7d auto iso question

[freefall]

Hi all,

I've recently been shooting more and more on manual and sometimes need to use auto ISO if time is short. Especially shots of my kids.

In certain situations I focus on my kids faces (which are bright) then recompose for a better framed shot. However if i recompose whilst keeping the shutter half way down then the auto ISO increases or decreases depending on what is in the background. I am using the centre AF spot most of the time.

Is there any way I can lock the auto ISO exactly how I first composed the shot before moving the camera about and it changing the ISO.

 

[whitewash]

doesnt one of the back buttons for your thumb second one in with the * next to it lock the exposure? which would then lock the auto ISO

 

[freefall]

Will try that when I get home. Wasn't expecting such a quick response. Thanks

 

[whitewash]

i've just tried that on my 50D and it locks all exposure settings once the exposure lock button is pressed.

one of the custom functions will also allow you to move it to the half pressed shutter button as well id have thought so when you half press the shutter it focuses and locks the exposure allowing you to recompose

 

[freefall]

I'll certainly have a try of that. Hope it locks the auto ISO too