The TG-320 features an internal 3.6x optical zoom lens with a 35mm equivalent of 28-102mm. This lens fully operates inside the camera, allowing it to stay sealed when underwater.
Normal Mode: W/T: 0.5m-∞
Macro Mode: W: 0.1m-∞/T: 0.3m-∞
Super Macro Mode: 0.02m-0.5m (Standard only, Flash Off)
To the left of the lens is a small, built-in flash unit. With just the basic modes; on, off, auto and red-eye reduction it will not do anything fancy for you except assist you in lighting your scene. Remember that the flash will not work from as far away if you are shooting underwater, so you will need to stay as close as possible to your subjects.
Framing and viewing your images is accomplished on the camera's 2.7-inch, 230,000 dot LCD screen. With 5 levels of brightness, the screen is easy to see in most shooting situations. When in the water you need to be directly behind the camera because the screen is not visible on an angle.
This is one of the simplest sets of controls you will find on any camera. With just the power button and shutter release on top, there is nothing to get mixed up while shooting.
As with the top, the controls on the back are also incredibly simple starting with the zoom controls on top. Next you have the dedicated video recording button allowing you to record any time in any shooting mode. Directly above the 4-way controller you can see the playback button. The 4-way controller itself is used to navigate the menu system, scroll through stored images, etc. Pressing "Up" changes the amount of info you see on the LCD screen while shooting or viewing your images, "Down" allows you to delete images in Playback mode or in REC mode will take you to the quick menu. The "Left" and "Right" buttons bring up the quick menu in REC mode to change the exposure mode being used. At the bottom you have the MENU and the Camera/Menu guide button.
Hidden under the waterproof cover on the right side of the camera are its two I/O ports. On top is the HDMI output for connecting to any HDTV. On the bottom is a USB 2.0 port for connecting to a computer or SDTV with an optional AV cable.
Although the camera does have a very small built-in memory, you will want to store your images on a SD/SDHC/SDXC memory card. With the camera's HD video capabilities, you will want to have at least a class 4 card for smooth video capture. The TG-320 is shown here with the PNY Pro Class 10, 8GB SDHC card that was used to test it.
Powering the TG-320 is a 3.7V, 740mAh rechargeable Li-Ion battery. Olympus claims that this battery is capable of capturing up to 300 images on a single charge. This is slightly above the average that we have seen lately for an ultra-compact digicam.