Featured images, Attached images and Embedded images. https://sridharkatakam.com/featured-images-attached-images-and-embedded-images/

gistfile1.php

if ( $image = genesis_get_image( 'format=url&size=posts-page-thumbnail' ) ) {
	printf( '<div class="posts-page-thumbnail"><a href="%s" rel="bookmark"><img src="%s" alt="%s" /></a></div>', get_permalink(), $image, the_title_attribute( 'echo=0' ) );
}

gistfile2.php

get_the_image( array( 'size' => 'posts-page-thumbnail', 'scan' => true ) );

gistfile3.php

// Register a custom image size for images on the Posts page
add_image_size( 'posts-page-thumbnail', 600, 400, true );

gistfile4.html

<img src="http://genesis-blank.dev/wp-content/uploads/2013/06/wordpress.png" alt="Heres a sample caption, with a sample image aligned left." width="142" height="142" />