Photo Secretary for the F100 will download the shooting data from the F5 as well as from the F100, however it does not offer any other support for the F5. To gain full support for the F5 you must use Photo Secretary for the F5, the cables that connect both cameras to the PC are the same, therefore it would seem logical for Nikon to allow users of the F100 to purchase the F5 software seperatley, but i doubth this will happen. As it took months for Nikon to even release Photo Sec for the F5. So therefore if you have Photo Secretary for the F5 then you should be able to take the data from the F100, but i cannot be certain. Photo Secretary for the F100 will not be produced for the MAC, not from what I have been tolded anyway. James Grove On the great bug hunt - Beta testing Windows 2000 JPG Photography http://www.jpgservices.ndirect.co.uk Fax : 0121 602 0857 >I've recently purchased an F100 and have also studied, in detail, the F5. >Since there are many similarities to these two fine cameras I would like to >know if there is software for the F100 that is also compatible with the >Mac, just as PHoto Secretary for the F5 is. If anyone has a clue as to the >answer to this I would appreciate your insight. There are numerous >advantages, such as adding custom settings and downloading photo data that >I am particularly intersted in. Downloading is very desirable since the >F100 dosen't have a true multi-function back i twill only imprint data. I >hope Nikon hasn't given up on the Mac! I've got too much of an investment >in time and money in my system to make a switch to a PC and lose it all.