I have a Bessa r3a with a 40mm nokton and 21mm color skopar that I use for either opportunistic snapping or the occasional landscape type shot if I'm going somehwere that I might struggle to take my MF and tripod along to. I've volunteered my services to do the pictures at my brother's wedding in May. the 21mm CS is just too wide for the formal type pics I'll be doing, so I doubt I'll be using that (much). The 40mm will be fine for group type shots, but experience tells me that it is a little wide for shots of the happy couple, or head and shoulders type portrait. So ... I've thinking on getting a longer focal length lens. I'm toying between 50mm skopar or Nokton and 75mm heliar at the moment. If I were to stick with the 50mm, I've then to chose between the Nokton and the Skopar ... I suppose the nokton would be good for indoor/ low light shots, but I can have that covered with the 40mm nokton. What are people's experiences of these lenses? How do they perform in use? thanks in advance PS - I'll be using a couple of MF cameras too, so I suppose the r3a will be used for more grab-type shots and the indoor bit.