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Forums Lobby MASTER YOUR TOOLS - Hardware & Software Nikon Speedlights & Lighting topic #59979
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Subject: "RE: Matrix/CW Metering on SB800 TTl" Previous topic | Next topic
Chris Platt Silver Member Nikonian since 30th Sep 2012Sun 02-Dec-12 07:18 PM
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#20. "RE: Matrix/CW Metering on SB800 TTl"
In response to In response to 4


Newburg, US
          

"I thought the camera and flash talked to each other (with the SB800) in the hot shoe. And that setting parameters on one or the other, limited parameters on the other. In other words, Matrix wouldn't be allowed when in TTl mode. And, correspondingly, TTl-bl wouldn't be allowed if camera metering were to set on Center or Spot."

Your misunderstanding of the camera/flash communication has been addressed several times in this thread and the similar post you made in the D7000 forum. The camera and flash do talk together, but setting parameters on the flash will not change the setting on the camera. That relationship only works one way - the camera settings will change the settings on the flash from TTL BL to TTL, but setting TTL on the flash WILL NOT change the metering mode on the camera - and it isn't necessary.

There are lots of times when you might want to use TTL instead of TTL BL with matrix or CW metering, and you wouldn't want the flash to tell you that you couldn't do it. On the other hand, when you are in spot metering mode, you aren't metering enough of the scene for TTL BL to work, so selecting that metering mode on the camera causes the flash to revert to TTL if you had previously selected TTL BL because the flash couldn't give you a balanced solution anyway.

If you set the mode on your flash to TTL, and you set your camera to ISO 100, Manual exposure, f/9, 1/250, auto white balance, you should be able to achieve the results you want unless the ambient incandescent light is extremely bright. It is possible to get warm ambient light in the background (though it shouldn't be much of a problem at those settings). If warm light in the background is objectionable, you can always gel your flash to match the temperature of the ambient light and then select a tungsten white balance or set a custom white balance that will guarantee there is not warm light messing up your shot.

Trial and error method: Turn your flash off, set your camera on manual exposure and take a shot. Pick any metering mode you want: spot, CW, or matrix. Adjust ISO, aperture, and/or shutter speed until taking a shot produces nothing but a black frame. Leave those settings on your camera, turn your flash on, make sure it is set to TTL and take a shot. I guarantee you that no ambient light will be added to the scene.

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This is a hot, active topic!Matrix/CW Metering on SB800 TTl [View all] , Bravozulu Silver Member, Wed 28-Nov-12 07:14 PM
 
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gkaiseril Gold Member
28th Nov 2012
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blw Moderator
28th Nov 2012
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28th Nov 2012
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Arkayem Moderator
30th Nov 2012
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30th Nov 2012
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01st Dec 2012
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gbowen Gold Member
30th Nov 2012
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Bravozulu Silver Member
30th Nov 2012
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Arkayem Moderator
02nd Dec 2012
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Bravozulu Silver Member
02nd Dec 2012
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John Bertotti Gold Member
02nd Dec 2012
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02nd Dec 2012
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02nd Dec 2012
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Arkayem Moderator
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Bravozulu Silver Member
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Arkayem Moderator
02nd Dec 2012
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John Bertotti Gold Member
02nd Dec 2012
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Bravozulu Silver Member
28th Nov 2012
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John Bertotti Gold Member
29th Nov 2012
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Chris Platt Silver Member
02nd Dec 2012
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03rd Dec 2012
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