Digital camera auto exposure and auto focus
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The digital camera being a fantastic and technologically advanced device contains many different
applications of its own. Many users of this fabulous device are unaware of quite a few of these
functions which can actually do wonders. And it is the duty and right of every person possessing
the digital camera to intervene into the depths of knowledge to understand their prized possession
and their varying qualities in order to foster the true respect that this device deserves. This article
deals with providing information regarding one those qualities - Auto focus and auto exposure!
Exploring the information in slight more details it can be stated that auto exposure cameras are
provided with a fixed focus lens or manual focus lens. These cameras are the simplest to set
exposure. To obtain the correct exposure for a particular subject of photography, the only thing
that needs to be done is to simply lock the exposure by pressing the shutter down halfway on the
digital cameras upon a reference object that is about one fifth gray and also illuminated by the aid
of the same source of light as subject of photography. After locking the exposure, the
photographer has to recompose the frame and shoot the picture. Auto exposure and auto focus
cameras are to some degree harder for setting the exposure, because they contain the exposure
lock that is generally tied to focus-lock. However, the users or photographers using these auto
exposure and auto focus cameras can still make adjustments for the correct exposure and correct
focus using the digital cameras and make the photographs perfect! Again, the exposure can be
adjusted by locking on an 18% reference that is illuminated by the aid of the same source of light
as subject of photography. The users have to only ensure that the distance to this so-called
reference is the same as the distance to the subject of photography that actually sets the focus.
Now discussing the auto focus and auto exposure lock (AE/AF) a bit more in detail. The shutter
release button on a digital camera has more function than just snap a cool picture. The users have
to grab a technique where he or she has to depress this shutter release button half way down
thereby locking both the auto exposure and auto focus. This enables the users or photographers to
have more control on exposure in difficult lighting situations while using the digital camera.
Moreover, this entire process also helps him or her to determine where the camera focuses. Like if
the photographer intends to set the exposure before composing the final shot of the photograph
then he or she can move the digital camera slightly so that only the subject to be photographed is
visible prominently in the auto focus frame in the viewfinder. As a next step he or she can depress
the shutter-release button down half way to set focus and exposure and then recompose the
picture and finally completely depress the button in order to capture and freeze the moment of
time! It is to be noted here that the auto focus and auto exposure lock (AE/AF) is available in all
photography modes of the digital cameras that are nowadays available for the general people.
Not much remains to be discussed about this particular topic of auto focus/auto exposure and a
brief discussion as above is enough to reveal a bounty of information regarding this fantastic
feature of the digital cameras. At the end of this discussion it can be expected that both the novice
and expert photographers and user of the digital camera would benefit from whatever has been
revealed and the effort to bring out the human mind from the dark oblivion about auto focus and
auto exposure lock would be a success in the magic light of the digital camera!