Index: source/blender/editors/space_view3d/view3d_ops.c
===================================================================
--- source/blender/editors/space_view3d/view3d_ops.c	(revision 57888)
+++ source/blender/editors/space_view3d/view3d_ops.c	(working copy)
@@ -138,6 +138,7 @@
 	WM_operatortype_append(VIEW3D_OT_view_all);
 	WM_operatortype_append(VIEW3D_OT_viewnumpad);
 	WM_operatortype_append(VIEW3D_OT_view_orbit);
+	WM_operatortype_append(VIEW3D_OT_view_roll);
 	WM_operatortype_append(VIEW3D_OT_view_pan);
 	WM_operatortype_append(VIEW3D_OT_view_persportho);
 	WM_operatortype_append(VIEW3D_OT_background_image_add);
@@ -274,7 +275,9 @@
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", PAD4, KM_PRESS, KM_CTRL, 0)->ptr, "type", V3D_VIEW_PANLEFT);
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", PAD6, KM_PRESS, KM_CTRL, 0)->ptr, "type", V3D_VIEW_PANRIGHT);
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", PAD8, KM_PRESS, KM_CTRL, 0)->ptr, "type", V3D_VIEW_PANUP);
-	
+	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_roll", PAD4, KM_PRESS, KM_SHIFT, 0)->ptr, "type", V3D_VIEW_STEPLEFT);
+	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_roll", PAD6, KM_PRESS, KM_SHIFT, 0)->ptr, "type", V3D_VIEW_STEPRIGHT);
+
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", WHEELUPMOUSE, KM_PRESS, KM_CTRL, 0)->ptr, "type", V3D_VIEW_PANRIGHT);
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", WHEELDOWNMOUSE, KM_PRESS, KM_CTRL, 0)->ptr, "type", V3D_VIEW_PANLEFT);
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_pan", WHEELUPMOUSE, KM_PRESS, KM_SHIFT, 0)->ptr, "type", V3D_VIEW_PANUP);
@@ -285,6 +288,9 @@
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_orbit", WHEELUPMOUSE, KM_PRESS, KM_SHIFT | KM_ALT, 0)->ptr, "type", V3D_VIEW_STEPUP);
 	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_orbit", WHEELDOWNMOUSE, KM_PRESS, KM_SHIFT | KM_ALT, 0)->ptr, "type", V3D_VIEW_STEPDOWN);
 	
+	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_roll", WHEELUPMOUSE, KM_PRESS, KM_CTRL | KM_SHIFT, 0)->ptr, "type", V3D_VIEW_STEPLEFT);
+	RNA_enum_set(WM_keymap_add_item(keymap, "VIEW3D_OT_view_roll", WHEELDOWNMOUSE, KM_PRESS, KM_CTRL | KM_SHIFT, 0)->ptr, "type", V3D_VIEW_STEPRIGHT);
+
 	/* active aligned, replaces '*' key in 2.4x */
 	kmi = WM_keymap_add_item(keymap, "VIEW3D_OT_viewnumpad", PAD1, KM_PRESS, KM_SHIFT, 0);
 	RNA_enum_set(kmi->ptr, "type", RV3D_VIEW_FRONT);
Index: source/blender/editors/space_view3d/view3d_intern.h
===================================================================
--- source/blender/editors/space_view3d/view3d_intern.h	(revision 57888)
+++ source/blender/editors/space_view3d/view3d_intern.h	(working copy)
@@ -94,6 +94,7 @@
 void VIEW3D_OT_background_image_add(struct wmOperatorType *ot);
 void VIEW3D_OT_background_image_remove(struct wmOperatorType *ot);
 void VIEW3D_OT_view_orbit(struct wmOperatorType *ot);
+void VIEW3D_OT_view_roll(struct wmOperatorType *ot);
 void VIEW3D_OT_clip_border(struct wmOperatorType *ot);
 void VIEW3D_OT_cursor3d(struct wmOperatorType *ot);
 void VIEW3D_OT_manipulator(struct wmOperatorType *ot);
Index: source/blender/editors/space_view3d/view3d_edit.c
===================================================================
--- source/blender/editors/space_view3d/view3d_edit.c	(revision 57888)
+++ source/blender/editors/space_view3d/view3d_edit.c	(working copy)
@@ -3499,6 +3499,67 @@
 	ot->prop = RNA_def_enum(ot->srna, "type", prop_view_orbit_items, 0, "Orbit", "Direction of View Orbit");
 }
 
+static EnumPropertyItem prop_view_roll_items[] = {
+	{V3D_VIEW_STEPLEFT, "ROLLLEFT", 0, "Roll Left", "Roll the view around to the Left"},
+	{V3D_VIEW_STEPRIGHT, "ROLLRIGHT", 0, "Roll Right", "Roll the view around to the Right"},
+	{0, NULL, 0, NULL, NULL}
+};
+
+static int viewroll_exec(bContext *C, wmOperator *op)
+{
+	View3D *v3d;
+	ARegion *ar;
+	RegionView3D *rv3d;
+
+	/* ED call also checks view is not locked */
+	if (ED_view3d_context_user_region(C, &v3d, &ar)) {
+		rv3d = ar->regiondata;
+		if ((rv3d->persp != RV3D_CAMOB) || ED_view3d_camera_lock_check(v3d, rv3d)) {
+			int orbitdir = RNA_enum_get(op->ptr, "type");
+			float quat_mul[4];
+			float quat_new[4];
+
+			if (ELEM(orbitdir, V3D_VIEW_STEPLEFT, V3D_VIEW_STEPRIGHT)) {
+				float angle = DEG2RADF((float)U.pad_rot_angle);
+
+				if (orbitdir == V3D_VIEW_STEPRIGHT) {
+					angle = -angle;
+				}
+
+				/* camera axis */
+				axis_angle_to_quat(quat_mul, rv3d->viewinv[2], angle);
+			}
+
+			mul_qt_qtqt(quat_new, rv3d->viewquat, quat_mul);
+			rv3d->view = RV3D_VIEW_USER;
+
+			view3d_smooth_view(C, CTX_wm_view3d(C), ar, NULL, NULL, NULL, quat_new, NULL, NULL);
+
+			return OPERATOR_FINISHED;
+		}
+	}
+
+	return OPERATOR_CANCELLED;
+}
+
+void VIEW3D_OT_view_roll(wmOperatorType *ot)
+{
+	/* identifiers */
+	ot->name = "View Roll";
+	ot->description = "Roll the view";
+	ot->idname = "VIEW3D_OT_view_roll";
+
+	/* api callbacks */
+	ot->exec = viewroll_exec;
+	ot->poll = ED_operator_rv3d_user_region_poll;
+
+	/* flags */
+	ot->flag = 0;
+
+	/* properties */
+	ot->prop = RNA_def_enum(ot->srna, "type", prop_view_roll_items, 0, "Roll", "Direction of View Roll");
+}
+
 static EnumPropertyItem prop_view_pan_items[] = {
 	{V3D_VIEW_PANLEFT, "PANLEFT", 0, "Pan Left", "Pan the view to the Left"},
 	{V3D_VIEW_PANRIGHT, "PANRIGHT", 0, "Pan Right", "Pan the view to the Right"},