Note: This article is somewhat out of date. The Canon t4i is the latest part of the Canon EOS Rebel line, and you'll want to read this article comparing the Canon t3i and Canon t4i instead.
So you're browsing for a dSLR. You're weighing a Canon t1i, a Canon t2i, or a Canon t3i. Which one should you get? One clear piece of info you could consider is the digital camera's number of pixels. Which of the three has the best camera resolution?
The Canon t2i and t3i both hold a little edge in terms of resolution. They have a 18 megapixel resolution, yet the Canon t1i has a measly 15 megapixels.
Should this push you one way or the other? I don't think so. In most cases, roughly eight megapixels is more than necessary. Anything else is wasted.
A normal 4x6 picture, done at 300 dots per inch, necessitates around 1200 x 1800 pixels. That's a bit over 2 megapixels. A bigger, 8x10 print makes use of 2400 x 3000 pixels. That's around 7.2 megapixels. Unless you will be making ginormous pooster prints, you'll never going to make us of all the information stored in those extra pixels.
There are a handful of other reasons why you might want to step up from the Canon t1i to a different camera - like a Canon t3i, or a Canon 60D or 7D. Yet, resolution ain't honestly a valid reason. The step up here is tiny. Interestingly enough, the lot of these devices (the t2i/550D, the t3i/600D, the 60D, and the 7D) all use the same image processor, yielding just the same resolution and image quality.
If you require a more detailed look at these cameras, read this rigorous look at of the Canon t2i vs t3i. Read that for a look at how the three SLRs are the same and unique. If you're looking for, you probably too want to read another complete comparison about the variations between the Canon t3i vs 60d vs 7d.
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