Ouput yes/no in commerce product table if product image available/not available
Simply add your image field. When you add it, or if you click on it if you already added it, you will see something similar to the following date field screenshot.




Click on rewrite results and put "Yes" here.
Click on no results behavior and put "No" here.





  Is there a way to solve this in a similar way if you have a default
  image set - if none is uploaded a default image shows up?


In this scenario you would have to use Image URL Formatter and set the view image field formatter to display url. 

Then you would simply perform a conditional check to see if the URL is equal to the default image url either using Views template file &amp; custom code OR alternatively using Views Conditional for a zero coding solution.