The Comercialfoto , which distributes the photographic Sony machines, made a benchmark of the best memory cards for use with the Sony Alpha 7 Mark III, which has two inputs for SD cards.

The Sony Alpha 7 Mark III, like the Sony A7r III and Sony A9 , has a new and improved buffer that allows memory cards to perform at their best performance. However, Alik Griffin , a professional photographer and editor, has tested the machine's ability with various models of SD cards.