Manual Mode. In manual mode, by default, the shutter speed is the selected setting to be changed. To change the aperture you have to hold down the Av button on the back of your camera. Shown in the red circle below. With the Av button held down, you are able to roll the index finger dial and change the camera’s aperture. New to Canon as my 6D MK2 is my first Canon and only had since Xmas. Having real problems with my photo's being less than satisfactory.I just cant get anything crisp . example as below,settings are. ISO-160. F5.6. 1/400 - Aperture priority mode. single focus point and on auto. subject about 4Metres away with Canon 100-400 lens set to max. If you have the same camera and lens as I - a Canon 6D Mark II with a Sigma 120-300mm f/2.8 Sports - you are in luck; I have already done the work for you! You can set the settings to +10 on the Wide (120mm) end and +14 on the Telephoto (300mm) side. EF 70-200 2.8 L IS II USM focus not working in EF & RF Lenses 12-22-2023 Is it possible to release shutter without lens on Canon Rebel Eos T2i in EOS DSLR & Mirrorless Cameras 12-21-2023 EOS R8 how to turn off silent shutter in EOS DSLR & Mirrorless Cameras 12-17-2023 In order to make full use of the Focus Pyramid, a camera should be used that allows for user-input lens and autofocus calibration settings. Examples of compatible cameras and some lenses include: Canon EOS 50D, 70D, 7D, 6D, 5D Mark II, 5D Mark III, 1D Mark III, 1D Mark IV, 1Ds Mark III, 1D X, 1D C of the photographic settings is needed. Additionally I will look at the settings in depth in this section and explain what the various settings do to the images that you take. I will take a look at a few of the basic overrides that the camera offers and how they can be used to produce better images. C.Fn II Autofocus. Option 1: Tracking Sensitivity. Set it to “Locked on” Option 2: Accel./decel. Tracking. Set it to “0” Option 3: AF pt auto switching. Set it to “0” Option 4: AI Servo 1 st image priority. Set it to “Release” Option 5: AI Servo 2 nd image priority. Set it to “Focus” Option 11: Initial AFpt, [] AI Servo AF Setting Details: Shutter button or [ ] button [AF/AE lock] Enable exposure lock by pressing the [ ] button, after focusing by pressing the shutter button halfway. [AE lock/AF] Enable exposure lock by pressing the shutter button halfway, and focusing by pressing the [ ] button. [AF/AF lock, no AE lock] Enable focus lock by pressing the [ ] button. OafT.