GXR FAQs - By Product

[Question] Details on flash shooting operations with the GF-1 flash unit.

This article explains about operations of GXR and GF-1.

[Compatible camera models]
The digital cameras that have the Ricoh flash interface (hereafter Type R cameras).


Product information - Options > External flash

Ricoh flash interface

  • *Filmcameras are not supported.
  • *The external flash will not fire in some shooting modes or conditions; such as Internal shooting, Speed Cont (Hi), M-Cont Plus (Hi), even if it is attached. Use the internal flash for these cases.

[For usage of the other camera models than Type R cameras (that is listed above)]

With GR DIGITAL II, GR DIGITAL, GX200, Caplio GX100, this flash unit can be used in Ambient light auto, or Manual flash modes.

TTL flash - Pre-flash

In this mode, when you press the shutter release button, the flash will automatically fire at the most appropriate level.
  • * Flash will not fire depending on the shooting mode. In the case, the [Flash Off] icon will be displayed in the upper left corner on the screen.
1. Turn on the camera.

2. Pressing the ON/OFF button on the flash unit will start up the TTL mode automatically.

TTL flash setting
If the flash unit is set in other configurations, change the setting as follows.
  • Press the Mode select button to switch to the [NORMAL].
  • Press Flash power level select button to switch to [TTL-A].

3. When the PILOT lamp turns green, the flash is ready for shooting.

4. Press the shutter release button halfway to focus lock on the subject.

5. Press the shutter release button fully to take a picture with flash.

6. When using a zoom lens, if the focal length changes, the illumination coverage changes accordingly and the flash unit is automatically adjusted for the optimal illumination angle.

The shutter speed and aperture with using the flash unit will vary depending on the selected mode dial in the camera.
[Shutter speed and aperture in each mode]
Mode
Shutter speed
Aperture
auto
Automatic
Automatic
P
Automatic
Automatic
A
Automatic
Selected aperture
S
Selected shutter speed
Automatic
M
Selected shutter speed
Selected aperture
  • *When the flash mode on the camera is set to Flash Synchro, the shutter speed is automatically adjusted to match ambient light conditions.

Note [About the illumination coverage]
The illumination coverage will vary depending on the focal length in the range of between 24 mm to 105 mm. When using a focal length of tele side from 105 mm, it will cover the illumination coverage of 105 mm. But when using wider focal length than 24 mm, use the wide panel (18 mm). In this case, the illumination coverage will not be automatically linked to the zoom position.
  • * All illumination coverage values given are 35 mm filmcameras equivalent.

Note [About shooting distance from the subject]

If the captured image appears too dark even if using flash, get closer to the subject or select a higher ISO setting on the camera.

Related link :
GF-1 name of parts

Ambient light auto flash

1. Turn on the camera and the flash unit.

2.
  • Press Mode select button to set [NORMAL].
  • Set the flash power level between F2.8 ~ 5.6 with the Flash power level select button.
    If the subject is relatively far, or if you want a short time between flashes, set to F2.8 in power level. To get a deeper depth of field, set to F5.6 in power level.

Ambient light auto flash setting
3. Manually select the aperture on the camrea to match the aperture value selected on the flash unit.
If the camera does not offer the exact same value, select the closest value.
When using a zoom lens, check the aperture value again after adjusting the zoom and correct the aperture value if necessary.

4. Set a shutter speed slower than 1/250 second.

note [For GXR users]

Turn the mode dial to [M] (manual exposure), or to [A] (aperture priority). Adjust exposure to the value that was selected with the GF-1 (in the step 2 above) with the Up-down dial.

Exposure and shutter speed adjustment with GXR
With the ADJ. lever, set a shutter speed slower than 1/250 second.

    • Flash will not fire depending on the shooting mode. In the case, the [Flash Off] icon will be displayed in the upper left corner on the screen.
    • See the below for the details on the [M] mode or [A] mode operations.

