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Author Topic: Canon 1DX ITR AF Feature  (Read 4230 times)

Secretariat

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Canon 1DX ITR AF Feature
« on: January 29, 2013, 10:25:37 AM »
Forgive the ignorance but what is the ITR AF feature in the Canon 1DX all about?Is it true that if it is turned on,it slows down the auto-focusing of the camera a bit?And lastly,when is it best to use this feature and when is it better not to use it?
Thanks in advance.

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Canon 1DX ITR AF Feature
« on: January 29, 2013, 10:25:37 AM »

neuroanatomist

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Re: Canon 1DX ITR AF Feature
« Reply #1 on: January 29, 2013, 11:27:24 AM »
It's face-detection with phase AF.  I find that it works pretty for tracking a person moving through a group.  I have a Servo setting for 'people/events' and I use iTR for that, but not for my wildlife/birds setting.  Note that for iTR to work, you've got to be in 61-point auto selection more for the AF point selection.
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Secretariat

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Re: Canon 1DX ITR AF Feature
« Reply #2 on: January 30, 2013, 12:01:20 AM »
Thanks a lot for your reply.

caruser

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Re: Canon 1DX ITR AF Feature
« Reply #3 on: February 08, 2013, 02:33:55 PM »
It's face-detection with phase AF.  I find that it works pretty for tracking a person moving through a group.  I have a Servo setting for 'people/events' and I use iTR for that, but not for my wildlife/birds setting.  Note that for iTR to work, you've got to be in 61-point auto selection more for the AF point selection.

Is it ok to have only cross-type points selectable?

neuroanatomist

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Re: Canon 1DX ITR AF Feature
« Reply #4 on: February 08, 2013, 03:21:26 PM »
Yes.  Setting 'select cross type points' limits only what you can manually select.  With 4- or 8-pt expansion or 61-pt in Servo, when the camera is picking the AF point(s), it will use both cross- and line-type points.
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Viggo

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Re: Canon 1DX ITR AF Feature
« Reply #5 on: February 08, 2013, 03:38:45 PM »
It's face-detection with phase AF.  I find that it works pretty for tracking a person moving through a group.  I have a Servo setting for 'people/events' and I use iTR for that, but not for my wildlife/birds setting.  Note that for iTR to work, you've got to be in 61-point auto selection more for the AF point selection.

Really? I thought iTR also worked with 4 and 8 expanded, at least the color tracking?
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caruser

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Re: Canon 1DX ITR AF Feature
« Reply #6 on: February 08, 2013, 03:44:15 PM »
Yes.  Setting 'select cross type points' limits only what you can manually select.  With 4- or 8-pt expansion or 61-pt in Servo, when the camera is picking the AF point(s), it will use both cross- and line-type points.
Thanks for the confirmation, I got the 1DX only two weeks ago, and haven't had an opportunity to put all AF modes to a proper test yet.

PS: It was also some of your input that convinced me to get the 1DX, and what can I say, it's great, and I don't miss the 3MP from the 5D2!

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Re: Canon 1DX ITR AF Feature
« Reply #6 on: February 08, 2013, 03:44:15 PM »

neuroanatomist

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Re: Canon 1DX ITR AF Feature
« Reply #7 on: February 08, 2013, 07:59:35 PM »
Really? I thought iTR also worked with 4 and 8 expanded, at least the color tracking?

Nope - 61-pt auto and Zone AF only.  See p.95 of the manual.
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Viggo

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Re: Canon 1DX ITR AF Feature
« Reply #8 on: February 13, 2013, 02:02:55 PM »
Really? I thought iTR also worked with 4 and 8 expanded, at least the color tracking?

Nope - 61-pt auto and Zone AF only.  See p.95 of the manual.

Wow... So I haven't even tried color-tracking at all? That is weird because with the 1dx and same settings as the 5d3 with 4 point expansion the 1dx tracks waaay better, and I'm not sure the 50 L benefits from the higher drive power from the bigger battery...

Does that mean I should turn it off if I never use zone and all 61?
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Re: Canon 1DX ITR AF Feature
« Reply #9 on: February 13, 2013, 02:21:19 PM »
Does that mean I should turn it off if I never use zone and all 61?

No need to turn it off, but if left on it's not doing anything for you...
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Viggo

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Re: Canon 1DX ITR AF Feature
« Reply #10 on: February 13, 2013, 04:23:12 PM »
Does that mean I should turn it off if I never use zone and all 61?

No need to turn it off, but if left on it's not doing anything for you...

Thanks a lot! I was a bit surprised by this, lol. Oh well, the 1dx hardly ever misses anything  for me anyway  ;D
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Re: Canon 1DX ITR AF Feature
« Reply #10 on: February 13, 2013, 04:23:12 PM »