<span style="font-size: 12pt; font-family: 'Times New Roman'; mso-fareast-font-family: SimSun; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"]


<span style="font-size: 12pt; font-family: 'Times New Roman'; mso-fareast-font-family: SimSun; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA;"]I went out did some shooting last weekend, and most of the pictures had these random pixels either much brighter or much darker than the surrounding pixels. <span style="mso-spacerun: yes;"]All pictures were taken with my 40D and 70-200 f4 IS with ISO between 100-320.<span style="mso-spacerun: yes;"] The problem is clearly shown in the following example (original picture enlarged to 300% for better viewing). <span style="mso-spacerun: yes;"]Can anyone please tell me what this is?
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