The Robservatory

Robservations on everything…

 

retina

The new scaled Retina MacBook

I stopped by the Apple Store today to look at the Apple Watch (summary: amazing tech, but it’s a watch, yawn) and the new ultralight MacBook, which is potentially much more interesting to me than a watch.

I spent some time typing (definitely less travel and firmer, but felt fine to me), and looking at the colors (silver—boring, gold—schlocky, space gray—omg perfect!). Speed for simple tasks seemed more than fine, though I’d hate to push it with Motion or Final Cut or anything like that. It’s definitely amazingly thin and light.

But the thing I really wanted to look at was the screen. This is a retina device, with a stated screen resolution of 2304×1440. On the MacBook Pro side of the fence, each of the stated pixel values is halved to get the effective ultra-sharp resolution you’ll see in the machine’s default mode. The 13″ rMBP’s 2560×1600 screen is effectively 1280×800 as shipped; the 15″ rMBP’s 2880×1800 gets you 1440×900. In both cases, each full-resolution dimension is halved to find the default usable screen resolution.

Given that the new MacBook’s screen is 2304×1440, I was expecting to see the display effectively at 1152×720. This is less than you get on an 11″ Air (1366×768), which is odd given the larger screen. I was curious how it would look. I should however, have read Jason’s reviewer’s notebook before heading to the store, as he points out that this isn’t the case.

(more…)

Seeking clarity in Retina iMac desktop images

I’ll admit it: I’m a desktop image (nee wallpaper) addict. I love to use a wide variety of images, and change them often throughout the day, just to keep my work environment fresh. On my two external displays, I use iPhoto images—general photos on one, kid pictures on the other. But for the main iMac screen, I prefer to use photos taken by others—typically stunning landscapes and cityscapes from all over the world.

With the arrival of my 5K iMac, however, my existing collection was no longer sufficient. Yes, they were all 2560×1440 images, which matches the “apparent” resolution of the Retina iMac. But in order to make that image fill the Retina iMac’s screen, it’s first scaled up to 5120×2880, then displayed by OS X at 2560×1440. As a result, my desktop images aren’t nearly as sharp looking as they were on my old 27″ iMac’s display.

As an example, here’s a segment of two versions (2560×1440 and 5120×2880) of the Sydney Skyline, as screen-captured when set as my Retina iMac’s desktop picture. As you move the divider bar right, you’re revealing more of the 2560px version; move it left, and the 5120px version takes over.

After scrolling back and forth a bit, you might be thinking these pictures are identical, and I’m just seeing things. While I may be seeing things, the pictures are not identical. (Compare some closely-spaced lights and the crispness of vertical lines in each image to spot the differences.)

Read on for a closer look at the image, which really shows what you’re losing by using a 2560x1440px desktop image on a Retina Mac…as well as a list of places I’ve found that have 5120x2880px images available.

(more…)

How I configured my 5K TV with bundled computer

After seeing the new iMac with Retina 5K display (I’m just going to call it a Retina iMac from here on out, or even riMac for short), I decided it was time to upgrade my aging but still oh-so-functional mid-2011 27″ iMac.

For those contemplating the same upgrade, you may be mulling decisions on processor, RAM, storage, and graphics cards; here’s the logic behind each of my choices in those areas, in case it helps you with your decision.

CPU

This was the simplest decision to make—I always buy the most powerful CPU I can afford. In the case where the choice is a Core i5 vs. Core i7, I will always go for the Core i7. That’s because only the Core i7 supports hyper threading, which, as Apple writes, is “a technology that allows two threads to run simultaneously on each core. So a quad-core iMac has eight virtual cores, all of which are recognized by OS X. This enables the processor to deliver faster performance by spreading tasks more evenly across a greater number of cores.”

In addition, by upgrading the CPU, I make the machine more usable many years down the road—whether for my own use, or when reselling to someone else.

(more…)

The Robservatory © 2017 Built from the Frontier theme