Unfortunately, despite the Captain's best efforts, FEers refused to accept his evidence due to the fact that he used a telephoto lens rather than an old-fashioned telescope. Tom (somehow) manage to shout him down by saying that a telephoto lens doesn't work the same way/isn't as powerful as a telescope.
If you're going to do this experiment, I'd recommend making sure you pack along a telescope and an adapter of some kind so your camera can take pictures through it. I'm pretty sure such adapters exist (I thought I saw a thread regarding that topic a while back), but I'm unsure of where one might purchase them.
EDIT: I found the forum you were talking about, the one bthimes started where he took pictures of the sinking ship. Here's a link.
http://theflatearthsociety.org/forum/index.php?topic=18526.0