Understanding Photography 

In a time when every one has a camera on their phone, there is a real need to understand how to make better pictures.  Generally people just take a snap shot, but with a little bit more thought a much better image can be captured. Learn how to amaze your friends with spectacular images of every day events and learn how to see a beautiful picture, before you before you make a beautiful picture come alive.

 

The best camera is always the one you have with you. But better images can be created with with dedicated camera, where you you are in control and not automatic the exposures from from an automatic function in your camera phone or small compact camera.

 

There are a lot of cameras on offer with all sorts of buzzwords like mega-pixels and ISO that seem to confuse people. Most people will understand how to press a button to take a picture and then wonder why the picture didn’t look like what you saw in the back of the camera. So let us look at some terms to better understand how a camera works. All the terms used apply to  camera phones or high end cameras. The following are basics so that you can you will find in all cameras.

 

The Exposure Triangle.

Is about learning what happens when your press the button on your camera or smart phone to take a picture… 

 

ISO =  

Is the sensitivity to light of the digital sensor chip in your camera. The better and bigger the sensor the the more detailed your image will be.  Currently most cameras on offer in the commercial market have small crop sensors. The ideal size is a full frame or the equivalent of 35mm film camera. In the high end of camera market the sensors are larger and are used almost exclusively by Top Professional Photographers. These sensors are also measured in megapixels and this can be confusing because a bigger sensor and a crop sensor can have the same megapixel rating. However the larger sensors are not the same as the pixels cover a larger area and are slightly bigger and they absorb more light by area than the crop sensors do. This means that they have better light sensitivity than the smaller  Crop sensors. The advantages of bigger sensors is lest noise, better resolution and generally a higher dynamic range. Which means they will deliver a better image with a greater range of colours and detail.

 

Shutter Speed = 

This controls the amount of time that the shutter will let in light to expose the image on the sensor. This can be minutes or thousandths of a second. More speed freezes fast action. (Freezes Sports and Action images)Slower speeds are good for low light pictures like night, starlight and firework photography however a tripod is recommended for low light photography as any movement will blur the picture.

 

Aperture =

Controls the light that comes though the camera lens using diaphragm that opens up to let more light in, or closes down to let less light in. This also controls how much of a photograph will be in focus, as smaller openings have a greater depth of field than large openings do. For example a landscape looks better when there is an extended range of sharpness. Using wider apertures gives less depth of field than smaller aperture and will blur the background (Like you see in many portrait images) if you have a fast lens, (That is a lens with a wider aperture) this generally applies to  medium lenses through to telephoto and the effects  you see will depend on how large the aperture on your lens is. Wide angle lenses however tend to have a great depth of field (area in focus) Than longer lenses do and are less likely to blur the background.

 

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