When you restore log you can chose state of database after that :

RECOVERY – Leave the database ready for use by rolling back the uncommitted transactions. Additional transaction logs cannot...

You can set up state of database after restoring log in LS , if you would like to have read only database , then you use standby model or...

In what state you leave database after restoring log - standby or no recovery?

If you have standby, change to no recovery,that will speed up process of restoring logs, no undo...