Suggest a lens for taking "room" pictures.?

If you're using the 18-55 kit lens, what you'll need to do is get a lens that goes down to 10mm like a 10-20mm. The pros use 16-35, 17-35 L series lenses on full-frame cameras. If you used the same lenses on your rebel, which you can, the crop factor would give you roughly the same angle of view as your kit lens. That is, unless you used a Metabones Speed Booster on your APS-C Rebel which eliminates the crop factor by widening the focal length of the lens. It's like the opposite of a teleconverter.

You should look for an ultra-wide zoom by Canon, Tokina, Tamron or Sigma.

Here's a link to B&H showing the ultra-wide zooms that will fit your needs: http://www.bhphotovideo.com/c/search?atclk=Lens+Ty...

Remember to:

1. Always use a tripod and a cable release. No cable release? Use a self timer. Using the shutter button w/o a self timer will cause blur.

2. Don't use the built-in flash or an attached flash. Turn on all of the lights in the house instead. This can, not always, but can give much better ambient lighting to a room and it makes the room look lived in. Turning the lights on is a common technique used by the pros for esthetic reasons.

3. Take overall shots and then move in for details if you need them.

4. Use props like a plate with a muffin and a cup of coffee on a table which adds life to an image.

5. Take a look at a lot of interior shots in magazines like Better Homes and Garden, or architectural magazines for ideas and insperation on how the pros take their shots.

Every lens out there is possible for taking room pictures. IF you don't know exactly what you need, the 18-55mm lens that comes with the camera will do fine. The closer to 18mm you set the lens, the larger part of the room you can take.

Since you are shooting indoors, you will most likely need a strong flash to properly light the whole room. I suggest you get one that can zoom to wide angle as that is what you will be needing to cover the room from left to right.

On an APS-C Sensor DSLR use a 10-22mm wide angle. The 18mm on the standard 18-55 is often not sufficient, though you could shoot 2 or 3 images and sitch them.

A wide angle lens.