Photoshop Imac

Finally, while Mac OS X will usually set Photoshop as the default app for opening PSD files (since PSD is Photoshop’s native file format), it still never hurts to check. Plus, if you have multiple versions of Photoshop installed on your computer, it’s worth making sure that your PSD files will open in the newest version, as we're about to see. Windows 8.1 / 10, Mac OS Mojave 10.14, Mac OS Big Sur 11, Mac OS Catalina 10.15 $54.99 Utopia Bedding Printed Comforter Set (Twin/Twin XL,Red) with 1 Pillow Shams - Luxurious Brushed Microfiber - Down Alternative Comforter - Soft and Comfortable - Machine Washable.

Photoshop began life as a program called Display that was made to display grayscale images on a monochrome display. Photoshop has grown to support layers, filters, brushes, text, 3D objects, video, and much others.

In 1987, Thomas Knoll, a PhD student at the University of Michigan, discovered that his new Mac Plus couldn’t display grayscale images on its 1-bit black and white display. Because of this, Thomas began coding a program to do the job.

Grayscale, 1-bit, and dithered images.

Thomas’s brother John, an employee of George Lucas’ Industrial Light & Magic, soon showed interest in the project and recommended that it be developed into a full image editing program; it was at this time that the program was given a name: Display. Thomas took a six-month break from his studies to develop the program.

By 1988, Display had been renamed ImagePro and had enough features that the brothers decided to try to sell it commercially. ImagePro, which by then had been renamed Photoshop, was rejected by every company they came to, aside from Adobe. However a suitable deal was not reached with Adobe, and the brothers struck a temporary deal with scanner company, BarneyScan, to distribute Photoshop under the name BarneyScan XP. The deal was not forever, and when the contract ran out, the brothers returned to Adobe and sold them the wholesale rights in Sept. 1988. The brothers continued to work on the product, and in 1990 Photoshop 1.0 was released.

Version History

Photoshop 1

Photoshop 1 (1990.01) requires a 8 MHz or faster Mac with a color screen and at least 2 MB of RAM. The first release of Photoshop was successful despite some bugs, which were fixed in subsequent updates. Most users ended up using version 1.07. Photoshop was marketed as a tool for the average user, which was reflected in the price ($1,000 compared to competitor Letraset’s ColorStudio, which cost $1,995).

Photoshop 1.x requires Mac System 6.0.3, 2 MB of RAM, a 68000 processor, and a floppy drive.

Photoshop 2

Photoshop 2 (1991.06). Photoshop 2.0 added support for paths, which allow the user to create and manipulate line based drawings.

Photoshop 2.x requires Mac System 6.0.7, 4 MB of RAM, a 68020 processor, 32-bit QuickDraw, and a floppy drive.

Photoshop 2.5

Photoshop 2.5(1992.11) Photoshop 2.5 was the first version to support Microsoft Windows; in November 1993 IRIX and Solaris support was also added. Photoshop 2.5 added palettes and 16-bit support.

Photoshop 3

Layer were introduced in Photoshop 3.0 (1994.09 Mac/1994.11 Windows, Solaris, and IRIX). Layers allow the user to isolate different parts of the image onto different layers and have probably been the most important addition to Photoshop since its release. Also introduced in Photoshop 3.0 were tabbed palettes.

Photoshop 3.x requires Mac System 7.0, 16 MB of RAM, a 68020 processor, 25 MB of available hard drive space, and a floppy drive.

Photoshop 4

Photoshop 4.0 (1996.11) Solaris and IRIX support discontinued. New features introduced in 4.0 were Adjustment layers and macros.

Photoshop 4.x requires Mac System 7.1 (7.1.2 for Power Macintosh),16 MB of RAM, a 68030 processor, 25 MB of available hard drive space, a color monitor with an 8-bit video card, and a CD-ROM drive.

Photoshop 5

Photoshop 5.0 (1998.05) added editable type, the history palette, color management, and the magnetic lasso tool.

Photoshop 5.x requires Mac System 7.5.5, 32 MB of RAM, a G3 processor, and 60 MB of available hard drive space.


Photoshop 5.5

Photoshop 5.5 (1999.02) was the first version of Photoshop to be bundled with ImageReady. It also made the addition of the the Save for Web feature and the extract filter.

Photoshop 6

Photoshop 6.0 (2000.09) updated the interface and added vector shapes, the liquify filter, and the layer styles dialogue box.

Photoshop 6.x requires Mac OS 8.5, 64 MB of RAM (with virtual memory on), a G3 processor, 125 MB of available hard drive space, a color display with 800 x 600 resolution and 8-bit color video, and a CD-ROM drive.

Photoshop Imac

Photoshop 7

Photoshop 7.0 (2002.03) was the first version with Mac OS X support. Photoshop 7.0 made text fully vector, added the healing brush, and updated the painting engine. Photoshop 7.0.1(2002.08) introduced camera RAW 1.x as an optional plugin.

Photoshop Mac Free

Photoshop 7.x requires Mac OS 9.1 or Mac OS X 10.1.3, 128 MB of RAM, a G3 processor, 320 MB of available hard drive space, a color display with 800 x 600 resolution and 16-bit color video, and a CD-ROM drive.

Photoshop 8/CS

Photoshop 8/CS (2003.11) discontinued support for Mac OS 9. New features in Photoshop 8 are the lens blur filter, Camera RAW 2.x, the Shadow/Highlight command, Smart guides, a real-time histogram, a highly modified slice tool, the match color command, Macrovision copy protection, scripting support for Javascript and other languages, and the ability to detect and block images of banknotes.

