Photography Guideline (Chapter1):
Suppose you have bought a DSLR Camera. Due to no idea about DSLR, of course you get worry to see lots of button after unpacking the camera and seem to have the large User Manual that it is a labyrinth. Then what will you do, start to shoot after selecting auto mode. If you shoot by auto mode, so what is the necessity of DSLR? Do not have any Mobile Phone? If the above discussion is right for you then the blog is for you. Let’s see:
Since you have bought DSLR by a large amount so of course you hope that the picture will be as you want. But you will not get result as you want by Auto Mode. So you have to select a manual from the Manual Mode. it will be discussed about how to set manually by this tutorial. Which one we know as “Shooting Mode” that is the primary activities of DSLR. Generally there is a Dial Button on the above of the camera. Let’s see from the picture bellow.
Shooting Mode is selected by the Round Dial Button. Auto Mode select exposure, aperture, shutter speed by itself and you can select exposure, aperture, shutter speed by the others such as AV, Tv, P, M etc. The dial button can be different according to manufacturer. At first you have to find your Dial button.
Aperture Priority (Av, or A)
Aperture Priority is the name of shooting mode. It gives the priority to Aperture. The mode is considered as a semi-automatic mode. When this mode will be selected then you can select aperture as you want and shutter speed will be selected by the camera. Now question is what is aperture and when you will control it ?
Aperture is the size of the hole of your camera. When the shutter is opened at this time light will enter through the hole. As much as the hole is large that much light will enter. ‘f-stops’ is the unit of Aperture. Generally it is expressed by ‘f-number’. Such as f/2.0, f/2.8, f/4.0, f/5.6, f/8.0 express the ratio of focal length of the lens diameter of the camera. That’s why the large Aperture is expressed by small f-number. That means as much as smaller is the f-number as much as large is the Aperture. So f/2.0 is so much greater Aperture than f/8.0.It will be clear by this picture bellow.
Trough the large hole (small f-number) more light enter. So the photo becomes more clear. For the large Aperture or small ‘f-number’ the depth of field become low so the subject of the photo becomes clear and the background become dim. But large Aperture is not always good image. It depends on necessity. Aperture is related to depth of field. Now what is depth of field? Depth of field is that area which is on focus area. Which part of the photo is looks like clear that part is Focus and dim part is out of the focus.
Small Aperture or Large ‘f-number’:
Now if you want to capture the photo of Hill or Mountain then small ‘f-number’ Aperture is suitable. So that the photo will be clear from Foreground to Background. The Photo of bellow is taken by small Aperture or large depth of field (f/13):
Large Aperture or Small ‘f-number’:
Again if you want to capture a nearest and small subject like the picture bellow. Then large Aperture makes the subject clear which stay on focus. The Photo is taken by large Aperture or small f-number (f/4.5):