Canon Rebel T2i / EOS 550D and 50D comparisons
Canon rebel T2i or EOS 550D is the successor of Canon rebel T1i. Canon T2i will be available at $899.99 with the kit lens 18-55mm in April 2010. Canon T2i has a much better movie mode and a metering system than Canon rebel T1i. Comparing with Canon 50D, the major differences are as follows:
Canon 50D was made from magnesium alloy and Canon T2i was made from plastics. Canon 50D is a tougher camera with better handling.
Canon T2i uses a 18 Megapixel sensor and Canon 50D uses 15.1 Megapixel sensor. In real life, the extra pixels might not make a big difference.
Canon 50D was released on Oct 2008 and does not have the movie mode. Canon T2i is a new camera with one of the best movie modes in all digital SLRs. Canon T2i can record 1080p video clips at 30fps and 720p videos at 50 and 60 fps. Canon T2i also has a stereo microphone input for the recording of videos in stereo sound. Canon also claims the full manual control and full AF during the video recording.
Canon 50 has a better focus system. Although both cameras have 9-point AF, the 9 points in Canon 50D AF system are all cross-type sensors. On the other hand, Canon T2i has 9-point AF center cross type.
Canon T2i has a much better metering system which was used in Canon 7D: the 63-zone iCFL dual layer metering system. Canon 50D used a 35 zone metering system.
Continuous shooting speed
Canon 50D is a much faster camera with 6.3 fps continuous shooting speed and Canon T2i has 3.7 fps continuous shooting speed. The higher shooting speed is very useful for sports photography and wildlife photography or other action shots such as children at play.
Canon 50D has a better viewfinder than Canon Rebel T2i or 550D. The viewfinder in Canon 50D uses a pentaprism which gives a brighter and larger image than the viewfinder in Canon Rebel T2i or 550D which uses a pentamirror. Canon 50D also has a larger view finder magnification (0.95) than Canon Rebel T2i or 550D (0.87).
In addition Canon T2i has some new features such as a LCD with 1.04 million dots and 3:2 aspect ratio which is the same with sensor for better display and playback, the compatibility with the SDXC cards and HDMI port etc.
In conclusion, Canon 50D is a much better camera to take pictures overall for its building quality, higher continuous shooting speed and better AF system. Canon T2i is a new camera with advanced features which is better for people who need a dslr for movie recording, who use it as the second camera back up or who use it as a travel camera.