Since this is my first post, i would like to introduce myself. My name is Guillaume. I got into photography and DSLR camera's about a year ago. i bought a d60 for my first dslr, since the price was pretty low and after reading some review i gave it a shot. overall its a great camera. After a few months of playing with the camera, testing, doing small shoot for friends and family, the camera's lack of advanced features started keeping me from experiencing more technical stuff. So 2 weeks ago, i sold my d60 and bought a d90. the body is amazing, i really like it. I thought about buying the D300s but it was out of my budget for now and couldn't see myself hauling that heavy camera around. Once i master the D90 and everything it has to offer me then i will think about getting a pro camera and keep the d90 for my wife. I have a friend photographer and she was nice enough to give me all the equipement i needed to setup a home studio to practice and learn. after setting everything up, i ran into a small problem that i am pretty sure some of you experienced before.... Here is the setup i had. 1 X 9" wide ultra white background mounted with a background stand. room is 24 X 24. 1 X OPUS L150 studio strobe mounted on tripod/umbrella as a main light 1 X SB-600 as a background flash 1 X sb-600 that i move around to created different effect. My camera was set to commander mode to fire both sb-600 and the strobe has a built in optical trigger. Both sb-600s was firing correctly using ITTL but the light produced by the strobe was not showing on the pictures. after doing a little bit of research, i found out that CLS is using a pre flash to calculate exposure then trigger the sb's using infrared pulse. That pre flash is firing the damn strobe a little bit too soon. problem would be solved if the d90 had a pc port but it doesn't have one. the cheapest solution i found was to use optical triggers on both my sb-600s and set my on camera flash to manual 1/128 (no pre flash using manual mode) so everything fires together. Not a bad/inexpensive solution but it leaves me without CLS and this is what i wanted to experiment and test. i would like to be able to fire those sb-600 with cls while using the strobe but if i use the commander mode to fire them, pre-flash is on. i know that i can use an as-15 on my hot shoes to sync the strobe but this will leave me without cls on the sb's any suggestions? Thanks i am also building a website with some pictures i did. mostly friends and family, my wife, my dogs, landscapes and cars all taken with my d60 the 18-55mm that came with it. Photography By Guillaume - Home its not completed yet so don't be afraid if there is latin words on some pages. Enjoy!