Q:

Is The Venice Syndrome documentary cover photo real? 

Came across below photo and eventually tracked it down to a cover photo of "The Venice Syndrome" documentary IMDb and the trailer at Vimeo :

This image is not in the trailer (haven't seen the documentary).  Big cruise ships do (did) visit Venice as we can see from the trailer, I am not doubting this fact. 
Question: Is this image real, did this exact cruise ship came to Venice the way it is pictured in the image? 
Update: Got this image from private chat group claiming it is real.  Although no one is claiming it is real in public, it seems relevant to find out if it is photoshopped, i.e.: added a big cruise ship just behind the church, for the purpose of exaggerating the effect of the documentary.  I understand every cover photo is retouched, as noted in the comments the sky looks like painted. 

A:

No.  This particular photo is not real.  This particular ship did visit Venice and the photo was taken during that time.  Here is a comparison:
 
The second photo in this montage shows the source for the cover.  You can even see a "pixel" marking on the front from where the lamppost was removed.  
Second proof is this cover for the same movie.  As you can see the ship is much bigger with same shadow and lights.  
Third, the sunlight on the ship is very crisp, shining from the left.  The photo of Venice was taken during cloudier day with the sun being behind and on the left of photographer. 