ISO

“Conventional film comes in different sensitivities (ASAs) for different purposes. The lower the sensitivity, the finer the grain, but more light is needed. This is excellent for outdoor photography, but for low-light conditions or action photography (where fast shutter speeds are needed), more sensitive or "fast" film is used which is more "grainy".
Likewise, digital cameras have an ISO rating indicating their level of sensitivity to light. ISO 100 is the "normal" setting for most cameras, although some go as low as ISO 50. The sensitivities can be increased to 200, 400, 800, or even 3,200 on high-end digital SLRs. When increasing the sensitivity, the output of the sensor is amplified, so less light is needed. Unfortunately that also amplifies the undesired noise. Incidentally, this creates more grainy pictures, just like in conventional photography, but because of different reasons. It is similar to turning up the volume of a radio with poor reception. Doing so will not only amplify the (desired) music but also the (undesired) hiss and crackle or "noise". Improvements in sensor technology are steadily reducing the noise levels at higher ISOs, especially on higher-end cameras. And unlike conventional film cameras which require a change of film roll or the use of multiple bodies, digital cameras allow you to instantly and conveniently change the sensitivity depending on the circumstances”
This week, I will be covering on what ISO is. Many people might not be aware of what is it, but ISO is actually a form of a speed to help boost a DSLR’s shutter speed. The advantages of it are that if you were in a dark environment and need a faster shutter speed to shoot, ISO comes in very handy. And especially now with better technology, ISO speeds can go to as high as ISO 12 800 compared to ISO 1600 almost eight years ago.
However, ISO has its disadvantages as well. If too high a ISO speed is used for an image. The image quality will turn out very bad, the pixel-like dots you see on the.”

Aperture

“An aperture is a hole or an opening through which light travels. More specifically, the aperture of an optical system is the opening that determines the cone angle of a bundle of rays that come to a focus in the image plane.”
This is my favourite week. Why? Because I love really aperture very much. Besides ISO, which I will be covering on it next week, Aperture is the function that I hold very dear to. Aperture affects almost every possible outcome in a picture. It affects the shutter speed, the quality of images, and the sharpness of images taken. It also affects the Depth of Field of a picture. The depth of field is the blured part of a photograph you see.Aperture is used by the term F-stop

exposure

“Exposure, is the total amount of light allowed to fall on the photographic medium (photographic film or image sensor) during the process of taking a photograph. Exposure is measured in lux seconds, and can be computed from exposure value (EV) and scene luminance over a specified area.
In photographic jargon, an exposure generally refers to a single shutter cycle. For example: a long exposure refers to a single, protracted shutter cycle to capture enough low-intensity light, whereas a multiple exposure involves a series of relatively brief shutter cycles; effectively layering a series of photographs in one image. For the same film speed, the accumulated photometric exposure (H) should be similar in both cases.”
I found this week’s PDP goal rather interesting. I search “exposure, photography” on the google search engine and I came across this link to wikipedia, I was puzzled what Lux was, I first thought it was the shampoo brand that always had advertisements in the media. But the term Lux, is used to measure the speed of light that reaches into the camera sensor. The symbol for Lux is Lx.Okay, I learnt something today.

rule of thirds

I am into my 2nd week of my Personal Development Plan. For this week, I have read up on what the Rule of Thirds in Photography is. It was interesting to read up on it, because all along I only knew what the Rule of Thirds was pertaining to photography, but is only now that I realised that the Rule of Thirds applies to painting, videography and even design! And as I start noticing around me, I realise that there are a lot of advertisement, television shows that apply the Rule of Thirds.
That was some food for thought.