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photoshop 1.0
this was the first photoshop made -
Photoshop 2.0
Photoshop 2.0 included the Path feature, which allowed users to trim around an object easily and to save that path for future use -
Photoshop 3.0
the new thing in photoshop 3.0 was the layers -
Photoshop 4.0
Adjustment layers and macros were the two most notable features of Photoshop 4.0. -
photoshop 5.0
The two most important features released with 5.0 were editable type and the ability to undo actions multiple times in the “History” palette. -
Photoshop 6.0
The layer styles panel made working with layers even easier in Photoshop 6. Vector shapes were also added in this release; the ability to draw vector shapes such as arrows into a bitmap was lauded by users. -
Photoshop 7.0
Version 7.0 introduced the healing brush and text that was fully vector-based. -
Photoshop CS
Photoshop CS was the first to employ the CDS (counterfeit deterrence system) which recognized and refused to allow duplication of paper currency. -
Photoshop CS2
The red eye removal tool, previously exclusive to Elements, was popular enough to make an appearance in the core version of Photoshop. -
Photoshop CS3
The most notable new feature was graphic optimization for mobile devices -
Photoshop CS4
The Masks and Adjustments panel was added. CS 4 also dealt with edges on masks more effectively. Colour correction took a huge step forward with this release. -
Photoshop CS5
CS5 introduces new tools such as the Content-Aware Fill, Refine Edge, Mixer Brush, Bristle Tips and Puppet Warp. -
Photoshop CS6
added new creative design tools and provided a redesigned interface with a focus on enhanced performance.