One of Garmin's big product announcements at the Miami International Boat Show is a new family of three thermal and low-light cameras. The GCT 30,GCT 20, and GCL 20 are all equipped for pan, tilt and zoom. Top of the line GCT 30 high-resolution thermal runs about $14,0000, and its low-res brother, the GCL 20 is priced at $8,995.99. Both allow you to see in total darkness. If that's a bit steep, the GCL 20 offers a low-light camera instead of the thermal imager. It's priced around $4,000. and sized, just over 2.5 pounds, for just about any boat.