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Registered: ‎11-13-2012

Re: AI Servo - Number of Focus Points

This is an excerpt from a 1D Mark IV guide by canon, but the concept is the same for all cameras. AI Servo is doing math, and you need to give it a little time to compute.

 

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John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
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Registered: ‎08-13-2015

Re: AI Servo - Number of Focus Points

[ Edited ]

Thanks, John, for that info.  Allowing time for the AI SServo to focus on a subject, is why I have started BBF, instead of trying to hold the button halfway while moving the camera.  That just doesn't flow for me, yet.

 

The issue I have been pondering and experimenting with is how many AF points I should have active during AI Servo.  I seem to get better results with just the center point, out of 9.  I can select my subject better with just one point.  But, it is harder to track a moving subject with just the one point, and I seem to lose tracking altogether.....assuming that I ever got it tracking.

 

I am pretty sure that I only seem to get better "tracking" with the center point, because i can initially pick out the subject better with just one active AF point.  But, it is more difficult to move the camera well enough for it to sufficiently track a subject with one active AF point, which is also dependent upon how much the subject fills the viewfinder.  There are definite too big and too small limits.

 

[SIGH]  You cannot win for losing.  I hope a 6D mark II has AF assist points, and a more sensible DOF button.

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"Doctor told me to get out and walk, so I bought a Canon."
Forum Elite
Posts: 14,316
Registered: ‎12-07-2012

Re: AI Servo - Number of Focus Points

[ Edited ]

"I hope a 6D mark II ..."

"BTW, I am 6'8" and 220 lbs."

 

If anybody I have ever met should get a 1 series it is you.  Your size is a match.  I can't imagine you are comfortable with a Rebel.  Or even a xD series for that matter.  My size and the total lack of being impressed by a 6D was just another plus sign for a 1 series.  If you can't drop the coin on a 1Dx look for a clean 1D Mk IV.  Once you go 1 series, you will never go back. That's a fact, Jack!  IMHO, of course, as always.

EB
EOS 1DX and 1D Mk IV and several lenses!
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Posts: 14,316
Registered: ‎12-07-2012

Re: AI Servo - Number of Focus Points

"I don't see a correlation between using multiple cameras, and "knowing the sport".  Seems to me that is more about knowing your gear, more than anything."

 

OK you must do as you must do.

But it is 100% knowing the sport.  All the rest falls in place when you know what is going on. All the time!  I am sure this is just your lack of experience but I am glad you are trying and hopefully learning,  You will find after a few dozen games how much better or different you shoot and approach it.  You don't learn this stuff on the inter web.  You learn by doing.

 

"You cannot be in two places at once."

Maybe not physically but, yes, you can be in two places at one time?  One eye is looking through the view finder and the other is watching what else is going on.  I even use the LCD as a mirror to look behind me while I am shooting.

 

"You cannot switch quickly enough between different shooting scenarios ..."

You better learn this.  One way is to use two or three cameras.  I know you have not been in the pit because they are not, well lets say gentle with the gear.

EB
EOS 1DX and 1D Mk IV and several lenses!
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Posts: 8,399
Registered: ‎11-13-2012

Re: AI Servo - Number of Focus Points

I use center point with the surrounding points. 

 

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John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
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Registered: ‎08-13-2015

Re: AI Servo - Number of Focus Points

"You better learn this.  One way is to use two or three cameras.  I know you have not been in the pit because they are not, well lets say gentle with the gear." 

 

Me?  In the pit?  HA-HA.  Smiley LOL   No, I've used to be the guy who the ones in the pit have been photographing.  When I told you, "I know Bo.":  I meant that literally, at least in the past tense.  You're very good at manufacturing false premises.

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"Doctor told me to get out and walk, so I bought a Canon."
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Registered: ‎08-13-2015

Re: AI Servo - Number of Focus Points

Thanks, John, for the brainstorms.  I have never paid attention to the tracking adjustments before.

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"Doctor told me to get out and walk, so I bought a Canon."
Forum Elite
Posts: 14,316
Registered: ‎12-07-2012

Re: AI Servo - Number of Focus Points

"You're very good at manufacturing false premises."

 

And you are very good at hiding your persona.  Who or what you are?  Who cares? The inter web allows a lot of anonymity. So anyone can be any thing they can dream up.  I put it all right out there for all to see.  Got nothing to hide.

 

BTW, I knew Bo when he was at Auburn. You may know he played for the Royals.  Smiley Frustrated

EB
EOS 1DX and 1D Mk IV and several lenses!
Honored Contributor
Posts: 5,558
Registered: ‎06-25-2014

Re: AI Servo - Number of Focus Points


@ebiggs1 wrote:

"You're very good at manufacturing false premises."

 

And you are very good at hiding your persona.  Who or what you are?  Who cares? The inter web allows a lot of anonymity. So anyone can be any thing they can dream up.  I put it all right out there for all to see.  Got nothing to hide.

 

BTW, I knew Bo when he was at Auburn. You may know he played for the Royals.  Smiley Frustrated


Who is Bo, and how did he make his way into this conversation? I thought I'd been paying attention, but maybe not.

Bob
Philadelphia, Pennsylvania USA
Forum Elite
Posts: 14,316
Registered: ‎12-07-2012

Re: AI Servo - Number of Focus Points

Vincent Edward "Bo" Jackson.   He played running back for Auburn while my father was at Alabama teaching. Alabama vs Auburn is a state stopping event in Alabama. Nothing is more important than that game.

 

He later came to the KC Royals as an outfielder.  He was a once in a life time athlete. He played football for the Raiders, too. He got hurt which ended a Hall of Fame career for sure.

 

Way, way back before the NFL and American League got to be big business a guy could bring camera gear to the game. No big deal.  Of course now even the photographers pit is a big business deal.  You pay to be there, if you even can. I used to shoot lots of photos at games.  Players even had summer or winter jobs. Regular Joes!  Regular jobs!  Frank White, Hall of Fame 2nd base, for instance worked at Hallmark while I was there.  Cool guy.

 

EB
EOS 1DX and 1D Mk IV and several lenses!
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