see comparison list of flash. guidenumber of a1L is a bit smaller than a11. it is said to be ideal for macro. i would anyhow use some special milky-paper or whatsoever for macro. most important feature of a1L: its weaker than a16 but you will not miss the shot. is a quick-flash(1.5 sec). i would like to know how to replace battery. how to open the case.
there is a nice red bag with good protection. one can use it with large a16-flash. handstrap looking out. bag must be seperated for shooting.