diff --git a/examples/dither.c b/examples/dither.c
index 463cf70..246df80 100644
--- a/examples/dither.c
+++ b/examples/dither.c
@@ -27,7 +27,6 @@ int main(int argc, char *argv[])
     dstname = argv[3];
 
     img = pipi_load(srcname);
-    pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
 
     switch(atoi(argv[2]))
     {
@@ -42,7 +41,6 @@ int main(int argc, char *argv[])
 
     pipi_free(img);
 
-    pipi_getpixels(newimg, PIPI_PIXELS_RGBA_F);
     pipi_save(newimg, dstname);
     pipi_free(newimg);
 
diff --git a/examples/edd.c b/examples/edd.c
index 2c9c12c..baa576a 100644
--- a/examples/edd.c
+++ b/examples/edd.c
@@ -50,7 +50,6 @@ int main(int argc, char *argv[])
 
     /* Load image, convert it to grayscale, dither it with Floyd-Steinberg */
     img = pipi_load(argv[1]);
-    pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
     pipi_getpixels(img, PIPI_PIXELS_Y_F);
     gauss = pipi_gaussian_blur(img, sigma);
     dither = pipi_floydsteinberg(img);
diff --git a/pipi/pixels.c b/pipi/pixels.c
index 45bb3a4..702ead8 100644
--- a/pipi/pixels.c
+++ b/pipi/pixels.c
@@ -48,6 +48,20 @@ pipi_pixels_t *pipi_getpixels(pipi_image_t *img, pipi_format_t type)
     if(img->last_modified == type)
         return &img->p[type];
 
+    /* Preliminary conversions */
+    if(img->last_modified == PIPI_PIXELS_RGBA32
+                  && type == PIPI_PIXELS_Y_F)
+        pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
+    else if(img->last_modified == PIPI_PIXELS_BGR24
+                       && type == PIPI_PIXELS_Y_F)
+        pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
+    else if(img->last_modified == PIPI_PIXELS_Y_F
+                       && type == PIPI_PIXELS_RGBA32)
+        pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
+    else if(img->last_modified == PIPI_PIXELS_Y_F
+                       && type == PIPI_PIXELS_BGR24)
+        pipi_getpixels(img, PIPI_PIXELS_RGBA_F);
+
     /* Allocate pixels if necessary */
     if(!img->p[type].pixels)
     {