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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 09 Feb 2014 (Sunday) 16:32
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Canon 1DX Auto ISO question

 
N2bnfunn
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Feb 09, 2014 16:32 |  #1

I have a Canon 1DX with the new 2.03 firmware and I have notice when using the Auto ISO it works great, but when I attached my flash the auto ISO is not working correctly, I am using an Canon 580 EXII flash I have try using in Manual mode and ETTL but either mode the auto ISO will not work correctly?


Is there something in the setting that I must enable to disable?


Canon EOS R EF 70-200 L 2.8 L 24-70 2.8L II Canon Pixma PRO-1 3 Canon 600EX-RT Speedlites

  
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jase1125
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Feb 09, 2014 18:02 |  #2

It is expected. In auto ISO, the camera will select ISO 400.


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rrblint
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Feb 09, 2014 22:45 as a reply to  @ jase1125's post |  #3

Auto ISO always chooses ISO 400 unless you are using bounce flash in P mode, where it will go higher.


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N2bnfunn
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Feb 09, 2014 22:47 |  #4

rrblint wrote in post #16677472 (external link)
Auto ISO always chooses ISO 400 unless you are using bounce flash in P mode, where it will go higher.

I am not following you, are you talking about in the New Firmware 2.03 on a 1DX ?


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rrblint
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Feb 10, 2014 00:08 |  #5

N2bnfunn wrote in post #16677483 (external link)
I am not following you, are you talking about in the New Firmware 2.03 on a 1DX ?

Any firmware on any Canon DSLR.


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apersson850
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Feb 10, 2014 01:53 |  #6

N2bnfunn wrote in post #16676650 (external link)
...but when I attached my flash the auto ISO is not working correctly...

Oh yes it is. Since flash metering in E-TTL is done at the moment just prior to exposure, you can't know which ISO would be appropriate until you're taking the picture, and then it's too late to change it. If the camera did change it at this moment, then your previous setup for the exposure of the ambient light would be void.

Likewise, when using manual flash, you must have a known and consistent ISO value to set your manual flash power against, or you'll be completely lost about which power level to use.

Don't be sad know. A lot of Canon users seem to belive that the auto ISO when using a flash isn't working, so you are in good company. Some even think it's Canon's engineers that are stupid. But it's working the way it should, and the reason that most people think it's not is in this case just that Canon's engineers thought about this a bit furhter.


Anders

  
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Canon 1DX Auto ISO question
FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
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