Aporte original por: Dan ,
You could be facing a few different issues: Not enough light/ISO setting not sensitive enough - Here you'll need to add some light and/or alter the ISO setting to a higher number. Altering the ISO can degrade the image a bit if you go too far. Slow shutter speed - People moving will appear blurred try increasing the sped. But be careful you may encounter loss the depth of field. Mis-focus - The auto focus is not aimed at the best location before you compose your picture.