Need Help: Canon DPP Noice Reduction terms

Started Mar 14, 2009 | Discussions thread
OP tmyuen Regular Member • Posts: 183
Re: Color noise vs luminance noise

AdriaanMeijer,

Thanks for the response. Now I have better understanding of the terms.

If I may, I would like to ask a few more questions: What causes those noises (Luminance and Color) to be introduced in the image? the lens, the CCD/CMOS sensor, or high ISO setting? Is there any way to avoid those noises when taking photos?

BTW, these noise things come to my attention when I recently shot a few photos with the Highlight Tone Priority feature enabled on my Canon 450D. The IQ is obviously affected by those noises so one lesson I learned is to disable the feature unless absolutely needed. But are there other pitfalls that I should avoid?

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