62/11296_Ross London Xpres 50mm F1.9 Compact Macro IWF Conversion

62/11296_Ross London Xpres 50mm F1.9 Compact Macro IWF Conversion


This product is a conversion of a client supplied lens using the Wireform™ system.

The Van Diemen Ross London Xpres 50mm in PL mount has a complete lens movement which benefits from the Van Diemen patented Wireform™ lens focusing system.

Parts are available from stock for this conversion.

All Van Diemen Ross conversions have uniform 100mm front diameters.

Focus and iris movements have solid robust end stops.

Industry standard focus and iris gears are fitted positionally fixed on same diameter.

The lens is internal focus with a static front for mounting accessories.

The lens comes with dual iris scales as a  standard feature.

The variable pitch Wireform™ lens movement allows temperature stable smooth movements.



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


SKU: 62/11296

    LENS 50mm Ross Xpres Compact
    Nominal Focal Length 50mm
    F/No. 1.9
    Max Stop 16
    Front Diameter 100mm
    Closest focus 12" / 0.3m
    Weight 1.03kg / 2lb 4oz
    Iris Gearing Dual Scaled Ø 107mm 32DP 132 teeth Mod 8
    Focus Gearing Ø 107mm 32DP 132 teeth Mod 8
    lens coverage  (Academy **)
    Min Distance (scaled) 12" / 0.3m

    Lens construction


    Wireform™ lens focusing system
    Back Focus adjustment Shims Nominal 0.1mm fitted


    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.