What can you say to battery grip size. He does what he should, namely to double the battery life of my A77. But in addition it facilitates photographing enormous, not only in portrait mode. Thanks to the battery handle the A77 with a Tamron SP AF 70-200mm Di LD 2.8 (IF) Macro got a perfect weight distribution, digital lens for Sony. And comfort when shooting in portrait orientation I do not want to miss. No cramped holding the camera more, no long search for the buttons for the settings. The processing of the vertical grip is 1A.