The Canon EOS Rebel T100 / EOS 4000D is a simple APS-C DSLR camera. It offers little in the way of frills or extra features, with no 4k recording capability and limited recording options in FHD. Instead, it's better suited as a photography camera, as it takes sharp images that are low in noise and have a fairly high dynamic range. Its autofocus system also works well for still images, as it manages to track subjects consistently and quickly. Unfortunately, it isn't as comfortable to use or as well-built as more premium options.
The Canon Rebel T100 is alright for travel photography. Images are sharp and low in graininess even at high ISO settings, and the autofocus system does a good job of tracking and maintaining focus on subjects that move across the frame. However, it's somewhat bulky and not especially comfortable to use for extended periods. It also feels quite plasticky and, depending on your usage patterns, has short battery life.
The Canon Rebel T100 is decent for landscape photography. It offers great image quality, with a high dynamic range, good color accuracy, and low levels of graininess even at high ISO levels, which is great for nighttime shoots. However, its primarily plastic construction doesn't feel especially sturdy and isn't rated as being weather-sealed, though we don't currently test for that. It's also significantly bulkier than point-and-shoots or compact interchangeable-lens mirrorless cameras that can be stored in a pocket or a pouch. Its dim fixed screen can also be a bit of a challenge to see under direct sunlight, and while its kit lens lets in a good amount of light, it exhibits noticeable light falloff that makes the corners of an image darker than its center.
The Canon Rebel T100 is passable for sports and wildlife photography. Its slow maximum shooting speed can make it challenging to capture distinct images of moving subjects, though its fast maximum shutter speed does allow you to freeze their movement. Image quality is impressive, with little in the way of graininess even at high ISO levels, and it's fitted with a quick and consistent autofocus system. That said, the camera can be uncomfortable to use for long periods and isn't very well-built.
The Canon Rebel T100 is a bad choice for vlogging. Its fixed screen doesn't allow you to see what you're recording when the camera is pointed at you. Its bulky design can make it a nuisance to carry around for extended periods, and it also can't record in 4k. Also, FHD videos are blurry and somewhat grainy, especially in low-light environments. It doesn't support continuous autofocus, meaning that it can't refocus on subjects' faces by itself. Fortunately, video stabilization performance is fairly decent, and you shouldn't notice too much camera shake in handheld recordings.
The Canon Rebel T100 is terrible for studio video. Video quality in FHD is bad, with ample amounts of visual noise and an overall lack of sharpness. It's also lacking in inputs and outputs for various videography accessories, with no headphone or microphone jacks to help monitor audio levels more accurately or improve the audio quality in your videos. It doesn't support 4k video or continuous autofocus either, forcing the user to refocus constantly. On the plus side, its menu system is easy to understand.
The Canon Rebel T100 isn't designed for action video. It's too big to be attached to a chest or helmet rig and isn't weather-sealed, though we don't currently test for that. It also can't record in FHD at high-speed frame rates for generating smooth action video or slow-motion footage. Thankfully, it does a good job in smoothing out camera shake in handheld video.
Update 01/13/2022: Corrected lens mount type from 'EF Mount' to 'EF/EF-S Mount'.
The Canon T100 is only available in one color scheme: 'Black', and you can see its label here. This camera is also sold as the EOS 4000D in other markets. We tested it in conjunction with the Canon EF-S 18-55mm f/3.5-5.6 III lens, but it can be purchased with a wide variety of other EF and EF S-mount lenses, including the EF 50mm f/1.8 STM lens. However, we haven't tested it in any other configuration.
Let us know if you come across a different variant of the Canon T100 so we can update our review.