Small Bumble-bee On Lavender by
David Stephens, on Flickr
Using the 100-400mm, with FE 1.4x teleconverter, on a7RIII, with Kenko 25mm extension tubes, allowing focus to 18" at 560mm. This is around a 50% crop, resulting in around 8-times life size, when viewed at 1024p on a 27" monitor.