Currently Steemit does not support embedding images in posts.
For those of us who wish to post authentic and original photographs directly without posting them elsewhere and then linking to them on Steemit, this is just not good enough. I would like to be able to click photos on my phone and upload them directly to Steemit (and I am not sophisticated enough to use the blockchain-tethered solutions proposed on the site, helpful as they are to the coding-literate!).
Removing the ability to https link photos and forcing embedding would lead to Steemit the only place that these images can be viewed online, reduce plagiaristic content and bring Steemit wider adoption.