Not sure if this helps
Source
https://helpx.adobe.com/photoshop/kb/photoshop-cs6-hidpi-retina-display.html [h=2]Photoshop CS6 (Mac only)[/h]
HiDPI support is added to Photoshop 13.1 (Subscription Edition) and 13.0.2 for Mac OS perpetual license customers. Camera Raw 8.1 adds HiDPI support under Photoshop CS6 as well.
Besides a higher resolution user interface and image display, what changes can I expect?
There are a few notable changes in commands, shortcuts, and behaviors, which are outlined below:
New or changed commands
- Actual Pixels is now 100% in the View menu, Zoom Tool Options panel, and Keyboard Shortcuts dialog box.
- The View menu now contains 200%.
New shortcuts
- Cmd + double-click (Mac OS) Ctrl + double-click (Win) the zoom tool icon - zooms current window to 200%.
- Shift + Cmd + double-click (Mac OS) Shift + Ctrl + double-click (Win) the zoom tool icons - zooms all windows to 200%.
- Canvas context menu now includes 200% when using the zoom tool or Hand tool.
- You can assign a custom shortcut to View > 200% by selecting Edit > Keyboard Shortcuts to open the Keyboard Shortcuts dialog box.
New behaviors
- In multi-monitor environments, dragging a window from a HiDPI screen to a non-HiDPI monitor automatically adjusts the window zooming to a reasonable amount. The behavior helps avoid an overly large window and avoid excessive redraw.
What operating systems does Photoshop CS6 support for native HiDPI?
Currently, Mac OS X 10.7.x and 10.8.x operating systems are supported for use with HiDPI hardware including the Retina Display available on the new MacBook Pros. HiDIPI support is expected to be available in the future on additional operating systems and devices.
Is HiDPI support provided for versions of Photoshop earlier than Photoshop CS6?
No, there are no plans to provide HiDPI support for versions of Photoshop earlier than Photoshop CS6.
Are all Photoshop Plug-ins now HiDPI-compatible?
The default set of plug-ins included with Photoshop CS6, including Adobe Camera Raw 7.x and Liquify, have not been updated to provide HiDPI support. Adobe hopes to provide support in the future.
Contact third-party plug-in vendors for HiDPI compatibility updates for their specific plug-ins.
Are there compatibility updates for Bridge CS6 to provide HiDPI and Retina Display support?
Not at this time. Adobe hopes to include HiDPI support for Bridge in the future.