I’m not sure how to even ask this question but here goes:
First of all I am loving the theme so thank you for that.
As to the question:
for both the portfolio and the blogs I use landscape- and portrait oriented images. I figured out how to get the landscape pictures to look good by checking the functions.php. But the portrait oriented images always appear at the same width as the landscape oriented ones but, you understand, they become far too tall and therefore pixelated.
The only way that you’ll be able to control the width of the portrait specific images is to put them on a blank canvas in an image editor so that the actual file is the size of a landscape photo. Unfortunately there just isn’t anything available to change the way the theme automatically outputs the images to handle landscape differently than portrait.