There are many times when you may want some one to click a picture of you and your friends from your iphone, so you hand it to some one but in most of the cases when you hand over your iphoe to someone for clicking a photo with camera app already opened, they might just click on the home button which actually closes the camera app.
This happened with me some days back, so I decided to find some way with I could make it possible on my iphone so that I take a photo capture when you tap on the screen. After some research I found out that this cannot be done with iphone default camera app so we found some apps which could help you do capture a photo just by tapping on the screen and they will save the photo in the default photos app under camera roll.
The first we find is called the Fast Tap Camera it comes in two versions one free and another paid version for $0.99 with some extra functionality. The free version does allow take a picture with iphone camera faster by just tapping on the screen.
Fast Tap Camera [Lite Version] is also designed to help you find it very fast on your home screen (red icon) and also to help you know when you can tap the screen for a photo and when you have to wait for the photo to be saved. It helps you take pictures with your iPhone in situations when you need to react fast or when you can not see the camera button.
Second app which is similar to the one we just mentioned, is called OneTapPhoto it is even more faster as it immediately take a photo just when you launch the app and once it has captured the first photo the app will be in ready state so that you can just tap anywhere on screen to take a photo as shown in the image below.
You might be wondering, why this basic feature was never added to the iphone default preinstalled camera app? I think you should better ask apple or wait for them to add this feature in the future update of iOS.