答案1
您可以使用\captionsetup[sub]{...}
来更改子标题的属性:
\documentclass{article}
\usepackage{subcaption}
% Configure main captions
\captionsetup {labelfont={rm,md,bf},textfont={rm,md,sl}}
% Configure subcaptions
\captionsetup[sub]{labelfont={rm,md },textfont={rm,md,sl}}
\begin{document}
\begin{figure}
\centering
\begin{subfigure}{2cm}
\caption{bla 1}
\end{subfigure}
\begin{subfigure}{2cm}
\caption{bla 2}
\end{subfigure}
\caption{bla}
\end{figure}
\end{document}