Positioning and opacity

Question

I'm trying to include an image to my beamer using Tikz. The problem is that I don't find the code to position the image horizontally and vertically as well as being able to change its opacity.

\usepackage{tikz}
\usetikzlibrary{calc}
\begin{frame}{Outline}
\begin{picture}(0,0)
\put(200,-200){\includegraphics[opacity=0,5][height=12cm]{Images/image.png}}
\end{picture}
\end{frame}

Answer 1

Welcome to TeX-SE! Thanks for adding some code. Given that you load tikz and the calc library, I'd like to suggest

\documentclass{beamer}
\usepackage{tikz}
\usetikzlibrary{calc}
\begin{document}
\begin{frame}
\frametitle{Outline}
\begin{tikzpicture}[overlay,remember picture]
\node[opacity=0.5] at ($(current page.center)+(1,1)$)
{\includegraphics[height=2cm]{example-image-duck}};
\end{tikzpicture}
\end{frame}
\end{document}

With overlay,remember picture you can access and use absolute page coordinates, and with calc you can add coordinates, as illustrated.