Describing a photograph
This photograph focuses on...while the other shows...
What is not illustrated/covered by any of this photos is/are...
Shall we discuss each photo in turn?
My feeling is that this picture focuses more on...than...
It seems to me that this image conjures up...
What do you think about this one?/What's your view?
Perhaps photograph...may not be appropiate becasue...
The picture which I think people will find most shocking/disgusting is...
I don't think this picture is particularly relevant because...
I think what the maker of these images is trying to say is...
One important image that is missing here is...
All these expressions are really useful for the speaking exam of any english certificate of Cambridge (First Certicate, Cae Certificate,...).
The reason why they are useful is because you are likely to describe a photograph in the speaking exam.