# Change beamer margin for images

I want to insert image that covers entire beamer tile, no margin or extra white space is desired.

Current MWE

 \documentclass[12pt]{beamer}
\usetheme{CambridgeUS}
\usepackage[utf8]{inputenc}
\usepackage{amsmath}
\usepackage{graphicx}
\begin{document}
\begin{frame}{Title}
\begin{flushleft}
\includegraphics[scale=1]{CtrlSM1.pdf}
\end{flushleft}
\end{frame}
\end{document}


This gives me,

But what I desire is,

I have tried,\begin{flushleft} Image \end{flushleft}, \hspace{-5mm} and\vspace{-3mm}

Can you please suggest some modifications.

You don't need flushleft, just put the picture in a box of textwidth width. Make sure the height is also suitable, I don't have your PDF to check.

\documentclass[12pt]{beamer}
\usetheme{CambridgeUS}
\usepackage[utf8]{inputenc}
\usepackage{lmodern}
\begin{document}
\begin{frame}{Title}
\makebox[\textwidth]{\includegraphics[width=\paperwidth]{example-image}}
\end{frame}
\end{document}