[GXR with GR LENS A12 50 mm F2.5 MACRO camera unit] :
About the M mode (M: Manual Exposure mode)

About the A mode (A: Aperture Priority mode)

[GXR with RICOH LENS S10 24-72 mm F2.5-4.4 VC camera unit] :
About the M mode (M: Manual Exposure mode)

About the A mode (A: Aperture Priority mode)

[GXR with RICOH LENS P10 28-300 mm F3.5-5.6 VC camera unit] :
See the instruction manual that came with the P10 camera unit.

    • The correct exposure cannot be achieved in auto, P (Program shift), or S(Shutter priority) modes.
    • When the ISO setting is set to AUTO, the flash unit will be automatically adjusted to match the selected setting.
note [For cameras other than GXR (other than Type R)]

The ISO setting on the camera is not linked with the flash unit. Manually select the aperture value on the camera to match the ISO setting, using the following table as reference.


GF-1 aperture value
ISO64
ISO80
ISO100
ISO200
ISO400
2.8
2.2
2.5
2.8
4
5.6
4
3.2
3.6
4
5.6
8
5.6
4.5
5
5.6
8
11
  • *See the Camera User Guide for the details.
  • *The captured image may not come out as you expected, depending on the shooting conditions (subject, surroundings, color and reflectiveness of the background, etc.) In such case, try changing the aperture value on the camera or the shooting distance.

Manual flash

When you cannot get the exposure you intended, using the TTL auto or Ambient light auto mode, you can use manual flash to set the desired flash output level.

1. Turn on the camera and the flash unit.

2.
  • Press Mode select button to set [NORMAL].
  • Set the flash power level to FULL or 1/4 with the Flash power level select button.
Manual flash setting

3. For manual flash, use the following formula to select the aperture value.
Aperture value = Guide No. ÷ Shooting distance

Example) IF the guide No. is 30 and the shooting distance is 5 meters, the appropriate aperture value will become F4.
20 (G.N.) ÷ 5 (shooting distance) = 4 (aperture)

The guide number of the GF-1 (flash amount output) will vary depending on the zoom position. Refer to "Guide Number Table (ISO100)" here.

4. Set a shutter speed slower than 1/250 second with using ADJ. lever of the camera.

note [For GXR users]

By changing the setting with the GXR, it is available to adjust a flash amount from 1/1 to 1/64.

Set the GF-1 as follows, and then control the flash amount by viewing the LCD of the camera.
    • Press Mode select button to set [NORMAL].
    • With the Flash power level select button, set the flash power level to Manual flash output adjustment (the two rightmost flash power level indication lamps on).

manual setting with GXR

    • For manual flash amount control, attach the GF-1 flash unit to the camera in advance.
    • Flash will not fire depending on the shooting mode. In the case, the [Flash Off] icon will be displayed in the upper left corner on the screen.
  • *For cameras other than the GXR, consult to the Camera User Guide.

Slave flash

In the slave flash mode, the GF-1 will fire when it detects the light from another flash. The slave flash function is especially effective in the following situations.
    • When you do not want to illuminate the subject from the front with the main flash light source.
    • When you want the GF-1 flash unit to fire without having it attached to the hot shoe.
    • When the distance to the subject is too far and the flash light cannot reach the subject.
    • When you want to add several flashes to an array.

[! Caution]
    • If the flash does not fire, check the position and the angle of the flash.
    • In the Slave flash mode, if the GF-1 accidentally detects a flash light from the other camera, it may fire before shooting. Confirm charging with the PILOT lamp if the GF-1 is ready for a next flash.

memo [SLAVE1 and SLAVE2]
SLAVE1 : Mode for cameras with a Pre-flash (once) + a main flash(*1)
SLAVE2 : Mode for cameras with a main flash only
  • *1) Type R cameras like GXR, GR DIGITAL III (that has the pre-flash feature)

memo [How to use the pre-flash from the camera as a trigger]

How to use the pre-flash from the camera as a trigger

  • *If you are going to use the built-in flash of the camera as a trigger, do not attach the GF-1 to the hot shoe of that camera. The built-in flash may not able to open.

