Picnik's online photo-editing site is getting gradually more sophisticated. (Credit: Picnik)
A higher-end feature on desktop photo-editing software, the ability to edit a photo's tone curve, is now on the Picnik online photo-editing site.
Online photo editing has just taken a significant step closer to its computer-based predecessors: Picnik has added a curves editing feature.
Curves, one of the early killer features that drew people to Adobe Systems' Photoshop, lets people adjust in detail the distribution of light and dark tones in photographs. For example, it can be used to bring details out of shadowy murk or carefully increase contrast.
Curves editing is reserved for those with premium accounts, which cost US$24.95 a year. Although this reporter has not tried out the feature, it looks like it can edit red, green, and blue channels separately.