This is an advertising project I've worked over 3 weeks and 18+ hours a day for a company based on India. Final PSD file size was 1gb and there were a lots and lots of layers. Original resolution is 70x50 300dpi. It was nearly impossible to work with that size directly on my PCs so I used area render a lot to split the image in pieces also rendered all the elements separately. Second version is a revision based on client' requests.
Tools Used: Vue Infinite (environment and rendering) Cinema 4D (modeling and rendering), Poser (human/animal figures), Zbrush (sculpting the islands on the second version - rendered with C4D), Photoshop (compositing, painting, retouching), and of course my tablet, tea/coffee and lots of patience
PSD Info: 8858 x 5906 pixels. 309 layers. 1021.78 mb on file size.