Adobe Photoshop CS4 to be 64-Bit for Windows, 32-Bit for Mac
Adobe's John Nack writes about the future plans for Adobe Photoshop CS4 and CS5, revealing that Adobe Photoshop CS4 will include 64-Bit support, but for Windows only. The Mac version of CS4 will remain at 32-Bit. The reason for the discrepancy, however, is not due to a lack of interest or support from Adobe, but for more practical reasons.
First off, Nack admits that the 64-bit version of Photoshop will see modest speed increases (8-12%) but the biggest advantage will be for those using massive images (a 3.375 gigapixel image is given as an example). With these massive sizes and with enough RAM (32GB given as example), you can see substantial (10x) improvements.
Adobe expects that Mac users will have to wait until CS5 before getting full 64-bit support. The reason for this delay is due to Apple's abrupt dropping of Carbon 64-bit support:
At the WWDC show last June, however, Adobe & other developers learned that Apple had decided to stop their Carbon 64 efforts. This means that 64-bit Mac apps need to be written to use Cocoa (as Lightroom is) instead of Carbon. This means that we'll need to rewrite large parts of Photoshop and its plug-ins (potentially affecting over a million lines of code) to move it from Carbon to Cocoa.
Nack reports that they started working on the transition immediately after the announcement but due to the scope of the transition are unable to deliver it by CS4. He also tries to dispel the notion that Cocoa alone will produce a higher quality product than Carbon:
Most Mac users don't know Cocoa from Ovaltine, and nor should they: it's just an implementation detail, not a measure of quality. I think Brent Simmons, creator of wonderful Cocoa apps like NetNewsWire, put it most elegantly: "Finder + Cocoa = Finder." That is, rewriting one's app in Cocoa doesn't somehow automatically improve its speed, usability, or feature set.
Popular Stories
Following over three months of beta testing, iOS 18 was finally widely released to the public on Monday, September 16. The update is available in the Settings app under General → Software Update on the iPhone XS and newer. Below, we have highlighted eight key new features included in iOS 18, and Apple shared a complete list of new features and changes last week. Note that Apple...
It's that time of year again. Apple is about to release iOS 18, which promises to bring a range of new features and improvements to iPhones worldwide. It's Apple's biggest software update of the year, and the company is expected to release it sometime today – Monday, September 16. Based on past releases, the update is likely to drop at around 10:00 a.m. Pacific Time/1:00 p.m. Eastern...
Apple will likely hold another event in October this year to announce new Macs and iPads. If so, it would be the fourth time in the last five years that Apple has held an event in October. Last year, Apple held a virtual event on Monday, October 30 to announce new MacBook Pro and iMac models with the M3 series of chips. In his Power On newsletter today, Bloomberg's Mark Gurman reiterated...
Apple has seemingly leaked the rumored next-generation Mac mini with five USB-C ports, according to a code change within Apple software that was discovered today by MacRumors contributor Aaron Perris. The code refers to an unreleased Mac mini model with an Apple silicon chip and five ports, which lines up with a previous report from Bloomberg's Mark Gurman that said the next Mac mini will be ...
Apple analyst Ming-Chi Kuo today said demand for the iPhone 16 Pro and iPhone 16 Pro Max has been "lower than expected" since the devices became available to pre-order in the U.S. and dozens of other countries on Friday. Kuo said his data is based on a "supply chain survey" and shipping estimates listed on Apple's online store. Kuo estimated that sales of all four iPhone 16 models reached...
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models simultaneously, which is why we sometimes get rumored feature leaks so far ahead of launch. The iPhone 17 series is no different – already we have some idea of what to expect from Apple's 2025 smartphone lineup. If you plan to skip...
