Posts Tagged ‘avoid underexposed subject’

Metering Modes and a Day Out on Australia Day

Monday, January 26th, 2009
Southern Star Observation Wheel

Southern Star Observation Wheel

Today I was fortunate enough to be able to go out and enjoy the festivities of the long weekend on Australia Day, in particular at Docklands. There are bands, attractions, people and lots of stuff to see.

Sand Sculpture at Dockland

Sand Sculpture at Docklands

Check out the sand sculpture to the left for example, isn’t it amazing? The description said that it took 1 tonnes of sand to make this sculpture, incredible. Also to our surprise, this piece of art can withstand 3 days of rain!

While I was strolling about the complex and taking a few photos, I suddenly remembered the thing about cameras that most people do not really understand how to use, and that’s the metering mode. I have this sudden jolt of idea to put this up in this blog when I took the picture of the interesting entertainer on the right.

Horsemen Underexposed

Horsemen Underexposed

The picture of this funny “horsemen musicians” was very dark when I previewed it. I was using aperture priority mode (I control the aperture the camera decides the shutter speed) with matrix metering. That’s when I immediately remembered to change the metering mode in my camera to fix this. Of course there is another way to avoid this kind of problem by ensuring the right direction of the light source, checkout the “Frequently Missed Items” post.

A quick look at the metering modes

At the very basic level, most of modern cameras would have: matix metering, centre weight metering and spot metering.

When using matrix metering, the camera estimates the amount of light needed to capture an image by averaging the light intensity in different parts of the image. So if you have a camera with say 15 dynamic areas metering, it means the camera basically divided the current scene into 15 areas and uses them to average out the light needed. The downside of using matrix metering is when the subject is dark and the background is very light, the camera is fooled into thinking that there is enough light needed, like the horsemen underexposed picture.

The solution that I decided to use is setting my camera into centre weight metering where the camera uses the centre part of the image as an average area of reference for its calculation. You can normally see the area used for the centre weight metering calculation through your viewfinder; ie. the round marking in the middle.

Horsemen Centre Weight

Horsemen Centre Weight

After using that metering, there result is as “Horsemen Centre Weight” picture. The camera is no longer fooled by the light background.

Another more accurate solution is the spot metering, with this activated, the camera relies on a certain point in the scene as the point of reference. Normally this can be seen in your viewfinder as the smaller circle or the square right in the middle of the scene. I used this metering to take a picture of the band below. The scene was tricky because the subject moved around and most of the background was very light.

Band Underexposed

Band Underexposed

Band Right Exposure

Band Right Exposure

I locked the spot exposure on one of the band personnel, compose the scene and took the picture.

More festivities

Mini Children Tennis

Mini Children Tennis

As I moved on, more interesting attractions are scattered along the area. Even the excitement of Australia Open can be felt here, from the big screen and from the children playing.

I’d have to say that this area has become much more alive than it used to be a few years ago. Lots of shops, restaurant and of course the Southern Star Observation Wheel are now in business. With the weather as nice as today, it was indeed a great day out for recreation!

Docklands Shops

Docklands Shops

Festivities at Docklands

Festivities at Docklands

Melbourne Sunny day

Melbourne Sunny day