01 September 2017

Canon EOS 7D Mark II Zone AF and AF Point Expansion Options

Understanding the Canon EOS 7D Mark II Zone AF and AF Point Expansion Options
Canon EOS 7D Mark II - Zone AF Selection
Understanding Zone AF and AF Point Expansion Options
The advanced Autofocus System of the Canon EOS 7D Mark II could be significantly challenging for new and experienced photographers keen to master its AF area selection options.

Canon EOS 7D Mark II’s AF Area Options defined / explained
  • Single-point AF 
  • Spot AF 
  • AF Point Expansion (4 Points) 
  • AF Point Expansion (8 Points) 
  • Zone AF 
  • Wide Zone AF 
  • Automatic AF point selection 

Official Canon Article by Rudy Winston from Canon USA

Difference between Zone AF and AF Point Expansion

Download Canon EOS 7D Mark II DSLR AF-Settings PDF Guidebook
Canon EOS 7D Mark II DSLR AF-Settings PDF Guidebook

Image Credit: Vernon Chalmers Canon EOS 7D Mark II / EF 400mm f/5.6L USM Lens


Canon EOS 7D Mark II - Birds in Flight Photo Gallery

Canon EOS 7D Mark II : Automatic Selection Autofocus Testing

Canon EOS 7D Mark II : Wide Zone Autofocus Testing

Focus Stacking in Macro and Close-Up Photography

In Macro and Close-Up photography we are challenged with a very narrow Depth of Field (DOF) in creating a sharp image (and providing for more and / or less out of focus areas). In order for extending the DOF across the image image or part of the subject(s) in the frame photographers use focus stacking for achieving a more desired / sharp result.

Stacking is a technique of taking a few images at different focus points of the same subject(s) and then merging the images in a software program.

Stacking is not limited to Macro lenses and can be done with any lens - it is also useful in landscape photography.


Focus Stacking Example

I've done a quick example to show one image in the stacking sequence (21 images) and then the final merged image. Stacking is very popular for individual subjects i.e. flowers or other smaller / still subjects for increasing sharpness across the subject / frame.

Image One: (image 1 of 21 images) I focused on the middle crayon's tip at f/8 (notice the blurriness of the rest of the crayons), and eventually captured 21 images focusing on different areas of the crayons at the same aperture.

Image Two: the result of the 21 merged images creating a shaper image across the frame (which will not be possible even if I used f/16 + at the distance / magnification I was shooting at).



Focusing: I used the Canon EOS 6D / 100mm Macro lens in AF / Live View mode and captured all 21 images at different focus areas.

Please note: in many cases we want out of focus areas for highlighting a specific part of the subject.

Canon Equipment Used


  • Canon EOS 6D
  • Canon EF 100mm f/2.8 USM Macro Lens
  • Canon Macro Ring Lite MR-14EX II flash

Stacking Software used: Zerene Stacker V1.04



(Click to Enlarge)
Focus Stacking in Macro and Close-Up Photography
Image 1 : One Image in the Stack


Focus Stacking in Macro and Close-Up Photography
Image Two : Merged Image in Zerene Stacker