07-20-2019, 11:11 AM
I still think, measuring the shutter lag is a usesless game and I'm very skeptical to believe the values because I have no idea how they measured. I will keep on having no idea because in real life it doesn't help. So I also will not investigate how they measured as I'm sure it will throw up new questions.
What good it is to know a certain amount of shutter lag, if AF has problems to catch focus and I set the camera to focus priority? The Z 7 0.215 = 1/5 s. If I set the camera shutter to mechanical, the time between shutter "open" and "close" feels longer than the shutter is reacting. An using AF-ON makes also a difference when in AF-C mode, because the camera already catched a target before I press the shutter. In any way, it really doesn't matter that much: If the lab which was measuring the times chose a good enough setup (I think of lights on DC or AC current, with lens or without and if with: with which lens?)
Also Tony Northrup's (who was wrong in the past and has some opinions I not necessarily agreee with) video put at the moment of the "shutter lag numbers are..." a text balloon to his mouth saying "in AF-C". AF-C can be a lot these days: With/without face detection? eye-AF? animal or human eye? object tracking? how big the AF-zone? and lastly how good the lights and how fast the lens...
That value might be accurate for one single test situation, that situation will happen statically so the meaning to camera's behaviour in real life is zilch or very close to it. What also comes in my mind: Nikon states in their manual to only use AF-fine-tuning if one has to, otherwise it might slow down the AF. How many lenses I have which would allow me to switch the AF fine-tuning results of? Exactly one, the new Sigma 70-200/2.8 Sports was to my surprise perfect out of the box.
Maybe there's not much to read about shutter lag because you get used to it and compensate it by just pushing the button earlier. As EACH camera does have a lag, a photographer already needs to anticipate that delay. No one will ever be able to convince me by saying "with my XY body and a Z-lens I can catch a swallow in flight, while it's looking to the left side, wings spread to the max and catch a bug in mid-air". It can be done - but not on purpose.
What good it is to know a certain amount of shutter lag, if AF has problems to catch focus and I set the camera to focus priority? The Z 7 0.215 = 1/5 s. If I set the camera shutter to mechanical, the time between shutter "open" and "close" feels longer than the shutter is reacting. An using AF-ON makes also a difference when in AF-C mode, because the camera already catched a target before I press the shutter. In any way, it really doesn't matter that much: If the lab which was measuring the times chose a good enough setup (I think of lights on DC or AC current, with lens or without and if with: with which lens?)
Also Tony Northrup's (who was wrong in the past and has some opinions I not necessarily agreee with) video put at the moment of the "shutter lag numbers are..." a text balloon to his mouth saying "in AF-C". AF-C can be a lot these days: With/without face detection? eye-AF? animal or human eye? object tracking? how big the AF-zone? and lastly how good the lights and how fast the lens...
That value might be accurate for one single test situation, that situation will happen statically so the meaning to camera's behaviour in real life is zilch or very close to it. What also comes in my mind: Nikon states in their manual to only use AF-fine-tuning if one has to, otherwise it might slow down the AF. How many lenses I have which would allow me to switch the AF fine-tuning results of? Exactly one, the new Sigma 70-200/2.8 Sports was to my surprise perfect out of the box.
Maybe there's not much to read about shutter lag because you get used to it and compensate it by just pushing the button earlier. As EACH camera does have a lag, a photographer already needs to anticipate that delay. No one will ever be able to convince me by saying "with my XY body and a Z-lens I can catch a swallow in flight, while it's looking to the left side, wings spread to the max and catch a bug in mid-air". It can be done - but not on purpose.