EOS Advantages

Image Quality

Canon Advantage - EOS Image Quality
Canon Digital Trinity Advanced 14-bit A/D Conversion Highlight Tone Priority
Auto Lighting Optimizer Chromatic Aberration Correction Lens Peripheral Illumination Correction
Certain images and effects are simulated.
Canon Digital Trinity
Canon’s CMOS Sensor captures images with exceptional clarity and tonal range and offers the most pixels in its class. Canon’s DIGIC Image Processor dramatically enhances image quality and speeds up all camera operations for intuitive operation. The sensor and processor work in concert with Canon’s superlative EF lenses, forming the ultimate Digital Trinity.
EF Lens
Great images start with great lenses. For many photographers, Canon’s legendary EF lens history is the reason to choose the EOS System. The EF and EF-S lenses are a unique blend of the world’s most advanced optical, micro-electronic and precision manufacturing technologies. EF lenses are perfected in Canon’s laboratories, proven in the field and are at the heart of professional photography. EF-S lenses designed especially for EOS APS-C sensor cameras provide lightweight, compact design and high value.
CMOS Sensor
Canon develops and produces its own CMOS sensors. Unlike CCD sensors, CMOS sensors convert and amplify signals before they are transferred to the image processor, enabling them to produce exceptionally clean image data and reduce power consumption. Data transfer speeds are increased by using multi-channel signal paths that dramatically improve the camera’s responsiveness. Canon’s CMOS sensors incorporate a unique noise reduction technology to handle both fixed pattern and noise. A multi-layer low-pass filter is placed in front of the sensor to isolate false colors that the sensor may detect. Then, the DIGIC Image Processor processes the image to eliminate those colors while retaining full detail.
EOS Digital SLR cameras with full-frame sensors do not require a focal length conversion factor common to other digital SLR cameras on the market. Instead, they deliver the same angle-of-view as 35mm film cameras. Full-frame sensors provide greater control over the depth-of-field, allowing you to create a beautiful background blur perfect for portraits and close-up photos. The large sensor area also enables a marked reduction in noise levels at all ISO values.
1D X 5D Mark III 6D  
Current model(s) listed only.
DIGIC Image Processors
Developed to enhance performance between capturing and recording stages of digital photography, Canon DIGIC chips use advanced signal processing technologies to dramatically augment image quality and deliver a more intuitive, responsive camera. The DIGIC Image Processors work with Canon CMOS sensors to achieve high levels of performance. Signal processing algorithms work with the multi-channel signal from the sensor and the high-speed DDR-SDRAM buffer to deliver significantly improved camera response. Currently, Canon has three image processors available:

  • The Canon DIGIC 5+ Image Processor brings phenomenal increases in processing speed and power. Data processing performance is 17x faster than the Canon DIGIC 4 Image Processor and features new algorithms that promote greater noise reduction at higher ISOs. Improved noise reduction provides greater image quality and a faster processing speed makes it possible to obtain high-quality shots during continuous shooting.


  • The DIGIC 5 Image Processor and DIGIC 4 Image Processor speed up all operations to make a number of inventive features possible, such as Live Face Detection AF, HD video recording, Auto Lighting Optimizer and Lens Peripheral Illumination Correction.


The EOS-1D X features a dedicated DIGIC 4 Image Processor for powering a new sophisticated AE metering system, called EOS iSA (Intelligent Subject Analysis) System.
DIGIC 5+ 1D X 5D Mark III 6D 70D
DIGIC 5 Rebel T5i Rebel SL1
DIGIC 4 7D 60D Rebel T3i Rebel T5
  Rebel T3      
Current model(s) listed only.
Certain images and effects are simulated.
Improved Image Quality
EOS cameras employ 14-bit converters to process the output of the imaging sensor. Compared to the 12-bit converters used in most digital cameras, the Canon design ensures smoother tonal transitions, more natural gradations, and superior color fidelity. RAW images are recorded at 14 bits so that processed 16-bit TIFF images contain the full range of tonal values captured by the sensor.
1D X 5D Mark III 6D 7D 70D
60D Rebel T5i Rebel SL1 Rebel T3i Rebel T5
Rebel T3        
Current model(s) listed only.
Certain images and effects are simulated.
Improved Image Quality
Loss of highlight detail is one of the greatest concerns for photographers shooting digitally in brightly lit and high-contrast situations. Canon’s Highlight Tone Priority function calculates the exposure to ensure that more detail is preserved in highlights. This renders a more continuous tone image without blown highlights, and helps to save time in post-processing for highlight retrieval.

1D X 5D Mark III 6D 7D 70D
60D Rebel T5i Rebel SL1 Rebel T3i Rebel T5
Rebel T3        
Current model(s) listed only.
Certain images and effects are simulated.
Improved Image Quality
Canon’s Auto Lighting Optimizer automatically corrects image exposure to help ensure accurate brightness and contrast. It can actually brighten areas of the composition while maintaining highlight details and accurate exposure in others, or darken areas of the composition while maintaining brightness and shadow details in others. This remarkable feature is available as an automatic feature in a number of shooting modes, and can be used and fine-tuned in other modes. If shooting in RAW mode, Auto Lighting Optimizer can be applied in post-processing. In advanced professional EOS Digital SLRs, it automatically adjusts the image during image processing to obtain favorable brightness and contrast, working with both JPEG and RAW images.
1D X 5D Mark III 6D 7D 70D
60D Rebel T5i Rebel SL1 Rebel T3i Rebel T5
Rebel T3
Current model(s) listed only.
Certain images and effects are simulated.
Improved Image Quality
Chromatic aberration, or color fringing, a common pitfall of digital photography where all colors are not focused through the lens at the exact point on the camera's sensor, can be corrected at the time of shooting with the Lens Aberration Correction feature on select EOS cameras and can be saved and registered to the particular lens. These cameras can even distinguish between different lenses of the same model by supporting registration of serial numbers specific to each lens.
1D X 5D Mark III 6D 70D Rebel T5i
Rebel SL1
Current model(s) listed only.
Certain images and effects are simulated.
Improved Image Quality
Taking into account the lens in use, this feature automatically brightens the light level at the four corners of the composition where light falloff may have occurred. Peripheral illumination characteristics and correction data are detected automatically on a number of Canon lenses and can be entered manually through Canon’s EOS utility software. This function can be applied when shooting to JPEG images, and in post-processing with RAW images using DPP (Digital Photo Professional).
1D X 5D Mark III 6D 7D 70D
60D Rebel T5i Rebel SL1 Rebel T3i Rebel T5
Rebel T3
Current model(s) listed only.
Certain images and effects are simulated.