1. Turn on the camera, and make it ready to use flash.
  • *The Red-eye flash function of the camera is not available.

2. Turn on the GF-1.
    • Press Mode select button to set [SLAVE1].
    • Set the flash power level to Ambient light auto (F2.5 to 5.6), or Manual flash (1/4 or FULL) with the Flash power level select button.
Slave setting

3. Set the aperture in the camera.
The examples below explain about the exposure with Ambient light auto, or with Manual flash.

[When using Ambient light auto]
    • 1.Manually select the aperture on the camera with the Up-down dial to match the aperture value selected on the flash unit.
      If the camera does not offer the exact same value, select the closest value.
      When using a camera unit with zoom (RICOH LENS S10 24-72mm F2.4-4.4 VC, or RICOH LENS P10 28-300mm F3.5-5.6 VC), check the aperture value again after adjusting the zoom and correct the aperture value if necessary.
    • 2.Use the supplied flash stand or other device to place the flash unit at the desired location and adjust its angle as desired.
    • 3.Press the shutter release button of the camera once to check if the flash fires under the conditions selected. If the flash will not fire, verify the position of the slave sensor and the operating distance.
tips After checking the result of a test shot if the image is too dark, choose a smaller aperture value in the camera. If it is too bright, choose a larger aperture value instead.


[When using Manual flash]
    • 1.Use the following formula to select the aperture value.

      Aperture value = Guide No. ÷ Shooting distance

      Example) If the guide No. is 20 and the shooting distance is 5 meters, the appropriate aperture value will become F4.
      20 (G.N.) ÷ 5 (shooting distance) = 4 (aperture)
      Refer to "Guide Number Table (ISO100)" here.
    • 2.If the camera does not offer the exact same value, select the closest value.

[Cameras other than GXR (other than Type R)]

Using the Mode select button, set the flash mode to SLAVE1 or SLAVE2, according to the flash method of the camera. In this case, the Red-eye function of the camera is not available.

Bounce flash

It is a flash usage mainly with indoor shooting to reflect lights from the ceiling or walls without directly flashing to the subject. Bounce flash will be able to reduce hard shadows and result in more natural pictures. Since it could reduce stress to eyes of the subject, it will be convenient when taking a picture of a infant.
    • The angle of the flash head is adjustable upward to 45 ° > 60 ° > 75 ° > 90 °.

[! Caution]
When using Bounce flash, the illumination coverage is fixed at 50 mm.
  • When the ceiling or walls are too far, the reflected light of the flash may not be enough and the bounce flash may not be effective.
  • If the ceiling or walls are not white, the reflected light may be affected, taking their color.
  • If the reflected light is attenuated too much and the bounce flash is not effective enough, try taking another picture with selecting a higher ISO setting on the camera.

[Using Catch light]
When using bounce flash, it is used to add a glint in human eyes. It will work in short distance from a subject and by shining some of the light directly to human eyes. This will be effective at brightening their expression.
  • When you pull the wide panel, the catch-light panel will be pulled out at the same time. Push the wide panel back inside.

Bounce flash

  • When using the catch-light panel, set the flash head upward at a 90 ° and use bounce flash.
 
Answer ID: EDXR01066
Date created: April 12, 2010
Date modified: June 7, 2010
Product: GXR (GR LENS A12 50mm F2.5 MACRO), GXR (RICOH LENS S10 24-72mm F2.5-4.4 VC), GXR (RICOH LENS P10 28-300mm F3.5-5.6 VC)
Operating system: --
Category: Accessories
Was this information helpful ?

Solved my problem
Somewhat Helpful
Followed the advice, but did not help
This FAQ was not relevant

Which model(s) in the FAQ did you search ?

GXR with GR LENS A12 28mm
GXR with GR LENS A12 50mm
GXR with RICOH LENS S10 24-72mm
GXR with RICOH LENS P10 28-300mm

Did you visit the FAQ before or after the purchase ?

Before
After

Please send us your feedback on this FAQ.



In order to protect your privacy, do not include any personal information. The feedback will not be encrypted during transmission. If you would like to have a reply, please contact us here.
Useful LINKs:

Do you need other information? Please click any link you want from the following.

Page Top