Thanks Nick. Yeah it was stood still for quite a while. The 9 images were taken from a larger selection, but I got it down to 9 without including any duplicate areas of focus. So I guess it was standing still for a minute or so (quite a long time by most standards) but as you suggest, it was moving slightly. It was flexing a bit (I guess to keep air circulating - kind of like breathing) and waving it's antenna around. Although I did manage to get it in focus throughout, it had moved it's antenna by the time I got to the end. There are ways to get around this, but it can get quite complicated and time consuming, so in this case I decided to just exclude those few frames in the final stack, which is why the antenna ends are OOF.
The EOS-M with small 90EX flash doesn't recycle as quickly as my old setup, so it takes a second or two between frames. So probably this stack was probably over about 20 seconds, but as stated, I was shooting for a bit longer than that overall.
I should also say the OOF area at the front, was because part of the stone i found this under came up at that point (rather than being an abrupt end to the stack). As often happens when you shoot from low angles, getting any lower would have obscured the subject, so this was really at the limit.
Young Woodlouse by Tim.Garlick, on Flickr
