My rule of thumb #1 for conditions like this is to never go below 1/100 in your shutter speed. You MIGHT be able to hold your camera still enough to shoot with slower shutter, but keep in mind that your subject will also move. 1/125 is safer.

Use this as your starting point and adjust ISO and aperture based on this. Depending on your camera, ISO800 may be fine (with a Canon 7D, you could even get away with ISO3200 without too much noise!). If your camera is OK with high ISO, let the aperture be your last adjustment. Going as wide as 1.4 gives you so narrow depth of field that you risk large parts of your subject being out of focus because it is outside the depth of field rather than because of motion blur.

Also, be sure to shoot in RAW, as this enables you to underexpose at least one (sometimes as much as two) stops, which you can “bring back” during post-processing.

Lastly, set your camera to continuous mode and shoot 3-4 frames of every shot. Chances are one of them will be sharper than the others.

I hope these tips will be helpful in your next low-light session! And DO practice it in situations where you don't really need the photos

I've got a 50mm 1,4 lense, but I find it so hard to shoot good photos indoor They are out of focus and far away of what I expected the 50mm lens could do. Need more hints and ideas on how to use it

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