Continuity mistake: At the bank, when Kate asks for the bank's key to box 815, she holds her key up in front of her face. In the following close-ups of Kate, the way she holds the key noticeably differs depending on camera angle.(00:34:40)
Continuity mistake: When Kate is in the bank office with her accomplice, Jason puts his right arm all the way around Kate's neck when they kiss, but in the next shot it's gone as his left hand is now on her face.(00:20:05)
Continuity mistake: When Jack and his father begin to have words in the OR, as his father removes his gloves, in the shots facing Jack he stands with both hands on his hips, but in the shots facing his father, Jack's arms are crossed at his chest.(00:07:35)
Continuity mistake: When Claire is writing in her diary, in the close-up the large decorative bookmark hangs down from the book, yet in the next shot, as Charlie walks over, the bookmark is on the other side and under her fingers.(00:04:50)
Continuity mistake: When Boone is tied up with his right arm in front and his left arm at his back, just after Locke leaves, Boone tries to lean over to reach the knife. However, in the close-up of his back, it's his right arm that is tied behind him. The same flipped shot is used later, three more times, when he "hears" Shannon's scream.(00:15:30 - 00:22:40)
Continuity mistake: When Shannon helps Sayid with the French translations, and particularly later when they sit on the beach, she wears a pink shawl which repeatedly changes position - on and off her shoulder and arms, the entire time.(00:20:35)
Continuity mistake: After Kate and Sawyer find the corpses underwater, the marshal's Halliburton case that Sawyer retrieves has two protruding wide silver clasps to the handle's sides, and a thin, narrow handle with flat pivots at its base. The case that Kate tries to steal from Sawyer, and in all the following shots, has a very different style top - NO clasps whatsoever, and it has a round, wide handle with raised round pivots. The Halliburton with clasps is also seen in "Exodus 1" with the airport security officer.(00:06:10 - 00:12:20)
Continuity mistake: When Kate and Sawyer happen upon the lovely waterfall, Sawyer removes his shirt and he has the bandage tied round the stab wound on his upper arm. When underwater, there is a different dressing on his arm; it is snugger, with no ends - most likely an elastic type to stay put during the underwater shots.(00:02:50 - 00:04:15)
Continuity mistake: When Sayid returns to the beach after Jack mentions moving to the caves, he picks up his axe blade down. When he walks off it's blade up.(00:25:45)
Continuity mistake: When Jin comes home, he heads straight for the bathroom and washes blood off his hands. Blood stains on his white shirt change between shots, including one rather large blood stain on his right sleeve which disappears.(00:20:20)
Continuity mistake: When Michael is explaining what happened, the position of the cuffs on Jin keeps changing from by his watch to halfway up his forearm.(00:08:50)
Continuity mistake: When we first see a closeup of Charlie's feet on the beehive he is stood on the actual hive. However the next time we see his feet a few minutes later he's to the side of it so Jack can place the suitcase over it.(00:08:20 - 00:11:50)
Continuity mistake: At the party when Jin and Sun are standing together, Sun place her arms on Jin's shoulders. Her arm's position on the shoulders differ between the shots.(00:03:40)
Continuity mistake: Just before Locke, Kate, Charlie and Jack head off to the cave for water, the strap on Charlie's holdall flips without anyone touching it. Note the metal clip on the strap that is visible in the first shot and not in the second.(00:02:50)
Continuity mistake: When Sawyer asks of Boone, "So how does it feel?" Boone sits with his knees up and his arms crossed over his knees, but in Boone's close-up he sits normally with legs down, arms uncrossed. Then, as Sawyer walks away Boone sits just as in the first shot.(00:40:15)
Visible crew/equipment: When Jack is precariously hanging over the cliff, the thick safety wire attached to the front of Jack's waistband is quite visible in a few shots, as he moves about. One such instance is two shots after Locke says, "Take my hand."(00:21:35)