Displaying Images
When working with photos, keep image size in mind. Snapped pictures, especially those from high-resolution cameras, can be quite large, even in the age of Retina displays. Those captured from front-facing video cameras use lower-quality sensors and are much smaller.
Content modes provide an in-app solution to displaying large images. They allow image views to scale their embedded images to available screen space. Consider using one of the following modes:
The UIViewContentModeScaleAspectFit mode ensures that the entire image is shown with the aspect ratio retained. The image may be padded with empty rectangles on the sides or ...
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