AF performance has been improved in a number of keys areas. The fast and accurate phase detection AF now covers a larger part of the frame and has been optimized in the area where users are most likely to position the main subject. At the same time, the FUJIFILM X-T2 boasts significant focusing improvements on small highlights, low contrast subjects and subjects with fine textures, which have previously caused problems for focal plane phase detection AF. Contrast detection AF, which excels in low light conditions, has also received a performance boost, with the ability to accurately focus in light levels as low as -3EV. The camera also refocuses more regularly during the slow burst mode in AF-C.
The phase detection area has been expanded by approx. 230% compared to previous models, with the number of focus points increasing from 49 to 91 (up to 325). The camera also activates phase detection AF more frequently to take advantage of its AF speed and accuracy in a greater variety of situations.
The AF algorithm has been improved to boost the camera's ability to capture subjects that have previously caused problems for phase detection AF. Subjects with delicate textures, such as bird feathers, can now be focused on quickly and precisely.
Choose Face Detection to automatically detect human faces, or turn on Eye Detection AF to automatically detect and accurately focus on human eyes for successful portraits with a shallow depth of field. You can also define the area of priority focus, for example right or left eye, or the eye closer to the camera. These functions have been upgraded for improved accuracy to a level that will impress professional photographers. They are particularly effective when shooting with the XF56mmF1.2 R / XF56mmF1.2 R APD or XF90mmF2 R LM WR lenses.
The FUJIFILM X-T2 has a variety of functions that assist pinpoint focusing in the MF mode. Set the Focus Mode Lever to MF and rotate the focus ring to access a variety of MF Assist functions. These include Focus Peaking, in which color is used to show the parts of the image that are in focus, and Digital Split Image, where focus is achieved by lining up the split image strips in the center. These features are particularly useful in macro photography and portraiture, which involve a shallow depth of field and require focusing precision.
The focus area can be changed in eight directions using the FUJIFILM X-T2's Focus Lever: up/down, right/left and diagonally. This allows users to make quick changes to the focus area for accurate focusing after composing an image. This feature is useful not only to shift the AF points during autofocusing, but also to quickly choose the area to be enlarged in MF Assist mode during manual focusing.
Fujifilm has substantially improved the AF-C algorithm to boost the accuracy of the FUJIFILM X-T2's ability to track moving subjects. You can now fine tune how the camera reacts to the way the subject moves within the frame, how fast the subject moves and where in the frame the camera prioritizes focus. The five presets in the AF-C Custom Settings represent combinations of these three factors.
This setting allows you to specify whether the camera should switch its focus to a different subject or retain its focus to wait for the subject to reappear. This control is useful when the object you are tracking disappears behind an obstacle, goes out of the frame or when a second object at a substantially different distance from the subject comes into the frame, Selecting 0 makes the camera switch its focus immediately, while choosing 1-4 progressively lengthens the time it will retain focus.
This setting defines the camera's tracking characteristics based on changes to the subject's speed. Selecting 0 (constant speed), the camera does not consider change of speed when predicting subject movements. Choose 2 (variable speed) and the camera takes speed changes into account when predicting subject movement, making it suitable for accelerating or decelerating subjects.
This setting is available only in the Zone AF mode, and allows you to specify which part of the selected focusing zone should be given focusing priority. Select CENTER to maintain focus in the center of the frame, or FRONT to switch the focus to a subject at the front of frame when the original subject moves out of shot. AUTO tracks the subject you first focused on.
The AF-C Custom Setting allows you to select one of five AF presets according to the subject's movements to obtain perfect focus tracking. Based on how the subject moves, you can select a preset from, for example, Preset 2: Ignoring obstacles, Preset 3: For subjects that accelerate / decelerate, Preset 4: For subjects that suddenly come into the frame or Preset 5: Subjects with erratic movements to obtain optimum settings for accurate subject tracking. A combination of three factors: Tracking sensitivity, Speed tracking sensitivity and Zone area switching, may be manually set and registered as Preset 6: Custom.
|Tracking Sensitivity||Speed Tracking Sensitivity||Zone area Switching|
|Preset 1: Basic||2||0||AUTO|
|Preset 2: Ignoring obstacles||3||0||CENTER|
|Preset 3: Accelerating / decelerating subjects||2||2||AUTO|
|Preset 4: For subjects that suddenly come into the frame||0||1||FRONT|
|Preset 5: Erratically moving subjects||3||2||AUTO|
This is a standard setting for moving subjects in general. It is used by default when there is no specific AF-C Custom Setting selected. This is closest to the AF-C setting on previous models.
Suitable when objects other than the subject enter the focusing area due to the subject going out of the frame or obstacles obscuring the subject.
The perfect setting for subjects whose speed of movement changes significantly. It is particularly effective when using a lens featuring a linear motor for high-speed focus tracking.
Allows the camera to instantly focus on a subject that comes into the focusing area, with priority given to objects closest to the camera. It is ideal for subjects that suddenly appear in the focusing frame.
This is suitable when subjects are moving at varying speeds in different directions, coming in and out of the focusing area. It is perfect for shooting field sports, etc.
Manually create a preset optimized for the specific movement characteristics of your subject. You can adjust subject retention level, acceleration / deceleration level and zone area priority to your preference, then save them using this preset.
The new AF system incorporates a number of new technologies.