After Snow White is knocked out in the woods by the Queen's hunter, he removes the ring from her finger. When Snow White is shown lying on the ground several seconds later, she is still wearing the ring.
When three monster dogs attack Snow White near the bridge, the prince kills one of them, ripping of its head. Then he faces two other dogs. They flee and we see three dogs escaping.
Early in the film, when the Queen enters her bedroom to speak to the magic mirror, she is wearing a dress with a low-cut neckline exposing her bare shoulders.
When the camera switches to behind her left shoulder, showing her view of the mirror, she is shown wearing a different dress with a higher neckline.
The camera then alternates between those two positions, repeating the same error several times.
After the Huntsman removes the ring from Snow White before attempting to kill her, the Beast eats the boot boy and scares the Huntsman away where the camera pans back to Snow White laying on the ground with the ring still on her finger.