Attached Link: Curious Labs/Poser 5 Spotlight Q & A

According to the RDNA Q&A session with CL (Ref the link):

"1.Larry, will CL be increasing resolution above 2500 in the face room?

The textures that we acquired for the facial variations were limited to 512k. Because of this, some of the internal functionality of the face room including the photo lineup was also written to work only at 512k. We probably will not be updating this until future versions of Poser. You can still generate textures in the face room and then export them and paint them at a higher resolution and use them in Poser. Then, the face room can still be used by updating shape only."