Hello all, I've recently bought a second-hand Mamiya RZ67 Pro II with the 110mm Sekor lens, WLF and 120 film and Polaroid backs. It's all in lovely condition and am very pleased. However, being a relative newcomer to photography and having previously only used a Canon EOS 450D, i'm finding that calculating exposure for the Portra 160NC film i'm using is quite difficult. My DSLR certainly doesn't seem to be giving me readings i can use on the Mamiya. As a result, i'm thinking about investing in a light meter? Possibly the Sekonic L-358 on the basis that it's the most reasonably priced model that provides aperture priority mode. I mainly shoot landscapes and this a hobby rather than profession so it's unlikely it will ever be used in a studio set-up. Any advice on whether the light meter (and specifically the L-358) is the right way to go would be much appreciated.