Leica 21mm F4.0 Super Angulon R, IWF 24 x 36 (Conversion Only)

Leica 21mm F4.0 Super Angulon R, IWF 24 x 36 (Conversion Only)

Product no.: 68/15121 (Type: Conversion of owner supplied lens)

Still in stock
can be shipped within circa 90 days days

Price without VAT or delivery
Delivery weight: 2.2 kg

(Image shown is of the 24mm which is representative of size and general concept.)

Leica 21mm F4.0 Super Angulon R, IWF, full 24 x 36 coverage Wireform™ lens movement in PL mount.

This is an ultra wide angle Leica optic. After conversion this becomes a close focus lens with a Macro capability but does not reach full 1:1. It does, however, retain all the features of a standard 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 separately computed focus helix to achieve the best possible focus scale for the particular focal length now using the inverted Wireform™  design (IWF).

Van Diemen Lenses are assembled to client order in mount of clients choice and scaled metres or feet. Other lens mounts may be possible please contact us for more information.

All Van Diemen Wireform™ conversions are now supplied with dual iris scales as a standard feature and uniform 114mm front diameter, however, can also supply other larger diameters on request.

Additional product information

Handbook Download
LENS 21mm          020718
Nominal Focal Length 21mm
F/No. 2.8
Max Stop 22
Front Diameter 114mm 
Length (front to focal plane) TBA
Weight TBA
Iris Gearing Dual Scaled Ø120mm 32DP 149 Teeth
Focus Gearing Ø120mm 32DP 149 Teeth

Angle of View



Full 24x36

Min Distance (scaled) TBA

Lens construction


Back Focus adjustment Shims



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


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.


Type Conversion of owner supplied lens

Selection: Leica 21mm F4.0 Super Angulon R, IWF 24 x 36 PL

Product no. Type Price
68/15121 Conversion of owner supplied lens £3,400.00 *
68/151210 Van Diemen Wireform™ (Lens Supplied) £4,400.00 *
Prices without VAT or delivery

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Browse this category: Van Diemen Leica Lenses