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Canon EOS 850D (Rebel T8i) Review - Performance

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Canon EOS 850D Performance

The performance section is where we look at the image quality performance of the camera. Additional sample photos and product shots are available in the Equipment Database, where you can add your own review, photos and product ratings.


 

Canon EOS 850D (Rebel T8i) Sample Photos

Sample Photos - Colour reproduction is very good, with Canon's colour science giving great results, that are representative of the scene you're shooting. Exposure is reliable, although the camera can give brighter images than other brands, so you may want to use -0.3 exposure compensation depending on your own preferences.

The camera copes well with a variety of scenes. Using the "Auto Lighting Optimizer" (ALO) option you can extend the dynamic range recorded in shots, without necessarily having to resort to using raw images, or the HDR shooting options. Skin tones are good, and the camera gives pleasing JPEG results straight from the camera. By processing the raw files, we were able to recover lost highlight detail, as well as boost shadows.

The camera has built-in lens correction, including peripheral illumination correction, to correct for vignetting, chromatic aberration correction, distortion correction, plus diffraction correction. This means it can correct for any issues that your lens may have, as long as the camera has the lens data loaded into it. You can also use in-camera raw-processing to adjust images after taking them.

The Canon EF-S 18-55mm f/3.5-5.6 III (non-IS) lens performs poorly, giving soft images. The lack of image stabilisation means we would not recommend this lens, unless you are limited in budget and it's the only option available.

Digital Filters - There are a number of effects available, and we've shown examples above. The HDR modes are a little dramatic and unnatural looking. There is no panoramic mode. 

 

Canon EOS 850D (Rebel T8i) ISO test images

ISO Noise Performance - The level of detail captured is very good, particularly at the lower ISO speeds from ISO100 to ISO1600. It's not until you get to ISO3200 till you start to notice noise in images, and at this setting, results are very good. ISO6400 produces images that should still be usable, depending on your needs. ISO12800 may provide usable images, however, we'd recommend resizing images, or further processing (such as processing the raw file, or converting to black and white). ISO25600 and above are best avoided entirely. Noise reduction options include Off, Low, Standard, and High, and these shots were taken on the default setting of Standard.

 

Canon EOS 850D (Rebel T8i) White-balance test images

White Balance Performance - Auto White Balance (AWB) gives slightly warm results under tungsten lighting, and by using the white priority setting, the AWB can give more accurate results, which is helpful for product shots. Using the tungsten preset gives whiter results. The camera performs well under mixed lighting. AWB performs well under fluorescent lighting, and the preset gives a slight colour cast. Thanks to the "White priority" AWB setting, and the good AWB performance, you can avoid using the presets, however you may find manual white balance useful in some situations.

 

Video - The camera records 4K (UHD) video with stereo sound at 25 or 24fps. When recording 4K video, the camera uses the central 64% of the frame, giving a big crop, this is further cropped to 57% with digital IS switch on (as in our video), and then this is cropped even further to 44% with enhanced digital stabilisation on. Recording FullHD video, there is a 90% crop, or 70% with enhanced digital image stabilisation on.

Recording 4K video, the camera doesn't use phase-detection AF, so focus can be slower as the camera uses contrast detection. Phase-detection AF is only available when recording FullHD video.

There's also a microphone socket if you want to use an external microphone. You can use the movie mode in auto or manual modes, and there's a time-lapse movie mode as well.

Digital image stabilisation helps a little, but can't quite compensate for the lack of stabilisation in the 18-55mm lens used for this video. It's also possible to see signs of "jello" as the camera is moved. Video footage will benefit from the use of a lens with optical image stabilisation for the best quality, or the use of a tripod / gimbal.  

 


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Photographs taken using the Canon EOS 850D (Rebel T8i)

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