Image Performance, Conclusion
Of course, the main reason you’d get a DSLR camera these days instead of a mirrorless camera is the image quality from a larger APS-C sensor. Resolution scores a high 2600LPH (horizontal and vertical) on our resolution chart, and you can shoot up to ISO 3200 to get clean, safe results. ISO 6400 isn’t terrible and ISO 12800 isn’t hopeless, but you’ll see noticeable noise and degradation of detail. JPEG colors are vivid and much like what you’d expect from Canon, boosted just right to look good and not garish.
In comparison to mirrorless system cameras which only use phase-detection auto-focus (mirrorless cameras like the Nikon 1 series are an exception), DSLR cameras like the 100D also do better at tracking moving subjects using the AF-Continuous mode.
The compact size of the Canon EOS 100D is its upside as well as its downside. Thanks to the fact that it has an EF mount, you have access to Canon’s rich library of DSLR lenses. But the diminutive camera body really isn’t built for large lenses; which offsets its heft and make it unwieldy. That limits your choice of lenses, especially with large zooms. That's not to say there aren't any compatible lens, Canon's pancake 40mm f/2.8 looks like the perfect fit for the 100D. However, it is a counterpoint to Micro Four Thirds mirrorless cameras, which admittedly have smaller image sensors than the 100D, but also much smaller lenses for a more balanced total package.
But if you just want an affordable, easy to carry DSLR camera around, the EOS 100D is the pick of the crop at this moment. Canon deserves extra props for creating the most usable Live View and touch-screen functions today with a DSLR camera, which makes the EOS 100D a breeze and a pleasure to handle for both beginners and experienced users. The camera's lightness makes it fun to carry around and use, while the large APS-C image sensor produces great picture quality.