Canon included a TTL Autofocus system with the PowerShot A2400 IS, and it has the ability to focus on images as close as 1.2 inches away in Macro mode. The lens housing completely retracts into the camera body when the unit is powered down, and it extends almost an inch away from the body when you turn on the A2400 IS. The 5x optical zoom that Canon included with this camera has a 35mm equivalent range of 28mm to 140mm.
- Normal: 2.0 in. (5 cm) - infinity (W), 3.9 ft. (1.2 m) - infinity (T)
- Auto: 1.2 in. (3 cm) - infinity (W), 3.9 ft. (1.2 m) - infinity (T)
- Macro: 1.2 in. - 2.0 ft. (3-60 cm) (W)
The built-in flash for the A2400 IS, which is located in the upper right corner of the camera (when viewed from the front), is pretty small. However, I found that it works better than expected in low light and better than many similarly priced cameras. The flash has a very limited range of 1.6 ft. - 9.8 ft. at wide-angle and 3.3 ft. - 6.6 ft. at telephoto. You can choose to use the flash in Auto, Forced On, Slow Synchro, and Forced Off modes, depending on which shooting mode you're using. You do have to be slightly careful about the placement of your fingers on your left hand as you're holding the camera so you don't block the light from the flash.
The top panel on the A2400 IS is pretty basic, only containing a power button (just to the right of the ON/OFF label) and the shutter button. The zoom ring surrounds the shutter button, and in playback it controls the Index (Wide) and Magnify (Telephoto) options.
As the A2400 IS has no optical viewfinder, like most point and shoot cameras, you must frame all photos using the LCD. Measuring 2.7 inches diagonally, it's a bit smaller than the screens found on most of today's new cameras. You can select between five different brightness levels, which makes it easy to view the screen outdoors in bright sunlight.
Part of the reason that the LCD screen looks small, is because of the large number of control buttons to the right of the screen. The movie button and the "help" button are near the top of the camera. The four-way controller button is in the middle of the panel, containing the Auto, Macro, Display, and Flash options (in counter-clockwise order). The FUNC/SET button is in the middle of the four-way controller. Unfortunately, because the four-way controller isn't raised away from the camera body and because it's pretty small, it can be difficult to press and use comfortably. The Playback and Menu buttons are at the bottom of the panel.
You can switch between Auto and Live mode using the Auto button on the four-way controller. Once you're in Live mode, you can use the FUNC/SET button to navigate through the various settings features and to make selections.
On the right side panel of the camera is the Mini-B USB port. Canon didn't include an HDMI port with the A2400 IS. The USB port is behind a flexible plastic door that lightly snaps into place. This port also handles standard AV ouput, however Canon does not include any AV cables.
You can use almost any type of SD memory card with the PowerShot A2400 IS, including SDHC and SDXC cards. The slots for the battery and the memory card are behind a hard plastic door on the bottom panel of the camera that snaps securely into place.
Canon shipped a rechargeable Li-ion battery with the PowerShot A2400 IS, as well as a separate battery charger. The charger plugs directly into an outlet, so there's no need for a power cord. The battery is pretty thin, but Canon estimates about 180 shots can be taken per charge, and my tests resulted in numbers very close to that estimate.