Understanding F and E locks

- By default, when you half press the shutter button…your X-T1 auto focuses and meters…then locks those focus and metering settings…beeps at you and flashes a little light…in the viewfinder.…As long as you keep the button pressed halfway…it will continue to hold these focus and metering choices.…While this is a very easy system,…and identical to how every other auto focus…camera works, it does have its drawbacks.…For example, what if you want to focus on the center…of the frame and meter on something…on the right side of the frame?…Or maybe you are shooting a bunch of portraits…of someone who isn't moving they're sitting…there but they are trying different expressions…and you're making slight framing changes…and the camera refocuses every time…you half press the shutter button,…then you're not going to be able to shoot very quickly.…

On the back of the X-T1 are two buttons,…one marked AF-L and the other marked AE-L.…These are the auto focus and auto exposure lock buttons.…By default, they give you some flexibility in your…