diff -ur kkd/ov511-2.32/ov511_core.c ov511-2.32/ov511_core.c
--- kkd/ov511-2.32/ov511_core.c	2006-04-06 10:57:36.000000000 +0200
+++ ov511-2.32/ov511_core.c	2006-08-14 13:30:55.000000000 +0200
@@ -5630,7 +5630,27 @@
 	sensor_get_control(ov, OVCAMCHIP_CID_EXP, &x);
 	return sprintf(buf, "%d\n", x);
 } 
-static CLASS_DEVICE_ATTR(exposure, S_IRUGO, show_exposure, NULL);
+static ssize_t set_exposure(struct class_device *cd, const char *buf, size_t count)
+{
+	char tbuf[11];
+	struct usb_ov511 *ov = cd_to_ov(cd);
+	int x;
+
+	if (!ov->dev)
+		return -ENODEV;
+
+	// Maybe 10 is too much, but allows using "0x00000001"
+	memcpy(tbuf, buf, 10);
+	tbuf[10]='\0';
+	if (sscanf(tbuf, "%i", &x)<=0)
+		return -EINVAL;
+
+	sensor_set_control(ov, OVCAMCHIP_CID_EXP, x);
+	// maybe should check return value 
+	
+	return count;
+} 
+static CLASS_DEVICE_ATTR(exposure, S_IWUGO|S_IRUGO, show_exposure, set_exposure);
 
 static void ov_create_sysfs(struct video_device *vdev)
 {