Introducing Photo Studio 3 - the next step in mesh lighting. Photo Studio 3 brings four new lighting rigs to give your renders balanced lighting or a dramatic flair. New features for Photo Studio 3 include a newly created gel light and two spotlights. Additionally, each of the light rigs utilizes geometry switching so you can easily change the type of mesh light used in any given scene. Four types of light rigs are included, with position poses, light intensities, shadow intensities, and render quality settings presets for each one. Total customization of each light rig is available in the surfaces tab. Each mesh light also comes as an individual light so you can create your own lighting set ups.
Also included are 45 light gel textures, and 44 new textures for the paper roll, studio and backdrop props.
*Photo Studio 3 (and 1 & 2) relies on the built-in Area Light Shader. Unfortunately, the Area Light is broken in the latest full release of 4.5
A new 4.5 beta with the fixed Area Light in it should be available later this week, with a full version release available next month.
Edit: new 4.5 beta with fixed Area Light here: http://www.daz3d.com/forums/viewthread/7959/
Plus the Area Light still continues to work in DS3 and DS18.104.22.168