I own Nikon D7000 with 18-105mm lens. I am bit confused how the auto focus and manual focus switching works, particularly with my gear. The confusing part is both the camera and lens have an A-M switch.
I am not sure if when I have to switch to manual mode I need to shift both the buttons, on lens as well as camera? And do I have the liberty to fine tune the focus by turning the focusing ring while both camera and lens are on "A" position? Will it cause any damage to body or lens?
Here are the excerpts from lens manual:
"Manual focusing is possible even when the lens A-M mode switch is set to A. Set the camera’s focus mode to AF-S, and press the shutter-release button halfway to initiate autofocus. Next, while pressing the shutter-release button halfway, manually rotate the lens focus ring to fine-tune focus"
But that doesn't clear it up for me.
Answer
If you want to manually focus, best to set them both to M
it tells the body not to try to AF, and also will allow you to take an image even if focus isn't perfect
it tells the lens that you are manually focusing, so will allow the focus ring to turn freely
pressing the shutter release will not attempt to focus the lens in any way
If you want to use AF, set both the lens and body to A
- however you can override the focus as described in the manual. Half-press to have AF lock in focus, then while still holding the shutter release halfway, you can turn the focus ring and adjust focus. So it's not pure manual focusing, it's just an override that might come in handy on occasion, but if you want to manually focus, set both switches to M
Having the body on M and lens on A doesn't make sense. Neither does body on A, lens on M really (but see comments), so I'd recommend you just set them both the same.
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