HDR On the Evo 4G - How to take HDR Photos on the Sprint HTC Evo 4G - Android HDR App
What is HDR?
HDR or High Dynamic Range Photography is a photographic process which combines multiple photographs into a single image with an increased range of tonality.
In the real world everything is not perfectly lit and when you take a picture you camera has to chose between over exposing or under exposing different parts of the image. For example if you take a picture of a friend outside on a bright sunny day your camera may properly expose the photograph to show your friend, but the sky in the background will be blown out and completely white with no detail. If we wanted to take a picture where we could see the bright blue sky and fluffy clouds, we would have to under expose the photograph. While the clouds might look great in our under exposed shot, the person that was the subject of our photograph would be too dark. Thanks to HDR we can fix this problem.
With HDR photography you take a series of photographs with different exposures, some under exposed to catch the detail in the bright areas and some over exposed to capture the detail hiding in the dark areas. Then you combine them together to get one photo that has the data from both the under and over exposed images. This gives you a superior image where you can see the subtle details in the bright areas as well as what is lurking in the darkness.
Another side of HDR Photography is the artistic effect that can be created with HDR images. HDR can create a highly saturated with bright colors and an embossed look.
There are some great photographs that look amazing with a Heavy HDR effect. But it is not something that looks well with all images.
Love Or Hate
Some people enjoy the HDR effect while others find it gives an over manipulated look. For the most part it is a personal taste if you like or dislike the effect. However, a lot of the distaste that serious photographers have against the HDR effect stems from the over use of the effect on bad images to try and salvage them.
HDR Apps for the Android
- Camera 360 - Android app on AppBrain
Camera 360 - Turn your phone into professional camera. Provides LOMO, HDR, axis shift, draft, ghost, etc. and multiple styles. #No...
HDR Simulation Only
Unfortunately, the camera apps that are available through the google marketplace only have an HDR simulation. By HDR simulation they mean they use Tone Mapping to improve the contrast over the entire image. Some also offer a Heavy HDR Simulation which gives you the bright artistic look of the HDR effect.
However there are no True HDR apps which take a bracketed set of multiple images at different exposures. There are a couple HDR Apps for the IPhone, but nothing yet for the Android. This used to be because their was no way for the apps to adjust the exposure on Android phones. But, google recently added Exposure Compensation to the camera API in their release of Andriod 2.2.
2.2 and Still Waiting
Google has already released 2.2 and upgrades have already been pushed out to many of the existing Android phones, including the Sprint HTC Evo 4G. I have been searching the Marketplace regularly since I applied the 2.2 upgrade to my Evo, but have not seen a real HDR app yet.
True HDR On The Way
I decided that a True HDR app is overdue for the Android. As I work as a programmer and photographer I decided that I would take on the task of creating a True HDR app for the Android.
Keep your eyes out for the ApertureRing HDR App. I will have it up on the marketplace shortly after I get all of the bugs worked out.
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