I was trying to combine 2 images into a single float using the subfig package, but couldn't see them in the "List of Figures", despite adding individual captions. It turned out to be a simple fix. All you need to do is add the following line just before the
\listoffigures
command.\setcounter{lofdepth}{2}
As you might have guessed looking at the command, it sets the depth for list-of-figures to 2, which meant that the captions of the sub-figures were displayed.
If you've combined 2 tables into a single float, you need to add the following line just before the
\listoftables
command.\setcounter{lotdepth}{2}
You can find the full documentation for subfig as a PDF, here.
And, finally, I publish a post on this blog after ages!