7D AF in AI SERVO (photos included)

Started Feb 4, 2013 | Discussions thread
PC Wheeler
PC Wheeler Forum Pro • Posts: 17,892
Re: 7D AF in AI SERVO (photos included)

TTMartin wrote:

From what I recall Spot AF is NOT recommended for AI servo.

AF expansion should have been fine. What focus mode was used in this series of photos?

Have you made any changes to the AF system in the CnF s?

In the third video there is an in-depth discussion of the Canon 1D MkIII focus system, which the 7D inherited. All 3 videos are worth watching, but, as a minimum watch the 3rd one.

Part 1 of 3: A Look at The Canon Autofocus System

Part 2 of 3: A Look at The Canon Autofocus System

Part 3 of 3: A Look at The Canon Autofocus System

Comments above are right on target. Spot AF, which I use for most shots with no action, is far from the best approach to action with the 7D -- unless you're shooting large airplanes or pelicans

There's also an excellent article on the 7D AF system here:

http://www.learn.usa.canon.com/resources/articles/2011/whats_news_eos7d_article.shtml

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Phil

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