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| p.6 #8 · p.6 #8 · Oh, AF-ON... where have you been all my life? |
Ignoring the needless insults and rude commentary, I'll add my 2 cents.
I rarely use the AF-On button, mainly because it wouldn't activate VR. After a few decades of photography, I've grown accustomed to doing the half press, which does activate VR, which I find very useful, especially when trying to track moving subjects.
Using both the AF-On and shutter release buttons, requires a certain level of manual dexterity and the ability to do different things with different fingers on the same hand. That can cause issues, such as not smoothly releasing the shutter. Given enough time and practice, I suspect that most folks could learn to overcome that and other issues.
I recognize that there are certain situations in which using AF-On could be beneficial to the user. Those times are usually when I take the time to move focus to the AF-On button, for my own use, if I have the time to do so.
Otherwise, for the vast majority of shoots, I see no problem not using AF-On. I am not a fan of focus and recompose and only do that when I have no other choice.
None of this means that others are wrong for using AF-On. As I see it, it's a personal preference thing. The fact that many "pros" use it, means that they handle their cameras enough that they've learned to use it to their advantage, meaning that they don't have to stop and change the settings like I do. Perhaps they don't care that VR isn't activated by the AF-On button on most bodies. Again, that's a personal preference.
Personally, if all of my bodies activated VR with the AF-On button and I could then make the shutter release button more sensitive, easier to fire, then I'd probably change my habits. Until then, I'll continue to use the shutter button for the majority of my shooting. It works just fine for me. I certainly don't think that others should follow my lead.
It's not a right or wrong thing, IMO. Like most anything else in photography, use whatever technique works best for you.