Depending on your primary photographic objectives, you should plan to cover the areas that are most important to you first by making a list of the images that you would like to get in order of importance. As you work through the list of priorities pack the lenses that are most likely to help you obtain the desired results, weighing your bag as you go. When you begin to reach the limits of the airlines carry on start looking to filter out those lenses that are more “nice-to-have” than essential.
We have written quite a few articles on travelling with equipment within South Africa on our blog. Check them out.
You will want to bring some form of external storage with you because you will be taking a lot of photos! As an example, on our most recent safaris the average disk space used per day was in the region of 20GB!