Exposure Lock Button

[Albert2]

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I don't think this facility exists on my newly acquired X2 but want to check this is so please? On my M I scan the scene and press the shutter to get an exposure after manually focusing and seem to get it right whatever the metering is set to. On other brands of camera there is often an AE lock facility. Do I need to apply the same thing as my M please?

[wda]

Albert, for ultimate exposure control practise using Manual settings. The advantage is that you can also incorporate EV adjustments at the same time. If in a hurry, one or more automatic settings requires a half release pressure before settling on a chosen framing. If a locking button exists, I rarely use it for ergonomic reasons.

[Albert2]

Thank you. I don't usually use for manual settings. The problem with pressing the shutter button halfway is both the exposure and the focal Point are fixed. Recomposing the picture would result in the correct exposure but the focal Point would be in the wrong place.

[wda]

For an experiment try setting exposure manually, aiming your camera to a representative area of your subject. Now forget about exposure. Frame your subject and select one or multizone where you want the sharpest focus. Half pressure,quickly reframe if needed and shoot.  Success!

Once manual exposure has been set, it needn't be changed in an constant lighting situation. So just concentrate on subject selection and focus. If necessary, tweak exposure manually while checking the histogram.