Version history of Photoshop


Version history of Photoshop 
Adobe has published thirteen versions before Photoshop CS1.

Photoshop CS1
The first Photoshop CS was commercially released in October 2003.Photoshop CS increased user control with a reworked file browser augmenting search versatility, sorting and sharing capabilities and the Histogram Palette which monitors changes in the image as they are made to the document. Match Color was also introduced in CS, which reads color data to achieve a uniform expression throughout a series of pictures.

Photoshop CS2 
Photoshop CS2, released in May 2005, expanded on its predecessor with a new set of tools and features. It included an upgraded Spot Healing Brush, which is mainly used for handling common photographic problems such as blemishes, red-eye, noise, blurring and lens distortion.One of the most significant inclusions in CS2 was the implementation of Smart Objects, which allows users to scale and transform images and vector illustrations without losing image quality, as well as create linked duplicates of embedded graphics so that a single edit updates across multiple iterations.
Adobe responded to feedback from the professional media industry by implementing non-destructive editing as well as the producing and modifying of 32-Bit High Dynamic Range (HDR) images, which are optimal for 3D rendering and advanced compositing. FireWire Previews could also be viewed on a monitor via a direct export feature.
Photoshop CS2 brought the Vanishing Point and Image Warping tools. Vanishing Point makes tedious graphic and photo retouching endeavors much simpler by letting users clone, paint and transform image objects while maintaining visual perspective. Image Warping makes it easy to digitally distort an image into a shape by choosing on-demand presets or by dragging control points.
The File Browser was upgraded to Adobe Bridge, which functioned as a hub for productivity, imagery and creativity, providing multi-view file browsing and smooth cross-product integration across Adobe Creative Suite 2 software.Adobe Bridge also provided access to Adobe Stock Photos, a new stock photography service that offered users one-stop shopping across five elite stock image providers to deliver high-quality, royalty-free images for layout and design.
Camera Raw version 3.0 was a new addition in CS2, and it allowed settings for multiple raw files to be modified simultaneously. In addition, processing multiple raw files to other formats including JPEG, TIFF, DNG or PSD, could be done in the background without executing Photoshop itself.
Photoshop CS2 brought a streamlined interface, making it easier to access features for specific instances. In CS2 users were also given the ability to create their own custom presets, which was meant to save time and increase productivity.

Photoshop CS3
Smart Objects display filters without altering the original image (here on Mac OS X)
CS3 improves on features from previous versions of Photoshop and introduces new tools. One of the most significant is the streamline interface which allows increased performance, speed, and efficiency. There is also improved support for Camera RAW files which allow users to process images with higher speed and conversion quality. CS3 supports over 150 RAW formats as well as JPEG, TIFF and PDF.
Enhancements were made to the Black and White Conversion, Brightness and Contrast Adjustment and Vanishing Point Module tools. The Black and White adjustment option improves control over manual grayscale conversions with a dialog box similar to that of Channel Mixer. There is more control over print options and better management with Adobe Bridge. The Clone Source palette is introduced, adding more options to the clone stamp tool.Other features include the nondestructive Smart Filters, optimizing graphics for mobile devices,Fill Light and Dust Busting tools.[46] Compositing is assisted with Photoshop's new Quick Selection and Refine Edge tools and improved image stitching technology.
CS3 Extended includes everything in CS3 and additional features. There are tools for 3D graphic file formats, video enhancement and animation, and comprehensive image measurement and analysis tools with DICOM file support.
 The 3D graphic formats allow 3D content to be incorporated into 2D compositions. As for video editing, CS3 supports layers and video formatting so users can edit video files per frame.
CS3 and CS3 Extended were released in April 2007 to the United States and Canada.[46] They were also made available through Adobe’s online store and Adobe Authorized Resellers. Both CS3 and CS3 Extended are offered as either a stand-alone application or feature of Adobe Creative Suite.The price for CS3 is US$649 and the extended version is US$999. Both products are compatible with Intel-based Macs and PowerPCs, supporting Windows XP and Windows Vista.CS3 is the first release of Photoshop that will run natively on Macs with Intel processors: previous versions can only run through the translation layer Rosetta, and will not run at all on Macs running OS X 10.7 or later.


