This may be a really stupid question, I know, please don't blast me for it. I have been shooting 35mm for a while and I use a Sekonic L-358 lightmeter. I would like to move up to MF for portrature. I have been reading the forums, and understand that MF cameras need more light than 35mm. Can I still use my Sekonic, or do I need another meter for MF? By the way, I use the Sekonic in f-stop/shutter speed mode.