Learn about ISO, aperture and shutter speed

Let's talk about cameras. I personally believe that cameras capture life and wonderfully preserve the time. It can tell stories even if it doesn't have words. Here's what you need to know about cameras and hopefully help you capture great photos.


The exposure triangle

Aperture


How wide the shutter will be open to let in light.  Aperture is denoted by f-stops, that is, the letter "f"-slash- a number. The lower the number, the wider the aperture.

The aperture of a camera affects the exposure of a photo. The wider the aperture, the brighter the image. It is advisable to use wider apertures in low-light conditions. However, wide apertures make an image blurry as more light enters the sensor. The subject has to be still as possible.

Another area affected by aperture is depth of field. 

a large aperture results in a large amount of background blur
Likewise

a small aperture results in a small amount of background blur

ISO

ISO (or ASA) was the indication of how densitive a film was to light. It was measured in numbers (you’ve probably seen them on films – 100, 200, 400, 800 etc). The lower the number the lower the sensitivity of the film and the finer the grain in the shots you’re taking

Generally lower ISOs gives you less grainy photos. However, it also means slower shutter speeds. If you're shooting still subjects with ample light, you may choose a low ISO. If you're shooting indoors or your subject is moving, higher ISOs will give you better results.

Shutter speed

Refers to how long the camera sensor will be exposed to light. It is represented by fractions of a second (1/100, 1/16000, etc.) to a couple of seconds. Some DSLRs have a "Bulb" mode where it gives you control when to close the shutter.

Shutter speed can have creative effects on images. Here are some of them:


Motion blur


Exposure 

Photos from PhotographyMad

Changing one of these settings  affects the other. For example hwider aperture means higher ISO and fast shutter speeds.

All of these falls down to how you play with your camera. What do you think about the exposure triangle? Have you played around with your camera? Comment your best shots below!

By the way, here's mine:



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