Is there a way to get back to the Render Slot Dropdown Menu (That already has renders in it) "without" having to make another render? This would be during a single session of Blender.
It seems to me that the question might not really be about render slots but rather about where to find your renders if you can't see them. If so:
There are two ways to get back to your render. Using the keyboard shortcut F11 Will bring up the render window without re-rendering (F12 does the same but also re-renders). You can then follow steps 4 to 6 below if you render isn't visible. Or, referring to the picture below:
- Using the button in the bottom left of an area to open:
- The Editor menu you can select:
- 'UV/Image Editor' where you should see:
- Your previous render. If not:
- Select 'Render Result' from the Image menu and also, possibly:
- The Slot you rendered into.
If you rendered to the same slot, the previous information is gone forever.
If you switched to a different slot, then the information of other slots is untouched and you can switch back and forth.
To access the rendered slots you need to be in Render Result as the source for the UV/Image window:
To save the information of any of the rendered slots, use the Save as Image option on the UV/Image editor and use OpenEXR as the format, that will keep the rendered image as scene referred data.
An alternative, is to add a File Output node in the compositor. That way every time you render you will be saving a file automatically. Note that if you render again, it will render to the same file and overwrite the previous image.