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If Auto ISO is selecting ISO 25600 at f/1.8 and 1/50 seconds, that means the light you are shooting in is VERY dim. It is equivalent to proper exposure for about EV -1. It might not be enough light for the AF system on your D7200 to function properly, particularly if your focus target does not have a strong amount of contrast. Even though the AF system of ...


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Lumixs1DW Yes, I had the same question, I mean how stupid, isn't infinity just infinity, the farthest distance into the future that you can possibly focus on, apparently not. So, Why are you even allowed to wind 2mm beyond the infinity symbol? The logical answer is that if you can wind the lens beyond the infinity symbol, there has to be a reason why. So, ...


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How on-sensor phase detection is accomplished varies somewhat. It can be pixels where the micro lenses are oriented in opposite directions. It can be multiple *pixels under a single micro lens with a baffle between them. And it can be partially masked pixels (but that example image isn't very good IMO). And there's probably some arrangement yet to be ...


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Because PDAF, whether done using the main imaging sensor or using a dedicated PDAF array in traditional SLR cameras with reflex and secondary mirrors, does not focus on a discrete point, it focuses on lines of contrast. If a line of contrast in a scene is vertical, then two different masked photosites¹, one looking left and the other looking right, that are ...


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