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Forums Lobby MASTER YOUR TOOLS - Hardware & Software Nikon Speedlights & Lighting topic #61497
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Subject: "Double flash with R1C1 and mirror lock up" Previous topic | Next topic
roypatience Silver Member Nikonian since 18th Mar 2006Wed 15-May-13 11:34 PM
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"Double flash with R1C1 and mirror lock up"


Thousand Oaks, US
          


Does anyone have experience with using the R1C1 flash with mirror lock up mode?

The problem I have is that the flash goes off twice, once when the mirror lock up is activated and again when the shutter is released. I would expect that the flash would only go off once.

I am using the camera and flash for focus stacking, so this is a waste of flash life and battery life.

Any suggestions?

Thanks for the help.

Roy

Camera: D7100
Flash: RiC1
Stackshot for focus stacking



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MEMcD Moderator In depth knowledge in various areas Nikonian since 24th Dec 2007Thu 16-May-13 12:15 AM
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#1. "RE: Double flash with R1C1 and mirror lock up"
In response to Reply # 0


US
          

Hi Roy,

I assume you are using TTL flash control in which case that is to be expected and completely normal.
When you lock up the mirror, the monitor pre-flash sequence fires and when the shutter opens, the triggering flash fires.

Best Regards,
Marty

  

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aolander Silver Member Nikonian since 15th Sep 2006Thu 16-May-13 12:26 AM
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#2. "RE: Double flash with R1C1 and mirror lock up"
In response to Reply # 0
Thu 16-May-13 12:27 AM by aolander

Nevis, US
          

If you use manual flash, this wouldn't happen. You'd have to dial in your flash exposure with your aperture and power level. Also, I doubt that mirror lock up is going to make much of a difference when using flash as the flash exposure is so short. You get a pre-flash and an exposure flash when using TTL without mirror lock up , too, except that they occur nearly together so you don't notice it. The pre-flash doesn't use much power.

Alan

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