http://www.nikonchat.com/nikon-d50-manuals/

How do I use the SB-28 flash with my Nikon D50?
I have a Nikon D50, which ive had for years, and served me well, I bought a Speedlight SB-28 to connect, but I have trouble getting off when i press the shutter. I can use the automatic adjustment of the camera a lot, and the need for flash to get out of this … when in low light. (To enable me to rebound and the angle of the flash instead of the built in flash last night) Any suggestions easy As to how I can do this as I have the manual! aarrgghhh …? Thanks a lot to all of you … I used flash before and worked, but God knows how I did it! Be working with the D50, but what do I need to set the flash? to run on automatic? or in A or M
I see you bought before the investigations. While SB28 is a great flash (I use one in my F4), which only work in manual modes A and (not TTL) digital SLR. For digital SLR, the SB-800 or SB-600 will give full support.
Nikon D50 flash test