I'm having issues experimenting with macro Photography indoors. I'm using a Nikon D7000 with a Nikon 105mm F2.8 Micro VR lens. My flash is an Older Nikon SB-26. I know, I know, I need to invest in at least an SB-600. I'm having zero success in blowing out the background, (ambient light with the flash). I know the basics of it, and have done it correctly outside in bright sunlight. I know I need to overpower the ambient light in order to blacken out the back ground. If I set my shutter speed to anything above 320 I get a picture that is half black. Is this due to the older SB-24 not being able to keep up or a power issue? I 've tried F8-F32, and same issue, or the picture is all black or half black. If I use a larger f stop, say F5 and below, picture is extremely overexposed. I've tried with the flash mounted on the camera as well as off camera at numerous heights and angles. One thing though....does the object I'm photographing have to be suspended in any way, so there is nothing immediately behind it? I've tried matrix as well as spot metering with same results. Am I getting some sort of reflection or flashback?
Any help will be apprecited.
I didn't find the right solution from the Internet.