JessM Loc: Port

In their book, Macrophotography: Learning From a Master, Gilles Martin and his writer, Ronan Laoec, mention on p 266 a home-made device "...inspired by frames used in underwater photography..."
Very briefly, the device consists of a highly visible frame supported on the corners by metal rods that connect to a camera holder on the other end (the camera itself looks to be enclosed by a wooden frame). Apparently, the visible frame would enclose an aiming area surrounding the focus point. The operator then aims that frame at a flying insect and fires the camera when the bug flys into the aiming point.
Of course, the photo on p 266 gives a far better notion of the method. I'm interested to learn of any experiences with a similar device, or opinions about it. It's 0530 local time here in Central FL, and I'm still asleep -- please don't hesitate to let me know if clarifications are needed.
73.... ~jessM
PS: Martin's book is translated from the French text.

Mark Sturtevant Loc: Grand Blanc, MI

I think I understand. It seems a good idea to use an 'aiming point' to inform you of when the subject is in ~ focus.

JessM Loc: Port

Agreed. Perhaps another plus would be not needing to look through the viewfinder. My main problem with flying bugs, or even one at rest within a busy field of view, is locating it through the viewfinder in time to focus and fire. Never had that problem in portrait or landscape work... Of course one would need pretty good depth perception to work that gadget. … :-)

Thanks for the response... 73... ~jessM