Note. For and images, face lighting can be adjusted in [ : RAW processing (RAW/DPRAW)] (). To enable [ : Auto Lighting Optimizer] to be set even in [ ] and [ ] modes, press the button in step 2 to clear the checkmark [ ] for [Disabled in M or B modes].. Auto Lighting Optimizer (ALO) was introduced as a feature on the EOS 450D in 2008 and is included on all Canon EOS DSLR and mirrorless cameras since. The aim of ALO is to improve the look of your images through in-camera processing. ALO is designed to reduce excessive contrast by selectively adjusting areas of the image.
Canon Auto Lighting Optimizer keeps details clear by balancing the dark and light parts of your photo. It also adjusts saturation and contrast to make the photos look more vibrant. Less digital noise. ALO can brighten your photo without making the highlights too bright. This helps reduce noise while improving the photo's contrast.. Conclusion: Auto Lighting Optimizer for Canon. Canon's Auto Lighting Optimizer helps keep the detail in shadows intact. The setting is ideal for JPEGs and tricky lighting scenarios but is best left off when the lighting is good. The Highlight Tone Priority does the opposite and preserves the highlights.