Domino Depth of Field

This was purely an exercise in photo stack to att empt to get depth of field sharp throughout the image but it has quite come off as the pair of dominoes which are furthest away are not quite sharp. As it was done by blending twenty two images and took a good ten minutes or more in photoshop to stack and resize the images I think I will be experimenting will smaller RAW files in future. The image with all its twenty two layers was 4.3 GB in size and my computer has yet to recover from its exertions.