diff --git a/ptbposter/ptbposter-test-hoch.pdf b/ptbposter/ptbposter-test-hoch.pdf
index a8c7234434093c7b32fa5aae8da2ef513ed0bd5e..7c4b21a5e6c45d121a89c65730ae299662ef11fc 100644
Binary files a/ptbposter/ptbposter-test-hoch.pdf and b/ptbposter/ptbposter-test-hoch.pdf differ
diff --git a/ptbposter/ptbposter-test-quer.pdf b/ptbposter/ptbposter-test-quer.pdf
index f364100f3962b2e16df4952002e45042f12933df..dcc6836fb59bbd133adb6c96ec076b7acf865368 100644
Binary files a/ptbposter/ptbposter-test-quer.pdf and b/ptbposter/ptbposter-test-quer.pdf differ
diff --git a/ptbposter/ptbposter.cls b/ptbposter/ptbposter.cls
index 53e39bf472de03f5309f08c9967582e25e67e939..287d2912aa89fb937b49c4f1f2f2f4d003ddebf9 100644
--- a/ptbposter/ptbposter.cls
+++ b/ptbposter/ptbposter.cls
@@ -6,17 +6,19 @@
 \ProvidesClass{ptbposter}
     [2015/03/20 v0.2f PTB-Poster-Klasse (RN)]
 
-\newdimen\PTB@topmargin  % Abstand zum Rahmen
-\newdimen\PTB@leftmargin % Abstand zum Rahmen
-\newdimen\PTB@default@fsize
-\newdimen\PTB@texthsep   % Abstand Textbereich zum Rand
-\newdimen\PTB@textvsep   % Abstand Textbereich zum Rand
+\newdimen\PTB@topmargin      % Abstand zum Rahmen
+\newdimen\PTB@leftmargin     % Abstand zum Rahmen
+\newdimen\PTB@default@fsize  % Standardschriftgröße im Textbereich (\normalsize)
+\newdimen\PTB@default@tfsize % Standardschriftgröße für den Titel
+\newdimen\PTB@default@afsize % Standardschriftgröße für die Autoren
+\newdimen\PTB@texthsep       % Abstand Textbereich zum Rand
+\newdimen\PTB@textvsep       % Abstand Textbereich zum Rand
 
 \setlength\PTB@default@fsize{41pt}
+\setlength\PTB@default@afsize{106.6pt}
+\setlength\PTB@default@tfsize{106.6pt}
 \setlength\PTB@topmargin{215mm}
 
-\newif\ifPTB@is@landscape \PTB@is@landscapefalse
-
 \newcommand\PTB@tempa{}
 \newcommand\PTB@tempb{}
 \newcommand\PTB@tempc{}
@@ -24,7 +26,9 @@
 \newcommand\PTB@tempe{}
 
 \let\PTB@tempdima=\@ovxx
-\let\PTB@tempdimb=\@ovyy
+\let\PTB@tempdimb=\@ovyy{}
+
+\newif\ifPTB@is@landscape \PTB@is@landscapefalse
 
 \DeclareOption{portrait}{\PTB@is@landscapefalse}
 \DeclareOption{landscape}{\PTB@is@landscapetrue}
@@ -273,18 +277,6 @@
   \endgroup
 }%
 
-\iffalse
-\edef\large{\noexpand\@setfontsize\noexpand\large
-  {\the\dimexpr1.3\PTB@default@fsize}{\the\dimexpr1.56\PTB@default@fsize}}
-%% vorher: 1.2 * \PTB@default@fsize / 1.2 * 1.2 * \PTB@default@fsize
-\edef\Huge{\noexpand\@setfontsize\noexpand\Huge
-  {\the\dimexpr2.6\PTB@default@fsize}{\the\dimexpr3.12\PTB@default@fsize}}
-%% vorher: 2.49 * \PTB@default@fsize / 2.49 * 1.2 * \PTB@default@fsize
-\edef\tiny{\noexpand\@setfontsize\noexpand\tiny
-  {\the\dimexpr0.47\PTB@default@fsize}{\the\dimexpr0.564\PTB@default@fsize}}
-%% vorher: 0.5 * \PTB@default@fsize / 0.5 * 1.2 * \PTB@default@fsize
-\fi
-
 \newcommand*\authorFontSize{}
 \newcommand*\footFontSize{}
 \newcommand*\titleFontSize{}
@@ -292,11 +284,11 @@
 \def\footFontSize{\@setfontsize\footFontSize{19.2}{23.04}}
 
 \newcommand*\scaleTitleFontSize[1]{%
-  \PTB@tempdima=106.6pt %
+  \PTB@tempdima=\PTB@default@tfsize
   \PTB@tempdima=#1\PTB@tempdima
   \PTB@tempdimb=1.2\PTB@tempdima
-  \xdef\titleFontSize{\noexpand\@setfontsize\noexpand
-    \titleFontSize{\the\PTB@tempdima}{\the\PTB@tempdimb}}%
+  \xdef\titleFontSize{\noexpand\@setfontsize
+    \noexpand\titleFontSize{\the\PTB@tempdima}{\the\PTB@tempdimb}}%
 }
 
 \scaleTitleFontSize{1}
@@ -323,9 +315,9 @@
   \setlength\PTB@texthsep{.5em}%
   \setlength\PTB@textvsep{.75em}%
   \ifPTB@is@landscape
-    \setlength\PTB@leftmargin{0.5\dimexpr 1189mm-1130mm}%
+    \setlength\PTB@leftmargin{0.5\dimexpr\paperwidth-1130mm}%
   \else
-    \setlength\PTB@leftmargin{0.5\dimexpr 841mm-780mm}%
+    \setlength\PTB@leftmargin{0.5\dimexpr\paperwidth-780mm}%
   \fi
   \edef\PTB@tempa{\noexpand\newgeometry{%
     top=\the\dimexpr\PTB@topmargin+\PTB@textvsep,%