I think that it improved the af, which was already xlnt to begin with... the a9 will generally pick the nearest object, but once it selects something, it hangs on even without af lock-on selected. I shot this yesterday, laea3, not even native glass, did not use af lock-on... in...
AF tracking with “un-plan” flying subject. Where I do not have any idea where the bird flying from-to and just use camera reaction to lock focus and track to capture the
Choose whether the camera focuses using single AF (AF‑S) or continuous AF (AF‑C) when a button to which focus lock or AF-ON is assigned is pressed in manual focus mode.OptionDescription AF-S The camera focuses when the button is pressed. AF-C The camera focuses while the button ...
An extraordinarily accurate AF system with 273 phase-detection auto-focus points can tenaciously lock onto and track such fast subjects as moving trains and such unpredictable ones as nimble animals anywhere within the frame. With its powerful high-speed BIONZ X image processing engine and advanced ...
Focus lock and continuous focus can be ended by tapping the AF OFF icon. AREA Tap to select a point for focus or zoom. The focus frame will move to the selected point. OFF Touch controls off . The display does not respond when tapped....
1/2000 F 5.6 Test1 Early morning before light coming in, this bird flying infront of us with noisy call. I manage to move my camera toward this bird and continuous follow and press shutter on this Kingfisher. Total 98 frames captured and 100% focus lock on the bird. ...
The Fast Hybrid AF system, combining high-speed phase-detection AF with extremely accurate contrast-detection AF, allows the camera to lock onto and capture moving subjects in merely 0.05 seconds. Continuous shooting 24fps3 Shoot continuously at up to 24fps3with AF/AE tracking precision ...
} [self.lock unlock]; } 当需要这个后台线程执行任务时,AFNetworking 通过调用 [NSObject performSelector:onThread:..] 将这个任务扔到了后台线程的 RunLoop 中。
AFNetworking是iOS最常用的网络框架,虽然系统也有NSURLSession,但是我们一般不会直接用它。AFNetworking经过了三个大版本,现在用的大多数都是3.x的版本。
[self.lock unlock]; } 上述代码在首先检查了内部的状态,如果处于Ready状态,则在某个线程中执行方法operationDidStart。该线程的创建代码如下: + (NSThread*)networkRequestThread {staticNSThread*_networkRequestThread =nil;staticdispatch_once_toncePredicate;dispatch_once(&oncePredicate, ^{ ...