Canon EOS 100D Review

May 30, 2013 | Mark Goldstein | |

Image Quality

All of the sample images in this review were taken using the 18 megapixel Fine JPEG setting, which gives an average image size of around 6Mb.

During the review, the Canon EOS 100D produced images of excellent quality. Noise handling is very good considering the pixel density. Shooting RAW is a good idea if you plan on taking lots of high-ISO shots, as you can get better detail with less chroma noise than by shooting JPEG. As regards the colours, we have found them to be a little on the dull side, though this is nothing you can't change in-camera, by way of tweaking the available Picture Styles or creating your own. The camera's Highlight Tone Priority mode allowed us to retain more highlight detail in contrasty scenes than would otherwise be possible without underexposing the midtones and the shadows. The built-in flash caused no red-eye, and the night photo came out very well. Overall, a very good showing.


ISO sensitivity can be set between ISO 100 and ISO 12800 in full-stop increments, and a boosted setting of ISO 25600 is also available. Here are some 100% crops which show the noise levels for each ISO setting, with JPEG on the left and the RAW equivalent on the right.



ISO 100 (100% Crop)

ISO 100 (100% Crop)

iso100.jpg iso100raw.jpg

ISO 200 (100% Crop)

ISO 200 (100% Crop)

iso200.jpg iso200raw.jpg

ISO 400 (100% Crop)

ISO 400 (100% Crop)

iso400.jpg iso400raw.jpg

ISO 800 (100% Crop)

ISO 800 (100% Crop)

iso800.jpg iso800raw.jpg

ISO 1600 (100% Crop)

ISO 1600 (100% Crop)

iso1600.jpg iso1600raw.jpg

ISO 3200 (100% Crop)

ISO 3200 (100% Crop)

iso3200.jpg iso3200raw.jpg

ISO 6400 (100% Crop)

ISO 6400 (100% Crop)

iso6400.jpg iso6400raw.jpg

ISO 12800 (100% Crop)

ISO 12800 (100% Crop)

iso12800.jpg iso12800raw.jpg

ISO 25600 (100% Crop)

ISO 25600 (100% Crop)

iso25600.jpg iso25600raw.jpg

File Quality

The Canon EOS 100D has 2 different JPEG file quality settings available, including Fine and Normal, with Fine being the higher quality option. Here are two 100% crops which show the quality of the two options.

Fine (5.83Mb) (100% Crop) Normal (2.75Mb) (100% Crop)
quality_fine.jpg quality_normal.jpg
RAW (22Mb) (100% Crop)  


The out-of-camera JPEGs are quite soft and at the default sharpening setting and benefit from some further sharpening in a program like Adobe Photoshop. You can also change the in-camera sharpening level to suit your tastes via the Picture Style options.

Original (100% Crop)

Sharpened (100% Crop)

sharpen1.jpg sharpen1a.jpg
sharpen2.jpg sharpen2a.jpg


The flash settings on the EOS 100D are Auto, Manual Flash On/Off, and Red-Eye Reduction. These shots of a white coloured wall were taken at a distance of 1m.

Flash Off - Wide Angle (60mm)

Flash On - Wide Angle (60mm)

ISO 64 ISO 64

And here are a couple of portrait shots. As you can see, neither the Flash On setting nor the Red-Eye Reduction option caused any amount of red-eye.

Flash On

Flash On (100% Crop)
flash_on.jpg flash_on1.jpg

Red-eye Reduction

Red-eye Reduction (100% Crop)

flash_redeye.jpg flash_redeye1.jpg


The Canon EOS 100D's maximum shutter speed is 30 seconds and there's a Bulb mode for even longer exposures, which is excellent news if you're seriously interested in night photography. The shot below was taken using a shutter speed of 15 seconds, aperture of f/8 at ISO 100.


Night (100% Crop)

night1.jpg night1a.jpg

Picture Controls

Canon's Picture Controls are preset combinations of different sharpness, contrast, saturation and colour tone settings. The available Picture Controls are shown below in the following series, which demonstrates the differences. You can tweak these Picture Controls to your liking, and there are also User Defined styles so that you can create your own look.



picture_style_01.jpg picture_style_02.jpg


picture_style_03.jpg picture_style_04.jpg


picture_style_05.jpg picture_style_06.jpg

Creative Auto

Essentially a more extreme version of the well-established Picture Styles, Creative Auto offers nine options including Standard, Vivid, Soft, Warm, Intense, Cool, Brighter, Darker and Monochrome, all of which can be interactively tweaked to suit your taste.



creative_auto_01.jpg creative_auto_02.jpg


creative_auto_03.jpg creative_auto_04.jpg


creative_auto_05.jpg creative_auto_06.jpg


creative_auto_07.jpg creative_auto_08.jpg

Auto Lighting Optimizer

Auto Lighting Optimizer performs in-camera processing to even out the contrast and correct brightness. There are 4 different settings - Off, Low, Standard and Strong.



auto_lighting_optimizer_01.jpg auto_lighting_optimizer_02.jpg


auto_lighting_optimizer_03.jpg auto_lighting_optimizer_04.jpg

HDR Backlight

The Canon EOS 100D's HDR Backlight scene mode captures three different exposures and combines them into one, retaining more shadow and highlight detail.



hdr_01.jpg hdr_02.jpg

Highlight Tone Priority

Highlight Tone Priority is a custom function which can be enabled from the menu. Use of this custom function improves highlight detail by expanding the camera's dynamic range in the highlights. As you can see from these examples, Highlight Tone Priority reduced the extent of highlight blow-out considerably.


highlight_tone_01.jpg highlight_tone_02.jpg