I want to use the 1:1 zoom in Image Viewer (eog). But i can't find the icon (or the option), which used to be there in the 14.04 release. Where is it?
Compare it with this image:
This has the "1" icon which lets me view the image at 100% zoom.
Also, other Ubuntu "stock" applications like Text Editor (gedit), Videos, etc do not have the toolbar buttons. Is this the new look going forward?
Ubuntu 16.04 is based on gnome 3.18. Applications such as eog or gedit (are part of gnome desktop environment) are updated versions and this is modified interface. In eog you can click + and set 1:1 zoom (just move to mark).
If you don't like the way it looks you can downgrade applications to previous versions like this example.
Click the ↗ button to view the picture in full-screen mode. In that mode, there is an auto-hiding top toolbar with all the old toolbar icons.
If you use the Actual size mode often, you may find it useful to use the keyboard shortcut. Just press the 1 key on your keyboard and press F to return to Best fit mode.
