I want to use my featured image 2 times in specific sizes.
I need the featured image to be around 410x230 in my blog feed,
which I have working right now via css.
In the single post page, I need it to be a larger size, around 850x500.
I tried to upload the larger thumbnail size with the featured image tab, and use css for both instances. but when I upload the 850x500 image, it crops it extra thin.