Union Station. (Ramya Jegatheesan/CBC)

By Your Voice team, CBC News

As the G20 summit approaches, the streets of Toronto have undergone a transformation with barricades and fences being erected downtown in the area around  the Metro Toronto Convention Centre, where the gathering of world leaders is being held.

Newspaper boxes, small trees and garbage containers have disappeared, while portable bathrooms, protest posters and hundreds of police officers have appeared. The CBC Your Voice Team is asking citizens to help document the changes in the days leading up to the main event.

We've picked out a few key locations that we expect will see the most activity and changes in the days ahead, and we're asking you to photograph these spots and send in your pictures. You can upload your images here or go to our G20 Flickr pool or email them with the words "G20 transformation" in the subject line.

Queen's Park


(Ramya Jegatheesan/CBC)

As the designated protest site, Queen's Park will be a hub of activity.

University and Queen


(Ramya Jegatheesan/CBC)

University Avenue may be a hotspot for protesters.

University and Wellington


(Ramya Jegatheesan/CBC)

Also a possible hotspot for protesters.

Yonge and Queen


(Ramya Jegatheesan/CBC)

We wonder how many shoppers will visit the Eaton Centre during the summit.

Dundas Square


(Ramya Jegatheesan/CBC)

Protesters may assemble at Dundas Square, a popular gathering spot, to spread their messages.

Queen and John, Queen and Spadina


Queen and John. (Ramya Jegatheesan/CBC)


Queen and Spadina. (Ramya Jegatheesan/CBC)

Queen Street is usually filled with people on the weekend, but that may change during the summit.

Union Station


(Ramya Jegatheesan/CBC)

Everyone passing through Union Station will have to deal with increased security.

Metro Toronto Convention Centre


(Ramya Jegatheesan/CBC)

With delegates and their entourages going to and from the convention centre, this area will likely see the most activity.

CN Tower, Rogers Centre and Roundhouse Park


(Ramya Jegatheesan/CBC)

On the weekend of the summit, we wonder what this bustling tourist area will look like.
 
Roy Thomson Hall


(Ramya Jegatheesan/CBC)

The concert hall sits on the border of the security zone.

Bay Street (between Wellington and Front streets)


(Ramya Jegatheesan/CBC)

The security fence along Bay may affecting some of the people who walk along that street to go to work.

Allan Gardens


(Timothy Neesam/CBC)

Several protest groups have planned protests here.

Before you get snapping, CBC News photo editor Timothy Neesam has these helpful hints on getting the perfect shot.

1. Understand the rule of thirds

Your images will appear balanced and dynamic if you place your subject at least one-third the distance from one of the edges of your frame.

2. Focus

 Focus isn't just about sharp or fuzzy pictures. Decide what it is you're really taking a photo of, and you'll make sure the person looking at your picture will too.

3. Think with your feet

Look at what's in the frame and ask yourself, if I move to the left or right, will my picture improve? How about moving back or forth? What happens if I shoot the same scene from above or below the subject? Take full advantage of the amount of space you have to work with. Filling the frame helps your audience appreciate your image.

 4. Remember, it's all about the light

 Think about where your light is coming from and use it to your advantage. Putting light to the left or right of your subject, for example, can do wonders for your picture.

5. Be in the moment

Whether you're shooting landscapes, sports or someone you've just met, photography allows you to capture the spirit of a moment that's important to you. Take your time when you're making your photograph. Decide what it is you're really shooting, and compose your image carefully. Make it a moment that lasts. 

Related: G20:Your experience
Related: It's going to be a heck of a week