diff --git a/cmd/camera.h b/cmd/camera.h
index 7715b21..bbdb0fe 100644
--- a/cmd/camera.h
+++ b/cmd/camera.h
@@ -15,6 +15,8 @@ typedef struct camera_options_s {
   bool allow_dma;
   float high_res_factor;
   float low_res_factor;
+
+  char options[4096];
 } camera_options_t;
 
 typedef struct camera_s {
diff --git a/cmd/main.c b/cmd/main.c
index db98d5a..73cab67 100644
--- a/cmd/main.c
+++ b/cmd/main.c
@@ -65,11 +65,15 @@ option_t all_options[] = {
   DEFINE_OPTION_DEFAULT(camera, allow_dma, bool, "1"),
   DEFINE_OPTION(camera, high_res_factor, float),
   DEFINE_OPTION(camera, low_res_factor, float),
+  DEFINE_OPTION_PTR(camera, options, list),
+
   DEFINE_OPTION(http, port, uint),
   DEFINE_OPTION(http, maxcons, uint),
+
   DEFINE_OPTION_DEFAULT(log, debug, bool, "1"),
   DEFINE_OPTION_DEFAULT(log, verbose, bool, "1"),
-  DEFINE_OPTION_PTR(log, filter, string),
+  DEFINE_OPTION_PTR(log, filter, list),
+
   {}
 };
 
diff --git a/opts/opts.c b/opts/opts.c
index 6cb806c..7a811f0 100644
--- a/opts/opts.c
+++ b/opts/opts.c
@@ -5,13 +5,32 @@
 #include <stdio.h>
 #include <limits.h>
 
+static int option_handler_print(option_t *option, char *data);
+static int option_handler_set(option_t *option, char *data);
+
+#define OPTION_VALUE_LIST_SEP ","
+
 static void print_help(option_t *options)
 {
   for (int i = 0; options[i].name; i++) {
     option_t *option = &options[i];
+
     printf("%40s\t", option->name);
 
-    if (option->value_string) {
+    if (option->value_list) {
+      char *string = option->value_list;
+      char *token;
+      int tokens = 0;
+
+      while (token = strsep(&string, OPTION_VALUE_LIST_SEP)) {
+        if (tokens++ > 0)
+          printf("\n%40s\t", "");
+        printf("%s", token);
+      }
+
+      if (!tokens)
+        printf("(none)");
+    } else if (option->value_string) {
       printf(option->format, option->value_string);
     } else {
       if (option->value_mapping) {
@@ -60,7 +79,16 @@ static int parse_opt(option_t *options, const char *key)
   }
 
   int ret = 0;
-  if (option->value_string) {
+  if (option->value_list) {
+    char *ptr = option->value_list;
+
+    if (*ptr) {
+      strcat(ptr, OPTION_VALUE_LIST_SEP);
+      ptr += strlen(ptr);
+    }
+
+    ret = sscanf(value, option->format, ptr);
+  } else if (option->value_string) {
     ret = sscanf(value, option->format, option->value_string);
   } else if (option->value_mapping) {
     for (int j = 0; option->value_mapping[j].name; j++) {
diff --git a/opts/opts.h b/opts/opts.h
index db6b33e..70887c0 100644
--- a/opts/opts.h
+++ b/opts/opts.h
@@ -10,6 +10,7 @@ typedef struct option_value_s {
 typedef struct options_s {
   const char *name;
   char *value_string;
+  char *value_list;
   union {
     unsigned *value;
     unsigned *value_uint;
@@ -35,6 +36,7 @@ typedef struct options_s {
 #define OPTION_FORMAT_bool   "%d"
 #define OPTION_FORMAT_float  "%f"
 #define OPTION_FORMAT_string "%s"
+#define OPTION_FORMAT_list "%s"
 
 #define DEFINE_OPTION(_section, _name, _type) \
   { \