5D Mark iii ai-servo

[DigiDen]

Adds color detection to AF system so it should be better at tracking things if the color is different from the background.

does it work only in "61 points automatic selection AF" ?
or does color detection work in Zone AF and Extended too ?

 

[Dianoda]

How did you get the red focus highlights with Ai-Servo?
I thought this was one of the main complaints with the 5D MK3?
I can't get any to show up with mine

Also, not to hi-jack this thread, but can Ai-Servo be used with single shot as a method of tracking moving subjects?
I think it can.
If so, how does back button focus work in this mode.

I would hope that while depressed, the camera would continue to track the subject and when released focused would be locked?
It's just that without red highlights I'm unable to see this.

Thanks

ET

If the camera is set to focus using the AF-On button and the camera is in AI-Servo AF mode, then camera will continually auto focus using the active AF point(s) for so long as the AF-On button is depressed. But AI-Servo AF never locks like One-Shot mode does, it just continually tracks as long as AF is active, so if you release AF-On and auto focus is only mapped to AF-On, then the camera is no longer auto-focusing - the focus position just stops wherever it is when you let go of AF-On.

 

[Studio1930]

Many times it is the technique used that makes the difference. I have allowed others to use my camera with the exact setup I use shooting the exact same event I am shooting and they often get 50% less keepers due to their technique.

With that being said, here are my often used settings when shooting moving subjects like dogs with a 1DX:

Dark (indoor) conditions:
TV 1/1000s (200mm f/2 usually at f/2 or 2.2)
Auto ISO
AI servo
Case 4
Single point selection with 4 point expansion
AI servo 1st image priority set to equal
AI servo 2nd image priority set to focus

Bright (outdoor) conditions:
AV (200mm f/2 usually at f/2.2 to 4.5)
ISO fixed (usually 50 to 400 ND filter if needed)
AI servo
Case 6
61 point auto switching with first point selected. (used when background is not busy)
ITR on
AI servo 1st image priority set to equal
AI servo 2nd image priority set to focus

 

[chauncey]

FYI...this is going to be live tomorrow and is free if ya pre-register...you would get some clues on your set-up
http://www.creativelive.com/courses/canon-1dx-dslr-fast-start?utm_source=Greengo+Fast+Start%2FCanon+1DX&utm_campaign=103460d7c5-Greengo_FastStartCanon1DX_tomorrow_Jan7&utm_medium=email

 

[DigiDen]

Many times it is the technique used that makes the difference. I have allowed others to use my camera with the exact setup I use shooting the exact same event I am shooting and they often get 50% less keepers due to their technique.

Thanks for more informations, it's helpful.
Few questions
- Have you used 5D Mark III or 1D Mark 4 on dogs? If yes, what was the result in contrast with 1Dx?
- "ITR on" - does it influence on the result?

 

[Studio1930]

FYI...this is going to be live tomorrow and is free if ya pre-register...you would get some clues on your set-up
http://www.creativelive.com/courses/canon-1dx-dslr-fast-start?utm_source=Greengo+Fast+Start%2FCanon+1DX&utm_campaign=103460d7c5-Greengo_FastStartCanon1DX_tomorrow_Jan7&utm_medium=email

Thanks.

 

[Studio1930]

Many times it is the technique used that makes the difference. I have allowed others to use my camera with the exact setup I use shooting the exact same event I am shooting and they often get 50% less keepers due to their technique.

Thanks for more informations, it's helpful.
Few questions
- Have you used 5D Mark III or 1D Mark 4 on dogs? If yes, what was the result in contrast with 1Dx?
- "ITR on" - does it influence on the result?

I still own a 1D4 and use it for dog sports as well. The 1D4 does an excellent job tracking (much better than the 5D series cameras) but the 1DX made my keeper rate go up another 30% I would say. I would still have no problem shooting with the 1D4 for dog sports and often do when I need more reach (crop factor) but if I need high ISO (5000 and up) then I must use the 1DX.

ITR on appears to work well when using the 61 point auto switching when there isn't a confusing background. It would probably work well with those example shots in the first post. It really does track well when you use the first point selected method with 61 point auto switching and ITR on. If you have a black and white dog and black and white objects in the background then all bets are off for auto switching, for example.

I have used ITR to track frisbees being thrown when the background is blurred and mostly green as in that example. It does a great job and only hops off subject every once in a while. Again, my technique made a difference when trying to keep it tracking the frisbees and I had to "learn" things a bit more when I started using the 1DX. I had lots of blurred images at first until I learned to use the right settings and technique.

 

[DigiDen]

Thanx !