Canon XSi/450D

Highlight Tone Priority

Highlight Tone Priority sounds impressive. But use it sparingly, if at all, on the Canon Rebel XSi/450D.

When initially reading about highlight tone priority, it sounded like the best thing since sliced bread. Not in my experience. Don’t get me wrong, some photographers praise the feature and keep it enabled. I do not.

Purpose of Highlight Tone Priority

The purpose of HTP is to minimize blown (washed out) highlights when taking photos in brightly lit scenes. HTP is said to bring out more detail and dynamic range in highlighted areas. The gradation between grays and highlights become smoother.

But the feature also creates more noise in the shadow areas than if the photo was taken with HTP disabled.

Increased noise and HTP

I take most of my photos in bright, outside light, so I originally turned on HTP to use as a default setting. But after using it for several weeks, I disabled it and prefer to adjust Exposure Compensation instead.

I personally find that increased noise in dark areas of a photo when using HTP is unacceptable. The degree of noise becomes even more apparent when adjusting an image with a tool such as Photoshop’s Shadow/Highlight.

Even the XSi/450D manual warns of increased noise in underexposed areas when HTP is used. I just wasn’t prepared for how much noise there could be. It can be quite strong and undesirable at times.

Increased noise is NOT a reason I bought a DSLR.

Assess a scene before enabling HTP

Before enabling highlight tone priority, I examine the scene. If it contains high contrast areas with strong highlights and deep shadow, I avoid using it. HTP works best for low contrast scenes.

HTP is most useful when photographing scenes such as water, white clouds and snow. Some wedding photographers swear by HTP and use it to bring out detail in white gowns and flowers.

For scenes where the the brightness of lighting changes, such as on a sunny day with lots of clouds in the sky, I stick with Exposure Compensation. Exposue Compensation has a dedicated button on the XSi that is faster to access than wading through the menus to get to the Highlight Tone Priority setting.


  • I agree with you. I use HTP and found the indoor shooting was ruined by the noise on the shadow area.

  • Thank you for confirming my fears / concerns. 
    I was tinkering around with Highlight Tone Priority on my  Canon Rebel XSI and found some advantages.  Today I went out birding and purposely left the HTP enabled thinking my photos of Snowy Egrets would have more detail in the highlight areas.  There were more species of birds than I had ever seen.  Anyway the day (which could have been spectacular)  was ruined due to noise!!!  Word to the wise… Do not use HTP unless you know the pros and cons for you particular application.  Good Luck.

  • “I personally find that increased noise in dark areas of a photo when using HTP is unacceptable.”      

    thank you!!!  been all over the net for this answer.