The Distagon® T* 4/40 IF CFE lens is a sophisticated super wide angle lens with outstanding performance. It is designed for the 6 x 6 format. Compared to its predecessor it is improved in several aspects:
The optical performance is unusually good even at wide open aperture. Detail resolutions up to 200 lp/mm can be reached on films with adequate resolving power. With this potential the Distagon T* 4/40 IF CFE lens recommends itself for aerial photography and other very demanding tasks.
The Distagon T* 4/40 IF CFE lens is particularly suited to be used with digital backs in professional studio photography. Here, it is a shorter focal length alternative to the digitally well-accepted lens Makro-Planar® T* 4/120 CFE.
The Distagon T* 4/40 IF CFE lens features internal focusing and automatic optimisation of correction over the entire focusing range from infinity to close-up. A newly developed focusing mechanism with reduced torque enables smooth and precise focusing. The ergonomics are further enhanced by the focusing ring being much wider and better positioned than that of the predecessor.
|Focal length||51.7 mm|
|Aperture range||f/2.8 - f/22|
|Angular field (hor./vert./diag.)||57°/57°/75°|
|Focusing range (from film plane)||0.42 m - ∞|
|Working range (from front end)||0.2 m|
|Number of elements/groups||9/8|
|Image ratio at closest range||1 : 4.7|
|Negative-size||55 x 55 mm|
|Coverage at close range||262 mm x 262 mm|
|Filter connection||M 86 x 1|
|Dimensions||Ø 69.9 mm, length 105.2 mm|