On Wed, Feb 20, 2013 at 8:53 AM, Isarra Yos <zhorishna@gmail.com> wrote:
Images are all manner of aspect ratios and thus they will not line up like you make out in the mockups unless you arbitrarily crop them or do something funky with them, and making them smaller limits the funky things that can reasonably be done.

On iOS I'm cropping them to squares for the grid view. This is pretty common, and you'll see it done in the system 'Photos' or 'Gallery' apps on iOS and Android as well as sites like Flickr in big list views.

Generally you see the image in its full aspect ratio on a detail view.

-- brion