AF fine tune is there to calibrate the phase detect system only. It's also absolutely accurate with any lens once it (finally) gets there. Video) because phase detect can't work then. Sometimes, that can just seem confusing but I think they are trying to emphasise they are different.Ĭontrast detection allows you to focus with the mirror up (e.g. Because of the fundamental differences between the systems, Nikon gives different names to the focus modes in Liveview. You can choose different modes for the live view contrast system but, bottom line, none of them are as fast as the phase detect system that operate while using the viewfinder. This system can work out which way to focus without hunting. 3D) further coupled with colour data from the matrix metering sensors. This is the hunting you will see and that's what makes it comparatively slow The view finder system uses a completely different array of 153 phase detect sensors that receives light from the mirrors and that data is, in some modes (e.g. The live view measures contrast of image from the image sensor and spends time shifting lens elements to see if the image is moving into or out of focus. The live view focus system is completely different from the through viewfinder system. The simple answer is that you can't (get it to focus quickly enough in Liveview that is). This would be a huge benefit for new angles that presently I have to intelligently guess. I have tried adjusting the focus points, etc. When I press the shutter release, the camera searches the view area to focus. How can I leverage LiveView to shoot, for instance, a bicycle race at CL or CH? I can't seem to get it to focus quickly enough.
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