What do the different product naming conventions mean?

PixelSquid objects use the following naming convention: 

Site Listing
Diving Helmet object

Download Name
Diving Helmet.H03.2k.psd.zip
Diving Helmet.H03.2k.png 

Unzipped PSD File Name
Diving Helmet.H03.2k.psd

▉ Descriptive Name 
▉ Camera Angle
▉ Resolution