68/1521 Leica 21mm F1.4 Summilux M. IWF conversion
  • 68/1521 Leica 21mm F1.4 Summilux M. IWF conversion


    This is a wide-angle Leica optic conversion. After conversion this becomes a close focus lens with Macro capability but does not reach full 1:1. It does, however, retain all the features of the high speed lens. This versatility is possible because of the patented Wireform™ variable pitch lens movement incorporated in the construction. An additional characteristic of this lens is its light weight, a feature made possible by the patented mechanical design. The combination of these characteristics make this lens particularly suitable for applications where weight and precise control of focus are important, for example with camera stabilization equipment and hand held use. All the Leica range IWF conversions benefit from internal focus and are fully geared for motorization. Each focal length has a selected focus helix to achieve the best possible focus scale for the particular focal length using the latest inverted Wireform™  design (IWF).

    Van Diemen Lenses are assembled to client order in mount of clients choice and scaled metres or feet. 


    Lenses are supplied in PL or LPL mount with other options available on request.

    SKU: 68/1521


      Leica 21mm F1.4 Summilux M IWF


      Nominal Focal Length




      Max Stop


      Front Diameter


      Build style

      Short Body Macro Unscaled



      Iris Gearing Dual Scaled

      Ø120mm 32DP 149 Teeth

      Focus Gearing

      Ø120mm 32DP 149 Teeth

      Angle of View



      Full 24x36

      Min Distance (scaled)


      Lens construction



      Back Focus adjustment


    • TERMS


      Van Diemen aim to deliver within 90 days of receipt of order and 50% deposit/prepayment. We are unable to guarantee delivery times as they vary according to factory loading and availability of parts at the time of order.


      Various methods of payment are available via the website which are detailed in the website order processing. We do not accept Pay Pal payment for lens conversion work as Pay Pal terms and conditions conflict directly with the necessary conditions we work under for conversion work.


      We offer a full 2 year warranty with every Van Diemen Wireform™ product. This however does not extend to optical units on conversion products as they are supplied direct by the client.


      Warranty is applicable ex works Camberley, UK. It is the responsibility of the client to cover shipping and insurance to and from Van Diemen for all product sales and warranty work.

      Delivery Terms on Established Products

      Van Diemen Films Ltd now offer a 'Call In' service to clients in order to reduce the down time of working lenses. We offer to call in your lenses when your assembly slot comes due, normally within 90 days of order and agreement of terms. Once the lens is received, we aim to deliver within 30 days.