Original sentence: Except for a small amount of extremely hard-to-obtain footage, the series was originally filmed entirely in high definition  and so is viewed to its best advantage on those releases.However, the latter omit the extra disc of bonus features that is present on the standard-definition boxed set.Regardless, all iterations of the series on home video have sold extremely well: as of June 29 2007, the HD DVD and Blu-ray sets ranked twelfth and fourteenth, respectively, on Amazon.The bonus features include Planet Earth Diaries (ten minutes of behind-the-scenes footage for each episode, as on their original broadcasts) and Planet Earth: The Future, the three documentaries as detailed above.com's DVD Bestsellers List, while the DVD boxed set was at number one
Edited sentence: Because the series was originally filmed entirely in high definition, except for a small amount of extremely hard-to-obtain footage, that is the ideal way to view the episodes.However, there is one significant drawback to the high-definition releases: they lack the extra disc of bonus features that is present on the standard-definition boxed set.Regardless, all iterations of the series on home video have sold extremely well; as of June 29, 2007, the HD DVD and Blu-ray sets ranked twelfth and fourteenth, respectively, on Amazon.The set’s bonus features include Planet Earth Diaries (ten minutes of behind-the-scenes footage for each episode, as on their original broadcasts) and Planet Earth: The Future, a set of three features totaling 150 minutes that focuses on the planet’s ecological future and human effects on it.com’s DVD Bestsellers List, while the DVD boxed set was at number one