For Apple, it's all about pixel density. Your screen is made up of tiny pixels which display different colours that make up the image you see. Retina display technology literally doubles the pixels per inch (ppi) of non-Retina screens. An iPhone with Retina supports by resolution with ppi. Retina - A display with a pixel density such that the naked eye cannot discern individual pixels on an iPad screen from a distance of 15 inches. TURD When means generated uppercase is as a. There try available few models of fortigates these. A includes a ago.
The scale factor is tripled for devices with even higher pixel densities, such as the iPhone 6 Plus and iPhone X. The goal of Retina displays is to make the text and images being displayed extremely crisp, so that pixels are not visible to the naked eye or at viewing distance.
Apple's Retina displays are not an absolute standard for display sharpness, but vary depending on the size of the display on the device, and at what distance the user would typically be viewing the screen. Where on smaller devices with smaller displays users would view the screen at a closer distance to their eyes, the displays have more PPI Pixels Per Inch , while on larger devices with larger displays where the user views the screen further away, the screen uses a lower PPI value.
Later device versions have had additional improvements, whether an increase in the screen size the iPhone 12 Pro Max , contrast ratio the When introducing the iPhone 4 , Steve Jobs said the number of pixels needed for a Retina display is about PPI for a device held 10 to 12 inches from the eye.
Any display's viewing quality from phone displays to huge projectors can be described with this size-independent universal parameter. Note that the PPD parameter is not an intrinsic parameter of the display itself, unlike absolute pixel resolution e. It can be calculated by the formula.
That aperture, which can be measured by visual field tests , varies widely among different human subjects. In practice, thus far Apple has converted a device's display to Retina by doubling or tripling the number of pixels in each direction, quadrupling the total resolution.
This increase creates a sharper interface at the same physical dimensions. The sole exception to this has been the iPhone 6 Plus, which renders its display at triple the number of pixels in each direction, before down-sampling to a p resolution. The displays are manufactured worldwide by different suppliers. Reviews of Apple devices with Retina displays have generally been positive on technical grounds, with comments describing it as a considerable improvement on earlier screens and praising Apple for driving third-party application support for high-resolution displays more effectively than on Windows.
Reviewing the iPhone 4 in , Joshua Topolsky commented:. Not only are the colors and blacks deep and rich, but you simply cannot see pixels on the screen…webpages that would be line after line of pixelated content when zoomed out on a 3GS are completely readable on the iPhone 4, though the text is beyond microscopic. That much resolution is stunning. It will set a bar for future resolution that every other manufacturer of devices and PCs will have to jump.
Writer John Gruber suggested that the arrival of Retina displays on computers would trigger a need to redesign interfaces and designs for the new displays:. The sort of rich, data-dense information design espoused by Edward Tufte can now not only be made on the computer screen but also enjoyed on one. Regarding font choices, you not only need not choose a font optimized for rendering on screen, but should not. Fonts optimized for screen rendering look cheap on the retina MacBook Pro—sometimes downright cheesy—in the same way they do when printed in a glossy magazine.
He says that the physiology of the human retina is such that there must be at least pixels per inch in a pixelated display for the pixels to become imperceptible to the human eye at a distance of 12 inches mm. The picture will look pixelated. So in my opinion, what Jobs said was fine.
Soneira, while technically correct, was being picky. However, near visual acuity is usually poor due to presbyopia  in nearly everyone over 40, such that decreasing reading distance can actually reduce perceivable resolution. This was an isolated case for the platform however, as all other Symbian-based devices had larger displays with lower resolutions. Some older Symbian smartphones, including the Nokia N80 and N90 , featured a 2. The first Android smartphones with the same display - Meizu M9 was launched a few months later in beginning of In October of the same year Galaxy Nexus was announced, which had a display with a better resolution.
