According to DZOFILM, if you have a camera and the nice, easy-going security guard at the entrance didn't turn you back, you have an accreditation, and so if the world is going smoothly you don't need my help. advice there.

But hey, let's admit, it's just to put the picture down, it also works if you try to photograph granny rock dancing in the living room on a New Year's Eve (even if she smells more of champagne and patchouli than beer and sweat, but let's move on).

In short, you have a fast subject whose movement you want to freeze. You place yourself in speed priority, let's say at 1 / 150th. At the first touch of the shutter release button, the small "f / 2.8" flashes everywhere.

There, you increase the ISO until it stops flashing (in this case you will have a good exposure), or then up to the maximum acceptable sensitivity (ISO 1600 for example). If it keeps flashing, you can still take the picture, but it will be underexposed. It can be made up if it's not too bad, but not if it's pitch black.