Photoshop Free

Photoshop 8.x/CS requires Mac OS X 10.2.4, 192 MB of RAM, a G3 processor, 320 MB of available hard drive space, a 1024 x 768 monitor resolution with 16-bit video, and a CD-ROM drive.

Photoshop 9/CS2

Photoshop 9.0 and 9.02/CS2 (2005.02) introduced Smart objects, Image warp, the spot healing brush, the red eye tool, the lens correction filter, smart sharpen, smart guides, Camera 3.x, vanishing point, HDRI (high dynamic range imaging) support, extra smudging options like scattering and improved layer selection which added the ability to select multiple layers. Memory management for 64-bit powerPC G5s was the only major improvement in performance over previous versions.

Photoshop 9.x/CS2 requires Mac OS X 10.2.8, 320 MB of RAM, a G3 processor, 750 MB of available hard drive space, a 1024 x 768 monitor resolution with 16-bit video, and a CD-ROM drive.

Photoshop 10/CS3

Photoshop 10/CS3 (2007.04.16) added native support for Intel Macs and improved launch times over previous versions. Photoshop CS3 no longer includes ImageReady, a program that had been bundled with Photoshop since version 5. Improvements in Photoshop CS3 include the Quick Select tool, smart filters, improvements to cloning and healing, Auto Align and Auto Heal, more complete HDRI support, a revised user interface, black and white conversion adjustment, mobile device graphic optimization, Alterations to Curves, Vanishing Point, Channel Mixer, Brightness and Contrast, and the Print dialog.

Photoshop 10.x/CS3, requires Mac OS X 10.4.8, 512 MB of RAM, a G4 processor, 2 GB of available hard drive space, a 1024 x 768 monitor resolution with 16-bit video and 64 MB of VRAM, and a DVD-ROM drive.

The first version of this FAQ was written by Matt Pearce in 1998.

Sources/Further Reading

  • The History of Photoshop, Computer Arts, 2005
  • How Adobe’s Photoshop Was Born, Tom Hormby, Silicon User, 2007.06.05
  • Adobe Photoshop 5.0: The Best Gets Better, John Henshall, 1998
  • From Darkroom to Desktop – How Photoshop Came to Light, Derrick Story, Story Photography, 2000.02.18
  • AppleMasters – John Knoll, Apple, 1999
  • Family Ties Inspire Alumnus to Develop the World’s Most Popular Photo Software, Michigan Engineering, Fall/Winter 1998/99
  • Adobe Photoshop, Wikipedia

Keywords: #photoshop

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The king of image editors

Adobe Photoshop is the reference app when it comes to image editing and many years at the top haven’t dimmed its shine. It’s also a serious app: Photoshop has a steep learning curve and will take practice, often over many years, to get to grips with. For the average user is Photoshop the best option or is it just more power than most people need?

The last word in photo editing

Hands-down the best all-round image editing app

Adobe Photoshop is a powerhouse of an app and has had many years on the market to refine and improve its features. It’s paid off, as few people would deny that Photoshop is the app of reference when it comes to image editing. It’s never been considered accessible and other apps have sought to take advantage of this by launching competing software offering specific Photoshop features (and the occasional app trying to recreate all of Photoshop’s features.

As a result, for many people, the question is: do I opt for Photoshop or do I save effort and money by trying out one of the many alternatives? One thing that is undeniable: Photoshop is the photo editing and all-round image editing app par excellence. If you are specifically looking to edit photos or you regularly need to carry out a wide variety of assorted edits to images, Photoshop offers exactly the features, power, and control you’ll need.

Now, harnessing these powerful features isn't an easy task. It typically takes users dozens of hours to learn how to use Photoshop and even longer to learn how to use it well. Luckily, people have been having a similar problem for decades, so modern users will be able to take advantage of the huge quantity of user-generated and official support documents, videos, and tutorials that have grown over the years.

Bear in mind, however, that Photoshop has been updated many times in this period and older material might be difficult to relate to if you’re using a recent version of the app.

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If you’re not an enthusiastic photo editor or you typically use a smaller number of editing tools, the fact that Photoshop takes so much practice and is so intensive on your computer’s resources (older and less powerful Macs will have a hard time keeping up), it might be more practical to look towards another app that isn’t quite so focussed on all-round greatness. It will be easier on your brain and your computer.

Where can you run this program?

This version of Photoshop runs on Mac, version 10.12 or later (Sierra). There is also a version for Windows.

Is there a better alternative?

In terms of an all-round image editing app or photo editor, no: Photoshop is the best. Users should bear in mind, however, that not everyone needs an all-around app or powerful photo editor. If you think that your needs might allow more flexibility, check out Krita or Corel Painter, which are both less resource-intensive, have a shorter learning curve, and offer more specific features than Photoshop. If you’re looking for a free all-around option, try GIMP. It might meet your needs but isn’t the polished hero that Photoshop is.

Our take

Ever heard the expression “With great power comes great responsibility”? It might have originally referred to politics and royalty, but it also describes Photoshop perfectly. It is king of the photo editors but takes serious effort (and RAM) to use properly. Make sure that you really need Photoshop before jumping in.

Should you download it?

If you need Photoshop beyond a doubt, then it’s a definite download.


  • Very powerful app
  • Excellent photo editing options
  • Highly customizable interface
  • Lots of user help and documentation


  • Simply not necessary for many users
  • Steep learning curve
  • Uses a lot of memory and tough on less powerful computers

Adobe Photoshopfor Mac

2021 22.3

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