Photoshop CS4 
CS4 features smoother panning and zooming, allowing faster image editing at a high magnification. The interface is more simplified with its tab-based interface making it cleaner to work with. Photoshop CS4 features a new 3D engine allowing the conversion of gradient maps to 3D objects, adding depth to layers and text, and getting print-quality output with the new ray-tracing rendering engine. It supports common 3D formats; the new Adjustment and Mask Panels; Content-aware scaling (seam carving); Fluid Canvas Rotation and File display options. The Content-aware scaling allows users to intelligently size and scale images, and the Canvas Rotation tool makes it easier to rotate and edit images from any angle.
Adobe released Photoshop CS4 Extended, which has the features of Adobe Photoshop CS4, plus capabilities for scientific imaging, 3D, motion graphics,accurate image analysis and high-end film and video users. The faster 3D engine allows users to paint directly on 3D models, wrap 2D images around 3D shapes and animate 3D objects. As the successor to Photoshop CS3, Photoshop CS4 is the first x64 edition of Photoshop on consumer computers for Windows. The color correction tool has also been improved significantly.
CS4 and CS4 Extended were released on 15 October 2008.They were also made available through Adobe’s online store and Adobe Authorized Resellers.Both CS4 and CS4 Extended are offered as either a stand-alone application or feature of Adobe Creative Suite. The price for CS4 is US$699 and the extended version is US$999. Both products are compatible with Intel-based Mac OS X and PowerPCs, supporting Windows XP and Windows Vista.


Photoshop CS5
A 2D landscape designed in Adobe Photoshop CS5 Extended.
Photoshop CS5 was launched on 12 April 2010.[54] In a video posted on its official Facebook page, the development team revealed the new technologies under development, including three-dimensional brushes and warping tools.
In May 2011, Adobe Creative Suite 5.5 (CS5.5) was released, with new versions of some of the applications. Its version of Photoshop, 12.1, is identical to the concurrently released update for Photoshop CS5, version 12.0.4, except for support for the new subscription pricing that was introduced with CS5.5.

CS5 introduces new tools such as the Content-Aware Fill, Refine Edge, Mixer Brush, Bristle Tips and Puppet Warp.The community also had a hand in the additions made to CS5 as 30 new features and improvements were included by request.These include automatic image straightening, the Rule-of-Thirds cropping tool, color pickup and saving an 16-bit image as a JPEG.Another feature includes the Adobe Mini Bridge which allows for efficient file browsing and management.
CS5 Extended includes everything in CS5 plus features in 3D and video editing. A new materials library was added, providing more options such as Chrome, Glass, and Cork.The new Shadow Catcher tool can be used to further enhance 3D objects. For motion graphics, the tools can be applied to over more than one frame in a video sequence.
CS5 and CS5 Extended were made available through Adobe's online store, Adobe Authorized Resellers and Adobe direct sales. Both CS5 and CS5 Extended are offered as either a stand-alone application or feature of Adobe Creative Suite 5. The price for CS5 is US$699 and the extended version is US$999. Both products are compatible with Intel-based Mac OS and Windows XP, Windows Vista, and Windows 7.

Photoshop CS6
Photoshop CS6, released in May 2012, added new creative design tools and provided a redesigned interface with a focus on enhanced performance. New features have been added to the Content-Aware tool such as the Content-Aware Patch and Content-Aware Move.
Adobe Photoshop CS6 brought a suite of tools for video editing. Color and exposure adjustments, as well as layers, are among a few things that are featured in this new editor. Upon completion of editing, the user is presented with a handful of options of exporting into a few popular formats.
CS6 brings the "straighten" tool to Photoshop, where a user simply draws a line anywhere on an image, and the canvas will reorient itself so that the line drawn becomes horizontal, and adjusts the media accordingly. This was created with the intention that users will draw a line parallel to a plane in the image, and reorient the image to that plane to easier achieve certain perspectives.
CS6 allows background saving, which means that while another document is compiling and archiving itself, it is possible to simultaneously edit an image. CS6 also features a customizable auto-save feature, preventing any work from being lost.
Adobe has responded to feedback from graphic designers and has modified the User Interface accordingly. Now, it boasts a more unified, static look, and is easier to keep track of all the palettes and documents.
Photoshop CS6 was released on May 7, 2012. The price for CS6 is US$699 and the extended version is US$999.

Photoshop Touch
Photoshop Touch on the 3rd generation iPad.
This section requires expansion. (June 2012)
Photoshop Touch is an application designed specifically for tablets and touchscreen devices. It includes many of the features of the personal computer version, including layers, selection tools, adjustments, and filters. Edited files can be synced with Adobe Creative Cloud. Photoshop touch is currently available on iOS and Android. The iOS versions support only the iPad (all generations), Android versions can be installed on any recent Android handset.