iPhone 4 Camera Zoom

How to use the iPhone 4′s camera

How to use zoom
The iPhone 4′s camera features a 5x digital zoom. To zoom into a shot, press the volume up and down keys to zoom in or out of a picture.

Alternatively, an on-screen zoom slider will appear if you tap anywhere on the display.

How to use tap-to-focus

Although the iPhone’s 5-megapixel camera features auto-focus, you can also choose what to focus on using tap-to-focus.

Tap the iPhone’s screen to find your focal point, such as a person in the background rather than the foreground.

A green box will appear to confirm that point has ben selected and is now in focus.

This method also automatically adjusts exposure and white balance.

How to use the flash
Although the iPhone 4 features an illumination sensor to automatically sense if there’s enough light to take a photo or not, you can also manually switch it on by tapping on the flash icon that appears in the bottom left of the iPhone 4′s screen in landscape mode, or top left in portrait mode.

How to use the secondary camera
The 5-megapixel camera is set as the default camera, but you can switch to the VGA camera on the front by tapping the camera switch icon.

This is situated in the top left if you’re in landscape mode, or top right in portrait mode.

How to switch to video mode
Along the bottom bar of the iPhone’s camera screen, you’ll see a slider to switch to video mode.

Simply swipe across to activate it.

How to share photos
You can share photos direct from the camera app on the iPhone 4.

Once you’ve taken a photo, tap the share icon and you’re given the option of emailing a photo, sending it by MMS, sending to MobileMe, Assign to a contact or use as a wallpaper.

Tap on one of these options and your photo will be sent to a friend or a service along with geo-location data if enabled.

additonally, you can add on lens for iphone for the dSRL capability of the iPhone 4.