Microsoftthanks Beth Hall and KevinCrossman .
kudos Beth Hall on putting together that page documenting your test results and your thinking on this.
I have a technical background , though not in design , so this was useful for me. As per your advice i'll probably need to run the tests myself to fully appreciate the full picture (pun intended :smileyhappy:)
I think most SharePoint business users could struggle with grasping this OOTB functionality around Image management in SharePoint and could potentially stop them from using SharePoint as a Comms tool... Creating a newsletter in Word and/or Outlook and emailing it may seem a more attractive option. Or perhaps using Yammer or Teams , where the rollup/aggregation experience is functional but not as rich (but doesn't need to be either)
Do competing products for OOTB Comm sites (I'm guessing WordPress could be one of these) have the same issues/gotchas in relation to simple image editing and responsiveness issues?
Does Microsoft envision investment in making the image editing experience within Modern sites more usable and easy to understand?
Wondering do the SharePoint "Intranet in a box" products also suffer from this limitations. i.e. the inability to resize images within the page editor and the issues listed in Beth Hall 's article in relation to how images behave in responsive/adaptive scenarios.
100% Agreed on the pointer to avoid using Text in the images.
Another tip to add to the list on http://straightenthemaze.com/2018/02/21/how-sharepoint-handles-images/ could be to avoid using pictures of people as images that will be displayed in any aggregation/roll-up web parts. What I've seen.. similar to how Text is handled , the aggregation/rollup may display people with their heads cropped out of the photograph which doesn't look good.
Thankfully It's ok to have pictures with people within the contents of the page.
[Update - 15022019] I've had a re-read of Beth's post (see URL above). I've distilled my experience with this to one recommendation. When working with images in SharePoint pages. If the images are photographs taken on a smartphone then the (phone) photographer should be using landscape mode rather than portrait mode.
Images that can be displayed in 16:9 aspect ratio (i.e. think of this as the display on a laptop or monitor) will behave/look well in the SharePoint page experience. Images that were taken in portrait mode do not behave/look well.
There still is a question here in relation to how best to display a screenshot from a mobile app (e.g. the SharePoint App) as an image on a modern SharePoint page. This is where improved ability to resize the images would come in handy (similar to how we can resize the image in e.g. Outlook or Word - by dragging in the corners)
