[EDIT] This post was migrated from my blog from 2011…
This is an old comparison between the Preetham and Hosek & Wilkie sky/sun models.
Preetham et al. sky model

Hosek & Wilkie sky model

[EDIT] This post was migrated from my blog from 2011…
This is an old comparison between the Preetham and Hosek & Wilkie sky/sun models.
Preetham et al. sky model
Hosek & Wilkie sky model