Quite a mix of A/C, RAF C-47 up front with ASAAF, P-38s, P-51s, B-24s. I see at least one A/C with invasion stripes so that puts it post June 6, 1944. Odd mix of A/C IMHO.

It looks like the auto focusing issue is the only one I can find. Just shoot on nice sunny days! Here is what Canon says about it

Teleconverters are not recommended for lenses wider than 50mm, e.g. 28-105mm. However, full AF operation is only possible with lenses with open aperture of f/2.8 or brighter. Please be aware that AF will work properly only if there is enough light and contrast on the subject to activate the camera’s AF sensors. Manual focusing is recommended when using lenses with smaller open f-stop value than those given above.

The Harold Kindsvater Buchon was a “Red 5” in the BoB film from what I have found, so this is a different bird. Still looking.

I know there is a small museum here in Florida somewhere that had a K-Ship display and memorial, though I doubt they can afford the space and cost of shipping. The natural fit, imho, would be the Naval Aviation Museum in Pensacola. Large facility, deeper pockets, and the expertise to do it up right. I have no contacts there, but there web is

http://www.navalaviationmuseum.org/

The K-ships were stationed here in Florida during the war and the only one shot down by U-Boat was stationed here. So there is a deep history of them locally.

THe Smithsonian NASM would also be a good fit, but with the size of their collection, projects in waiting, it probably would not resurface for 20 years!

What is the f-stop range on the lens? I know I have seen warnings that the doubler is NOT recomended if the F is too high on the lens, at least with the digital SLR.

So…do you think it will be at……

An interesting wreck that might draw a good bit of interest would be that of the Glen Miller (of big band fame) wreck. In 1944, while flying from England to France…dissapeared. THe single engine C-64 Norseman was found by diver Clive Ward in 1985 in an RAF Bomb jetteson area over the chennel. An account from Lancaster crewmen stated they had seen a low flying Norsman “spin in” from their bomb concussion.

Lots on info on the web, very mysterious