50mm f4.5

  • Angle of View: 82 deg
  • Construction: 11 elements/8 groups
  • Filter Size: 77mm
  • Minimum Focus: ?
  • Weight: 920g
  • Minimum aperture: 32


  • Robert
    February 6, 2012 - 12:09 pm | Permalink

    Anyone have any vignetting issues with the 50mm non-C? I taking a step back in time by getting rid of the digital SLR and getting an RB67. Just had my first trip with it to Iceland and had a few frames with some vignetting or light fallow on the edges. Not sure if it was my filter or something else? Thanks

    • jodys
      February 17, 2012 - 3:26 pm | Permalink

      That is a bit perplexing–I have a 50mm C and haven’t noticed any vignetting. Please, keep us posted if you discover it was the lens.

  • Panoramic PEI
    July 19, 2013 - 3:59 pm | Permalink

    Probably should have posted here instead…..apologize for the repeat.
    I recently purchased some Mamiya RB SD gear separately from all over the place.
    I just received the 50mm RB Sekor C Lens, although I haven’t received the Mamiya RB SD Body as yet.
    There is a noticeable clunking sound as some slight glass movement, just wondering if this is normal as it might something to do with the floating element or is it a defect? All appears normal visually.
    Also this lens has a silver collar on the rear of the lens, would it signify I will absolutely need the Mamiya Spacer Adapter for use with the Mamiya RB SD? Your replies are greatly appreciated.

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