Image Size and Resolution

The coordinate system iOS uses to place content onscreen is based on measurements in points, which map to pixels in the display. A standard-resolution display has a 1:1 pixel density (or @1x), where one pixel is equal to one point. High-resolution displays have a higher pixel density, offering a scale factor of 2.0 or 3.0 (referred to as @2x and @3x). As a result, high-resolution displays demand images with more pixels.

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• All in all, it takes around 25 seconds to scan one photo—15 for aiming the camera and 10 for PhotoScan to processing. Versus many other apps, PhotoScan’s results maintain much better quality/sharpness despite the tendency to come out slightly more exposed. You can view each scanned photo, adjust corners, rotate, and delete as necessary.
• As a modifying app, Photos includes whatever you need to change the light, quality, sharpness, shade, as well as other qualities of the photos you take. It may lack the editing power of professional software applications like Photoshop, yet it’s an excellent tool for aspiring as well as amateur photographers.

For example, suppose you have a standard resolution (@1x) image that's 100px × 100px. The @2x version of this image would be 200px × 200px, and the @3x version would be 300px × 300px.

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Supply high-resolution images for all artwork in your app, for all devices your app supports. Depending on the device, you accomplish this by multiplying the number of pixels in each image by a specific scale factor.

Designing High-Resolution Artwork

Use an 8px-by-8px grid. Uninstall fusion app from hard drive mac davinci. A grid keeps lines sharp and ensures that content is as crisp as possible at all sizes, requiring less retouching and sharpening. Snap the image boundaries to the grid to minimize half pixels and blurry details that can occur when scaling down.

Produce artwork in the appropriate format. In general, use de-interlaced PNG files for bitmap/raster artwork. Encode app for mac. PNG supports transparency and, because it's lossless, compression artifacts don't blur important details or alter colors. It's a good choice for intricate artwork that requires effects like shading, textures, and highlights. Use JPEG for photos. Its compression algorithm usually produces smaller sizes than lossless formats and artifacts are harder to discern in photos. Photo-realistic app icons, however, look best as PNGs. Use PDF for glyphs and other flat, vector artwork that requires high-resolution scaling.

Use the 8-bit color palette for PNG graphics that don’t require full 24-bit color. Using an 8-bit color palette reduces file size without reducing image quality. This palette is not appropriate for photos.

High Quality Photo Taking Mac Apps

Optimize JPEG files to find a balance between size and quality. Most JPEG files can be compressed without noticeable degradation of the resulting image. Even a small amount of compression can save significant disk space. Experiment with compression settings on each image to find the optimal value that yields an acceptable result.

High Quality Photo Taking Mac Apple

Provide alternative text labels for images and icons. Alternative text labels aren’t visible onscreen, but they let VoiceOver audibly describe what's onscreen, making navigation easier for people with visual impairments.