Thankfully, it’s easy (though not especially convenient) to switch between the 32-bit and 64-bit versions of the program just select the application icon, choose File->Get Info, turn on the 32-bit option, and relaunch Photoshop. Moreover, most third-party plug-ins too will work only in 32-bit mode, until they are updated. Unfortunately, to accommodate the new programming code that allows for 64-bit processing, some plug-ins and filters-the built-in Variations and Lighting Effects, for example-only work in 32-bit mode, and that surely will disappoint some users. That said, if you’re the proud parent of one of the newest Macs (with faster video cards), the program should run faster. However, the speed increase is barely noticeable if you’re running OS X 10.5 (Leopard), though more so in OS X 10.6 (Snow Leopard). For end users, this means Photoshop can now open and edit super-huge files-those over 4GB-as well as utilize more memory (RAM), the latter making the program feel zippier. To say that the programming team had its hands full in making Photoshop 64-bit compatible is an understatement-the program had to be rewritten from the ground up.
Add it all up and you’ve got an upgrade that’s not only worth the cost, it’s one you can’t afford to skip.
Merging multiple exposures into one also got easier with the new Merge to HDR Pro option, and the list goes on. Other enhancements include a redesigned Refine Edge dialog box whose new Smart Radius feature makes selecting things like hair and fur easier than ever before and an improved Lens Correction filter that utilizes camera profiles that you download or create yourself.
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