Tag: auto focus
More Canon 7D Auto Focus Goodies
by Lee on Aug.18, 2010, under Articles, Composition, gear
Spot and Expanded AF Points
These two features seem diametrically opposed in terms of usefulness. Spot AF is an extra small AF Point inside a normal AF Point while AF Point Expansion increases the size of the AF Point by selecting points around it.
As seen in the above left photo, Spot AF uses a smaller area inside the normal AF Point. The actual Spot AF Point is actually a bit larger than the small box but stll smaller then the large box (did I just write that?).
As you can imagine, that tiny AF area can be handy for macro photography. How many times have you tried to focus on a very tiny detail but couldn’t be sure you got it until the photo was on the screen? Click to read more
Canon 7D Auto Focus Features
by Lee on Aug.16, 2010, under Articles, gear, Monday Morning Tips
Getting the Best Out of Your Canon 7D Auto Focus
The Canon 7D has turned out to be one of the most capable Canon mid-range dSLRs ever. It’s not just new, it’s revolutionary in mid-range dSLRs. It has so many new capabilities that it’s difficult to pick just one or two as my favorites. One feature I apprecate the most is its new AF system.
Anyone who keeps up with things dSLR knows about the new 19-point AF system. Compared to the older 9-point system, 19 points is a huge improvement. It allows precise selection of just the right AF point for just about any scenario. If that were the only improvement, it would be big but Canon didn’t stop there.
My personal favorite new feature within the 19-Point AF system is the new Zone AF. Click the image below to see the different zones that can be selected.
Using the standard Canon AF Point Selection button on the back top right and the new M-Fn (Multi-Function) button, I can cycle through all the AF Area Selection Modes I’ve enabled. Yes, you heard that correctly. I can choose which of the 5 AF Area Modes to enable so I don’t waste time cycling through unneeded modes.
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