On the back, the camera still peeks out of the top-left, but the module is considerably larger now and, where it was inset on the fourth-gen iPod touch, it now protrudes slightly -- just over 0.6mm, by our measurements.

ENGADGET: iPod touch review (2012)

The entire camera assembly includes everything you see below, which includes the clear optics (lenses), actuator (second black module from the left), sensor, and the black piece-parts that hold everything together.

FORBES: What's Really Happening At Tessera's DigitalOptics Subsidiary?

First of all, you can't overlook the fact that they've moved to a Cortex A8-based OMAP3530, an appreciable boost from the ARM11 core it replaces, but it turns out there are a whole bunch of subtler changes too, like the inclusion of on-board audio out (pictured above toward the left of the base), HD video out capability through a module, and a second microSD slot.

ENGADGET: Bug Labs' BUGbase 2.0 prototype hands-on Hands-on