This is commonly called an acrylic photo print. Typically, the image is printed and mounted to the back of an acrylic sheet, or printed directly onto the acrylic and then sealed with a white backing layer.

The look in your example is mostly about image editing and subject isolation, not a special camera feature. You can create it by photographing the subject cleanly, then removing the background in post-processing or shooting against a very dark/controlled background.

For resolution, there is no single megapixel requirement tied specifically to acrylic. It depends on the final print size and viewing distance. Large wall prints can often be printed successfully at lower pixels-per-inch than small hand-held prints because they’re viewed from farther away. In general, use the highest-quality original file you have and size it appropriately for the lab’s recommended print dimensions.

So the key pieces are:

• print type: acrylic photo print
• effect: background removal / isolation
• resolution: based on print size and viewing distance, not the acrylic itself