Here are sample images using the Sony 100-400mm GM lens (with the Sony A1 camera). This is an incredible lens, being super sharp and relatively lightweight. Potentially alternative lenses that I recommend are the Sony 70-200mm F2.8 GM II and Sony 200-600mm F5.6-6.3 lenses. For images, view the Sony 70-200mm F2.8 GM II Sample Images Gallery and the Sony 200-600mm F5.6-6.3 Sample Images Gallery. To get in touch, please contact me.