I have a concern about uploading images.
Let's say I have a "medium" size setting of 300 x 300.
Then, let's say I upload an image that's 540 x 465.
Next, I add the "medium" size image to a post.
The problem: WP Retina 2x selects the 300 x 258 image even on Retina devices, and it kinda looks like hell. :)
Is it best for me to manually copy the full size image to the 300x258@2x location?
Could you come up with something that is a little bit easier, even if I have to find a button somewhere to make a copy?
This becomes necessary in some situations where the original image is the best quality and less than 600 px wide.