Aside from resolution, all generations of iPhone Retina displays receive high ratings for other aspects such as brightness and color accuracy, compared to those of contemporary smartphones, while some Android devices such as the LG G3 have sacrificed screen quality and battery life for high resolution. Ars Technica suggested the "superfluousness of so many flagship phone features—the move from p to p to p and beyond From Wikipedia, the free encyclopedia.
This article is about the HD screens of Apple products. For the heads-up-display technology, see Virtual retinal display. Brand name for high resolution displays featured in many products from Apple Inc. Part of a Retina display on an iPhone 4. The pixels are not visible at normal viewing distance, creating an impression of sharp print-like text. Part of a non-Retina display on an iPhone 3GS.
The pixels are visible at normal viewing distance. June 7, Retrieved June 4, Trademark Applications and Registrations Retrieval. Retrieved June 19, Some apps that work best in low-resolution mode or that work only in low-resolution mode will have this mode already turned on, and in that case you might not be able to turn it off.
The app developer might offer an update that includes support for the Retina display. Information about products not manufactured by Apple, or independent websites not controlled or tested by Apple, is provided without recommendation or endorsement.
Apple assumes no responsibility with regard to the selection, performance, or use of third-party websites or products. Apple makes no representations regarding third-party website accuracy or reliability. Contact the vendor for additional information. Native resolution: x Models introduced in and support millions of colors, and models introduced in or later support one billion colors.
The Retina model introduced in supports millions of colors, and models introduced in or later support one billion colors. All iMac Pro models. Change the resolution of your display Your Mac automatically chooses a default resolution that is optimal for your display. Click Displays. If you have multiple displays connected, click Display Settings, then select your display. Select Scaled, then select any of the four or five scaled resolutions, depending on your Mac model.
With scaled resolutions, text and objects can appear larger and more visible, or smaller to provide more space for windows and apps. If you're also using an external display If you're using an external display to extend your desktop, you can choose a preferred resolution for each display. Using apps with a Retina display If an app looks different than you expect on your Retina display or high-resolution external display, try opening the app in low-resolution mode: Quit the app.
Open the Applications folder. Click the app once to select it, then choose Get Info from the File menu. When your Mac is using the Apple-supplied Windows Support Software, Windows starts up with the maximum dpi pixels it supports, which is dpi, or percent magnification.
As a result, items on the display appear small, with a lot of space.
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Viewed 2k times. This image shows the difference: as you can see it looks fine on the 3GS. Improve this question. KDaker KDaker 5, 4 4 gold badges 30 30 silver badges 44 44 bronze badges. Do you two different images for the stretchableImage? And if so, is the 2x one exactly 2x larger than the other one? I also tried removing the ' 2x' images and using the regular ones just to see what happens. It didn't fix it. How did you create all of the different images?
Did you use Photoshop or any other Adobe program? Did you disable color management? Out of curiosity, why do you have to overlay the button over a UIImageView? Why can't you just retire the imageview and use the image property of the custom button? Regardless, can you share the image s with us and if you're manually setting any colors for your backgrounds, what colors are you using , as that's a lot easier to diagnose than the problem in the abstract. If there's something proprietary about the image, just redact that part if you need to.
The exported png's match if you place them next to each other so thats not the problem. Also, if you look at the 3gs image above, it works perfectly as you cannot tell where the image cuts off. Show 2 more comments. Sorted by: Reset to default. Highest score default Date modified newest first Date created oldest first. Improve this answer. Rather than retina vs. Happens with web browsers a lot! Add a comment. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.
So how does the new entry-level iPad compare to the old entry-level iPad in terms of specs? Check the table below for a side-by-side comparison:. If you're wondering why Apple has decided to get rid of the iPad 2 after letting it live through so many updates, you're not alone. One of the prime suspects is the pin connector, which isn't present on the iPad with Retina Display or any of the current generation Apple products or accessories. Introduced two years ago, the Lightning connector has to completely replace the pin dock connector at some point, and it looks like the discontinuation of the iPad 2 might be a sign that Apple is moving things in that direction.
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