I have an SB27 that I use with a 601 (6006) and FM10. As such I need to switch back and forth between TTL auto and A auto. The option to do this is set by a switch in the battery compartment. With the switch suitably set you can toggle between A and TTL when powering up by holding one of the buttons down. A or TTL flashes to show it is operating in this switchable mode. The question I have is that the toggle sequence is A *flashing*, A *solid* and TTL *flashing*. I have no idea what the A solid mode is here. Can anyone help ? Also on the SB27 there is button to switch aperture on the flash unit to match that of the lens. Is this for use as a range guide only or does it affect exposure. I assume it is the former. Final question.... The FM10 and FE10 (which I understand are built by COSINA and are similar to COSINA and OLYMPUS models) come with a 35-70 f3.5-4.8 lens. The lens is marked as Nikkor. I would like to know if it is made by Nikon of is a rebadged lens. I notice that the lens on the OLYMPUS model (2000) also has the same optical specs. I would not have questioned this other than that the aperture range of 3.5-4.8 is a little unusual. is this a Nikkor or not?? Any help greatly appreciated. Paul
