A lot of people have been asking me what is ISO and what is aperture and shutter speed.

These three are interelated. But I shall just touch a little bit about aperture and shutter speed for now. About ISO… let’s just put it this way; the higher the ISO number, the more sensitive the camera censor is to light, thus enabling low light photography without flash up to a certain extend.

Now with that out of the way, what is aperture and shutter speed? A very simple explanation is this; an aperture is an opening where light passes thru, hits your camera censor which in turn ‘captures’ the image. Shutter speed is how long the shutter stays open, allowing light to pass thru the aperture. Eg. A shutter speed of 1/250 means that the shutter stays open for 1/250 seconds or 0.004 seconds.

Now let’s go a little deeper.

An aperture is something created by something else. When you cut a hole in a paper, the hole cannot exist without the paper. Similarly, an aperture in a lens is created by the aperture blades.

The picture above shows a typical lens viewed from the front. You see the red arrows? They are pointing at the aperture blades. The blades create a hole (aperture) circled in yellow. You control the opening and closing of the blades to make a bigger or smaller aperture.

No. 1 shows a larger aperture. No. 2 shows a smaller aperture. Obviously, a larger aperture will allow more light to pass through.

The lens aperture is specified as an f number. A lower f number denotes a larger aperture opening. For example..

The following pictures are the result of taking two pictures of the same scene using different f numbers.

Taken at f5

Taken at f32

So what is the relationship between aperture and shutter speed?

Remember that a larger aperture will allow more light in compared to a smaller aperture? Well if you are taking a picture at f2.8, you would be using a higher shutter speed, eg. 1/250. If you increase the f number, eg. f5.6 or f8.0, then you would have to lower your shutter speed because you need to have the shutter stay open longer to allow more light to enter through the smaller aperture.

I really do hope that this post can help you guys in one way or another and not confuse you guys further.

All pictures thanks to wikipedia.com

For a more information, click here

As promised…

First up, the Toyota Camry pictures…

here is the rear end view..

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Oh.. sorry. Wrong picture. Dang!! Where did I put the pictures of the Camry. But nevermind lar.. trust me that the new Camry’s rear end is nice.

Anyways.. had a nice lunch.

Shark’s Fin Mee Sua.

Well, not actually my dish. I had fried rice

And… try not to take photos of a kid when he is chewing something.

After visiting Toyota, that night we had a birthday BBQ.

We had a good time there. The noisiest bunch around… actually.. just Alka and JC is enough to bring the house down. But they are good people.

They are loving people..

And people of workship..

And presenting the birthday girl..

Pretty leh… and she dance good as well..

Oh yes… and the food was good as well