I initially wrote this post in July 2010. Today, I updated it with information regarding Photoshop CS6 and OSX 10.8.2 Mountain Lion.
I’ve always preferred doing my scanning from within Photoshop, since it offers a fuller range of control than most scanner software. It obviously interprets the RGB data extremely well. After turning on the scanner, launch Photoshop and scroll down the FILE menu to IMPORT, where you will see either the TWAIN option or the actual name of your scanner. That’s your ticket to scanning success.
In 2010, when I upgraded to from CS3 to CS5 and Snow Leopard, I was no longer able to scan from within Photoshop. At first, I thought Adobe had simply moved the menu item to another spot, but quickly realized that it simply wasn’t there any longer. I was able to use the scanner software easily enough, and the scan was moderately good quality. Yet, I was still dissatisfied, so I did some research and discovered a few interesting things, which solved the problem:
- Make sure you have the latest version of the scanner driver and software. The manufacturer will often provide downloadable files for free on their websites.
Without the current driver, curious things may happen: I was unable to see the preview in CS6 until I installed the newest driver.
- On some discussion boards, people mentioned that CS5 cannot handle 64-bit scanning settings. To solve this, find the Photoshop CS5 file icon, Get Info (Command-I or FILE > GET INFO), and select “Open in 32-bit mode”. It’s important that you do this, because Adobe CS5 does not support 64-bit TWAIN scanners in either 64-bit or 32-bit Photoshop, and says “use at your own risk”. CS6 only runs in 64-bit mode: if your scanner driver can’t handle 64-bit mode, you may not be able to use TWAIN. My Canon PIXMA does work well in both modes, so I am fortunate.
- CS6 does not install several legacy (pre-CS4) plug-ins, extensions, and presets, including TWAIN. You can download the optional TWAIN plug-in at the Adobe website, for Windows or Mac OS. The CS6 plug-in supports 64-bit, while the CS5 plug-in supports 32-bit, on both Windows and Mac OS platforms, as well as 64-bit using Mac OS 10.6. For CS6, I placed the TWAIN.plugin file inside my Photoshop Plug-ins folder. For CS5, I placed the “32bit_only” folder (which contains TWAIN and other goodies) inside my Photoshop Plug-ins folder. Then I restarted Photoshop. Voila! Problem solved!
Note that TWAIN is available on the Windows platform only in 32-bit mode:
In Windows, the Photoshop TWAIN plug-in can be used if you run Photoshop CS6 in 32-bit mode. TWAIN is not supported in Photoshop when it’s run in 64-bit mode. If you need a scanning solution when you run Photoshop CS6 in 64-bit mode, use the WIA (Windows Image Acquisition) interface for your device, if it’s available. WIA is also available for use when running Photoshop in 32-bit mode. Contact your scanner manufacturer for more information.
After putting the TWAIN plug-in inside your Photoshop plug-ins folder, open Photoshop the usual way, but in 32-bit mode.
Adobe’s “HELP PAGE” on this subject is very useful, if you’d like more information.
Share with us what steps you took to solve this problem.