There's just enough that's better in the CS4 updates to Photoshop and Photoshop Extended most notably, usability
improvements for core features that many people will find themselves
sighing, biting the bullet, and upgrading. If you work with video or 3D,
or want to update your Creative Suite to CS4 for other reasons, this is
a no brainer; for the rest of us, there's little you can do with CS4
that you couldn't do with CS3, and the latter seems a bit faster and
more memory efficient in some respects.
The
Web abounds with complaints about Adobe's installer and updater, and I
think most are quite justified. Every Windows application installer
suggests you close any running applications, but you can usually ignore
it and 99 percent of the time everything works out fine. Adobe forces
you to close your browser and all Microsoft Office applications,
because many of the programs in the suite primarily Acrobat spread
octopus like tentacles throughout your working environment. That's
pretty appalling in and of itself, but in addition to wasting a large
chunk of time installing, you can't do anything else but play Solitaire
while it's happening. And as before with the updater, you'll get to
relive this delightful close your apps or else experience on a regular
basis. Even as I type it's stopped dead waiting for me to close Firefox.
Plus, the installation "progress" bar bears no relation to reality
whatsoever, with its two steps forward and one step back movement. Over
and over again. All of this adds up to a one-point demerit for Adobe on
its Setup and Interface rating.
Adobe Photoshop CS4
Extended users will benefit more immediately from these underlying
changes than Standard users. For the latter, OpenGL support primarily
manifests itself as some whizzy screen zooming and rotation tools that
demo well but likely won't get used much. However, Adobe has greatly
improved Extended's 3D support. It now offers most of the essential
render settings and view controls, plus the ability to create primitives
(and extend the library of primitives), necessary to work with 3D
models. You edit and paint on textures simply by double-clicking on them
in the Layers palette, then see your changes applied when you toggle
back to the model; not quite real-time, interactive painting, but close
enough for now. And now there's basic keyframe animation for 3D scenes.
Still there's room for improvement: it needs better lighting handling
and the ability to tile and more easily position textures, and several
aspects of the interface, like the Rendering options, are still far too
dialog driven. And Photoshop gets very slow when you load (or generate
via the Mesh from grayscale command) relatively complex models with tens
of thousands of polygons.
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