Hey,
The problem is that on the site that you showed me the structure of the content is different. The thumb is on the left and the text on the right. My theme has the thumb first and the content just under it. If you change the size of the thumb it will look awkward.
You can change the default cropping size from the “functions.php” file at line 126:
add_image_size( 'blog-thumbs', 770, 293, true ); // blog thumbs
You can add an additional size for the single post like this example:
add_image_size( 'blog-thumbs-single', 770, 293, true ); // blog thumbs single
Then in the theme’s folder > framework > inc > post-formats you can edit the file named “single.php” and look for this:
<?php the_post_thumbnail('blog-thumbs'); ?>
and change it to the newly created size (this is for single post):
<?php the_post_thumbnail('blog-thumbs-single'); ?>
Cheers!