With Canon’s newest 24 megapixel sensor, the SL2 has quite good image quality overall. Although it is not the best on the market at high ISOs, the technical image quality will not hold you back from capturing good photos with this camera.
Here is a set of photos taken from ISO 100 to ISO 25,600 with the Canon SL2. All of these images are extreme, 100% crops from a RAW photo, with no downsampling, upsampling, or sharpening applied. Click on the images below to see their ISO and scroll side to side:
Personally, I would be comfortable using ISO 1600 on the SL2 without a problem, and I would be willing to use ISO 3200 if necessary. ISO 6400 would only be for the most extreme situations, and I likely would need to convert the resulting images to black and white. Anything higher than that really only exists for surveillance work, or for laughs.
On the next page of this review, we will compare this image quality to the Nikon D3400, as well as see how the SL2 stacks up against its other competitors.