Just like version 1.0, the second version was also an exclusively Mac affair. However, this all changed when 2.5 hit the market in November of 1992 - Photoshop had made its Windows debut. The other most significant feature added to 2.5 was support for 16-bit file types.
Just Like An Onion - Adobe Photoshop 3.0
Codenamed Tiger Mountain, 1994's Photoshop 3.0 for both Windows and Mac saw the introduction of one of the programs most fundamental features: layers.
Layers made the work of many a photographer and designer easier, and although Photoshop was not the first image editing program to introduce layers, it most definitely made them a commonplace feature for any graphic software package worth its salt.
Despite now being over 20 years old, some users just haven't let go. Back in 2008 a cover of the New Yorker was created with Photoshop 3.0 - and not for retro-appeal, just because the illustrator loved version 3.0 so much.
Meow - Adobe Photoshop 4.0
Two years after 3.0 arrived, its big brother - codenamed Big Electric Cat - hit shelves. Version 4.0 introduced adjustment layers and macros (known as Actions). The addition of Actions allowed for the automation of generic tasks, adding again to the time-saving appeal of the Photoshop product.
Photoshop 4.0 also saw several interface changes, bringing it more in line with other Adobe products.
Lasso That Cargo - Adobe Photoshop 5.0
During May, 1998, Adobe shipped Photoshop 5.0, known as Strange Cargo while in development. With it came such important features as the Magnetic Lasso, editable type, and the History panel.
The History panel allowed the user to undo an action multiple times to reach an earlier state - handy stuff!
1999's version 5.5 release saw the addition of Save For Web, a feature added specifically to format images for the Web, resulting in better compression
Shiny shiny: Adobe Photoshop 6.0
Codenamed Venus In Furs, the first major release of the new millenium was version 6.0, which hit the shelves in September 2000.
Changes and new features introduced in this version include various changes to the user interface, the Liquify filter, Vector Shape support, and improvements to layer styles interface, to name a few.
Adding to the web-friendly features introduced in 5.5, version 6.0 added layer-based slicing - handy for web-layout work.
Paint The Sky - Adobe Photoshop 7.0
Version 7.0 of Photoshop, codenamed Liquid Sky, arrived in 2002.
It was the last major version with a numerical-only suffix, and also the last to run on the classic Mac OS 9. In 2003 Adobe released the Camera RAW plugin for Photoshop 7.0, adding the ability to manipulate digital data from an ever-growing range of cameras.
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