How to turn off the built-in flash of the A77 in remote control mode?

Started Sep 4, 2012 | Discussions
greves2
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How to turn off the built-in flash of the A77 in remote control mode?
Sep 4, 2012

Hello,

I would like to use the built-in flash of my A77 to control remote flashes, but not contribute at all to the lighting of the image. The image is taken using a mirror so the built-in flash will be visible and should not be emitting any light in the picture.

Is this possible? If yes, how?

Thank you!

Gabor

Sony SLT-A77
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Bart7D
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to greves2, Sep 4, 2012

It is not possible, since codes in the light burst are used to trigger the distant flash(es).

But the best thing you can do is put a piece of black film (black part of a negative) over the built-in flash. It will dim most of the visible light, while allowing the needed infra-red light to pass and reach the external flash.

Bart

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Cetonid
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Could something like this work?
In reply to Bart7D, Sep 4, 2012

http://www.lightscoop.com/buynow.html

Of course, you would need to have overhead reflective surface like a light colored ceiling.

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Edward Sargent
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to greves2, Sep 4, 2012

Unless you are less than 5ft from your subject the light from the popup should not effect the image as it is at a much lower power in wireless mode (you are in wireless mode?). As others have said you can tape exposed film to the flash or get one of the A-S1 IR Panels http://www.ebay.com/itm/A-S1-IR-Panel-camera-Pop-up-Flash-Sony-DSLR-Cameras-/230844441682

greves2 wrote:

Hello,

I would like to use the built-in flash of my A77 to control remote flashes,

Sony or Minolta remotes?

but not contribute at all to the lighting of the image.

Unless you are less than 5ft from your subject the light from the popup should not effect the image as it is at a much lower power in wireless mode (you are in wireless mode?).

The image is taken using a mirror so the built-in flash will be visible and should not be emitting any light in the picture.

It has to, the Sony wireless remote system works via light pulses

Is this possible? If yes, how?

As others have said you can tape exposed film to the flash or get one of the A-S1 IR Panels http://www.ebay.com/itm/A-S1-IR-Panel-camera-Pop-up-Flash-Sony-DSLR-Cameras-/230844441682 .
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greves2
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to Bart7D, Sep 4, 2012

Thanks. The A55 could do it. I fact that's all it could do. It built-in flash could not be used for fill light because it would control the remote flash BEFORE the exposure. I was wondering if there is a setting to set that kind of behavior.

Thanks agai!

Gabor

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Glenn
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to greves2, Sep 4, 2012

One other option is to set HSS mode. The on camera flash will be entirely finished it's communication and won't be visible during exposure at all. If I understand there is a mirror present in your scene and you don't want the flash seen there? this is the only way to do it besides wired or radio triggers.
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sybersitizen
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to Bart7D, Sep 4, 2012

greves2 wrote:

I would like to use the built-in flash of my A77 to control remote flashes, but not contribute at all to the lighting of the image. The image is taken using a mirror so the built-in flash will be visible and should not be emitting any light in the picture.

Is this possible? If yes, how?

Bart7D wrote:

It is not possible, since codes in the light burst are used to trigger the distant flash(es)...

Yes, it is possible.

greves2 , I assume you are using a fully compatible remote flash that supports HSS. If so, shoot in S or M mode and make sure to set the shutter speed on the camera so that the 'HSS' indicator appears. On the A77 I think this will happen at 1/320s. Then the pop-up flash will never contribute any visible light to the scene.

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Bart7D
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to sybersitizen, Sep 4, 2012

Thanks, Sybersitizen & Glenn - that's a good work-around I wasn't aware of!

Bart

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greves2
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to Bart7D, Sep 6, 2012

Thanks, Sybersitizen & Glenn - that's a good work-around I wasn't aware of either!
I tested it and works like a charm.

Gabor

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Glenn
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Re: How to turn off the built-in flash of the A77 in remote control mode?
In reply to greves2, Sep 6, 2012
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