Digital Camera Auto Exposure And Auto Focus
By Jakob Jelling, Fri Dec 9th

The digital camera being a fantastic and technologicallyadvanced device contains many different applications of its own.Many users of this fabulous device are unaware of quite a few ofthese functions which can actually do wonders. And it is theduty and right of every person possessing the digital camera tointervene into the depths of knowledge to understand theirprized possession and their varying qualities in order to fosterthe true respect that this device deserves. This article dealswith providing information regarding one those qualities - Autofocus and auto exposure!

Exploring the information in slight more details it can bestated that auto exposure are provided with a fixedfocus lens or manual focus lens. These are the simplestto set exposure. To obtain the correct exposure for a particularsubject of photography, the only thing that needs to be done isto simply lock the exposure by pressing the shutter down halfwayon the digital upon a reference object that is about onefifth gray and also illuminated by the aid of the same source oflight as subject of photography. After locking the exposure, thephotographer has to recompose the frame and shoot the picture.Auto exposure and auto focus are to some degree harderfor setting the exposure, because they contain the exposure lockthat is generally tied to focus-lock. However, the users orphotographers using these auto exposure and auto focus camerascan still make adjustments for the correct exposure and correctfocus using the digital and make the photographsperfect! Again, the exposure can be adjusted by locking on an18% reference that is illuminated by the aid of the same sourceof light as subject of photography. The users have to onlyensure that the distance to this so-called reference is the sameas the distance to the subject of photography that actually setsthe focus.

Now discussing the auto focus and auto exposure lock (AE/AF) abit more in detail. The shutter

release button on a digitalcamera has more function than just snap a cool picture. Theusers have to grab a technique where he or she has to depressthis shutter release button half way down thereby locking boththe auto exposure and auto focus. This enables the users orphotographers to have more control on exposure in difficultlighting situations while using the digital camera. Moreover,this entire process also helps him or her to determine where thecamera focuses. Like if the photographer intends to set theexposure before composing the final shot of the photograph thenhe or she can move the digital camera slightly so that only thesubject to be photographed is visible prominently in the autofocus frame in the viewfinder. As a next step he or she candepress the shutter-release button down half way to set focusand exposure and then recompose the picture and finallycompletely depress the button in order to capture and freeze themoment of time! It is to be noted here that the auto focus andauto exposure lock (AE/AF) is available in all photography modesof the digital that are nowadays available for thegeneral people.

Not much remains to be discussed about this particular topic ofauto focus/auto exposure and a brief discussion as above isenough to reveal a bounty of information regarding thisfantastic feature of the digital cameras. At the end of thisdiscussion it can be expected that both the novice and expertphotographers and user of the digital camera would benefit fromwhatever has been revealed and the effort to bring out the humanmind from the dark oblivion about auto focus and auto exposurelock would be a success in the magic light of the digitalcamera!

About the author:Jakob Jelling is the founder of http://www.snapjunky.com. Visithis digital camera guide and learn how to take better pictureswith your digicam.