Antialiasing of images in Photos on iPhone 11
I recently purchased an iPhone 11 to replace an iPhone 6s Plus. I was aware that the screen pixel density of the 11 and XR was marginally lower than my old 6s but after comparing displays in the Apple store I was happy enough to buy the 11.
On taking pictures with fine background detail, however, there is a noticeable difference in sharpness in viewing the picture on my old phone vs the new one – fair enough, I thought, that’s the lower resolution screen. On viewing the same images in Google Photos, however, I noticed that a much sharper image is displayed as each subsequent photo moves into place on swiping from one photo to another. When the photo comes to a stop, however, the final image is softened to match the image that is displayed on the 11’s screen in the native photos app. This does not happen on the 6s. I assume the XR behaves the same way but have not had one in my hands to test. It is worth noting that the unsoftened image will often have noticeable ‘jaggies’ so I can see why some softening may be used. I am wondering, could the method of image display in the native Photos app incorporate some sort of antialiasing? If so I really feel that Apple could likely tweak the algorithm slightly to produce image display closer to the original image and feel it is worth raising the issue to see if others have noticed and if Apple might see and look into it. I have already sent them feedback.
TLDR: I think the iPhone 11 (and probably the XR) are applying an antialiasing filter to images in the Photos app which is over aggressive and is not doing their display justice! This is apparent after scrolling through photos in Google Photos which exposes the softening filter. I wonder has anyone else noticed this?