69515 Mamiya-Sekor CN 150mm F3.5. IWF conversion

69515 Mamiya-Sekor CN 150mm F3.5. IWF conversion


This conversion of the Mamiya-Sekor CN 150mm F3.5 uses our patented variable-pitch Inverted Wireform™ focusing system to provide a very smooth and linear movement with excellent close-focus capabilities. This lens fits full frame 24 x 36, has a fixed front diameter of 114mm and comes with an additional macro scale as standard. Lenses are supplied in PL or LPL mount with other options available on request.

SKU: 69515

    Nominal Focal Length
    Max Stop
    Front Diameter 114mm
    Iris Gearing Dual Scaled
    Focus Gearing
    Angular FOV
    Min Distance (scaled)
    Back Focus adjustment Shims


    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.