using the P-TTL Auto Flash

You can use the P-TTL auto flash with an AF540FGZ, AF360FGZ,

AF200FG or AF160FC flash unit.

Remove the cover of the hot shoe, and attach the external flash.

Turn on the camera and the external flash.

Set the external flash mode to [P-TTL].

Make sure that the external flash is fully charged, and then take a picture.

The b will light in the viewfinder or Live View screen when the flash is ready (fully charged).

• For details such as operation method and effective distance, refer to the external flash manual.

• Never press the E button when any external flash unit is attached to the camera. The built-in flash will hit the external flash. If you want to use both at once, set the wireless mode or connect them using the extension cord.

(p.250)

247

Using the High-speed Sync Flash

With an AF540FGZ or AF360FGZ flash unit, you can discharge a flash to take a picture at a shutter speed faster than 1/180 seconds.

Remove the cover of the hot shoe, and attach the external flash.

Set the mode dial to b or a.

Turn on the camera and the external flash.

Set the external flash sync mode to HSb (high-speed sync).

Make sure that the external flash is fully charged, and then take a picture.

The b will light in the viewfinder or Live View screen when the flash is ready (fully charged).

• High-speed sync is available only when the shutter speed is set faster than

1/180 sec.

• High-speed sync is not available in p mode.

• High-speed sync is not available with the built-in flash.

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Using Flash in Wireless Mode

By using two external flashes (AF540FGZ or AF360FGZ) or using the built-in flash with one or more external flashes, you can shoot in P-TTL flash mode without connecting the flash units with a cord.

• Set the external flash to WIRELESS.

• Two or more AF540FGZ/AF360FGZ external flashes are required to use the high-speed sync flash in wireless mode. This function cannot be used in combination with the built-in flash.

• Set the wireless mode of the external flash not directly connected to the camera to SLAVE.

Setting the Channel for the External Flash

First, set the channel for the external flash unit.

Set the channel for the external flash unit.

Remove the cover of the hot shoe, and attach the external flash.

Turn on the camera and the external flash, and press the shutter release button halfway.

The built-in flash is set to the same channel as the external flash unit.

Be sure to set all the flashes to the same channel. Refer to the manual of the

AF540FGZ or AF360FGZ for details on how to set the channel on the external flash.

249

Wireless Shooting Using a Combination of the Built-in

Flash and an External Flash Unit

Set the camera to wireless flash mode when using an external flash in combination with the built-in flash.

Remove the external flash unit after the channel is set on the camera, and place it at the desired location.

Set the camera’s flash mode to r .

The camera is ready to take a picture.

The channel for the built-in flash is displayed in the viewfinder.

OK MENU

Press the E button.

Confirm that both flashes are fully charged, and then take a picture. r is not available in the following situations.

• In C mode

• when the drive mode is set to [Remote Control (3 sec. delay)]

• when the lens aperture ring is set to a position other than s

You can change the built-in flash discharge method used in wireless mode. Set in [17. Flash in Wireless Mode] of the [A Custom Setting 3] menu.

Discharges the built-in flash as a master flash. (default setting)

Off Discharges the built-in flash as a control flash.

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Wireless Shooting Using a Combination of External

Flash Units

Set the wireless mode of the external flash directly connected to the camera to [MASTER] or [CONTROL].

MASTER

CONTROL

Discharge both the flash directly connected to the camera and the wireless flash unit as the main flash.

Discharges the flash directly connected to the camera as a control flash only, not as the main flash.

On the wireless remote flash unit, set the wireless flash mode to [SLAVE] and set the channel to the same channel as the flash directly connected to the camera. Then, place it at the desired location.

Confirm that both flashes are fully charged, and then take a picture.

• The Shake Reduction function is not available.

• When using multiple AF540FGZ/AF360FGZ external flashes and shooting with the high-speed sync flash in wireless mode, set the flash directly connected to the camera to high-speed sync flash mode.

Connecting an External Flash with an

Extension Cord

When using an external flash away from the camera, attach the Hot Shoe

Adapter F

(1; optional) to the camera hot shoe and an Off-Camera Shoe

Adapter F (2; optional) to the bottom of the external flash, and then connect these with the Extension Cord F5P (3; optional). The Off-

Camera Shoe Adapter F can be mounted to your tripod using the tripod screw.

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When combining with the built-in flash

Multiple Flash Shooting Using Extension Cords

You can combine two or more external flashes (AF540FGZ, AF360FGZ or

AF200FG).

For connecting an AF540FGZ flash unit, you can use the extension cord connection terminal on the flash. For connecting an AF360FGZ or

AF200FG flash unit, as shown in the illustration, connect an external flash and the Hot Shoe Adapter F (4; optional) to the Off-Camera Shoe

Adapter F (2; optional) and then connect another Off-Camera Shoe

Adapter F (2) with external flash using the Extension Cord F5P (3; optional).

Refer to the manual of the flash for details.

When combining two external flashes

2 4

3 3

When using multiple external flashes or using an external flash with the built-in flash, P-TTL is used for flash control.

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Using the Contrast Control Sync Flash

Combining two or more external flashes (AF540FGZ, AF360FGZ or

AF200FG) or using an external flash in combination with the built-in flash allows multiple flash photography (contrast control sync flash photography). This is based on the difference between the amounts of light discharged from multiple units.

The AF200FG must be combined with the AF540FGZ or AF360FGZ.

Connect the external flash to the camera indirectly.

Refer to p.250 for details.

Set the sync mode for the external flash to contrastcontrol-sync mode.

Confirm that both the external flash and built-in flash are fully charged and then take a picture.

• When using two or more external flashes and the contrast control sync mode is set on the external master flash unit, the flash output ratio is 2 (master unit)

: 1 (slave units). When an external flash is used in combination with the builtin flash, the flash output ratio is 2 (external flash) : 1 (built-in flash).

• When using multiple external flashes or using an external flash with the builtin flash, P-TTL is used for flash control.