Hi @kiouv
The above shows that your image field has a ‘return format’ setting of ‘Image Array’.
As expected, the value returned is an array. Please refer to the docs to understand how to use the array data:
$image = get_field('push_1_image');
echo $image['url'];
http://www.advancedcustomfields.com/resources/field-types/image/
Thanks
E