> The reason for this is both to have an explicit token for the regular scale > factor and also so that this matches with the default image suffix of "@2x" > so that we can add more ways to provide alternate media such as "@120dpi" > which are consistent with the values we use here. > > BTW, we need to discuss ways to automate loading alternate media beyond @2x > at some point…
I’m not sure it’s practical, but has anybody every thought about using existing EXIF tags to determine image resolution? AFAIK, both JPEG and TIFF support EXIF tags (http://www.w3.org/2003/12/exif/) and thus embedding of resolution metadata (Labels: resolution, xResolution, yResolution, resolutionUnit). There could be another special tag @exif (or @native, to avoid being tied down to one particular way of embedding info), which basically means: check the embedded resolution info. -hendrik
