picture sizing

I would like to be able to take 4 pictures from different angles of the same thing (jewelry) The distance would be the same for each I need them to have an alpha mask and be exported as .pngs 3 would be exported to a template that measures 764 x 532 and is broken into 3 sections 1 is 498x 532, the second and third are 266x 266 this template would them be saved as a .jpeg the fourth picture is used separately and measures 330x 300