Thursday, March 10, 2011

Type of lenses you should know












1.Production from 55mm f/2.8 Macro Lens(Bug)
2.Production from 50mm f/1.8 standard lens(Cat)
3. Production from 70-200mm f/2.8 Telephoto lens




















Lenses are important in photography. Different type of lenses produce different quality of photos. For DSLR, there are Fix Lens and Zoom Lens. Fix lens or also known as Prime Lens have fix focal length. Unlike the Zoom Lens, it have adjustable focal length. For an example of Fix Lens is 50mm f/1.8. This lens have focal length of 50mm only, the lens cannot zoom in or zoom out. For the Zoom Lens, let say you have 70-200mm f/2.8, the lens can be zoom in from 70mm to 200mm and zoom out from 200mm to 70mm which means you have multiple focal length with this length. The advantages of Fix Lenses are the quality of the photos are usually better and the aperture can be opened up to f/1.4 which allow more light enter the lens so that you can have a faster shutter speed in dark places. Large opening of aperture also can give you a shallow depth of field. The Zoom Lens usually have variety of focal lenght and the advantage is you can use it in a narrow and wide area. There are so many type of lenses, that is Macro,Telephoto,Standard, Fisheye, and Ultrawide. Macro lenses are use to capture a small subject. For an example: insects,small objects etc. Telephoto lenses are use to capture a far object such as people in a street, sports, wild animals etc. Standard lenses is use to capture portraiture or a close subject. Fisheye lens is just like an ultrawide lens but it gives a super distortion on an image. For the Ultrawide lens it is use to snap landscape or scenery photos.

Silhouette


1. The horizon is an example of the interference


2. The cloud on the head of the man is the interference.(If there is no cloud,the photo is perfect!)






A silhouette is the image of a person, an object or scene consisting of the outline and a featureless interior, with the silhouetted object usually being black. How to produce a silhouette photo? First of all, a silhouette photo should consist a light background such as bright sky as a background. The background also should be clear, no distraction of other objects that may interfere the outline of the subject. What about the setting of your camera? Well, of course the shutter speed should be high because usually silhouette photos is freeze to have the sharp outline of the subject. Your aperture should opened not to large in order to decrease the light enter your lens. When you taking a silhouette photos, the subject should be upon the light source. e.g when you are taking the sky as a background, the subject should lies on the Sun. If the subject do not lies on the light source, there is an interference called the flare which ruin your photo.

Shutter Speed















1. Slow shutter speed results a silk-like water pattern(f/20 at 1/2 seconds)
2. Fast shutter speed results a freeze water pattern(f/7.1 at 1/80 seconds)


Shutter speed represents the time that the shutter remains open when taking a photograph.The shutter speed scales engraved on the shutter speed dial of conventional camera bodies with a shutter speed ring or via some flickering digital numerals on the LCD screen like: 1/8000, 1/4000, 1/1000, 1/500, 1/250, 1/125, 1/60, 1/30, 1/15, 1/8, 1/4, 1/2, 1 or -1, -2 etc. are essentially indicators of the duration at which the shutter curtain opens up and closes during an exposure process. A 1/125 setting means the shutter curtain open and close within one hundred and twenty five of a second while 1 means an one full-second the shutter opens up during exposure to absorb the available light source onto the film to form an exposure. Fast shutter speed enables a few amount of lights enter the lens while slow shutter speed enables much amount of lights enter the lens which results in underexposure and overexposure, respectively. In order to obtain a balance exposure, the aperture plays the role to balance it. Fast shutter speed captures freezing subject and for the slow shutter speed captures blurry subject.

Wednesday, March 9, 2011

Aperture

















1. f/22, Wide Depth of field
2.f/1.8, Shallow depth of field
3. Idol statue at Langkawi at aperture f/2.8, you can use shallow depth of field by widened the aperture to have this sort of unique picture


Aperture is a hole in a lens which allow lights enter into it. Basically, aperture control the amount of light enter the lens. A lens has many structures that limit the ray bundles. These structures may be the edge of a lens. The aperture also control the shallowness of Depth of Field or in other words, bokeh . The lens aperture is usually specified as an f-number. The larger the opening of the aperture, the shallower the depth of field. For an example, if you are using 50mm f/1.8, you shoot a subject at f/8 the depth of field is wider resulting in sharped background of the picture. Then if you shoot at f/1.8 the depth of field is shallow resulting in blurred background(shallow depth of field).









About this blog:Qubbat al-Muqaddimah

Muqaddimah means preface.What I mean preface here is the preface about photography!I will teach you some simple photography lesson for the newbies..enjoy!