ELMARIT-S 30 f/2.8 ASPH. (CS)
The super-wide lens
A wider view of the world
The Elmarit-S 30 f/2.8 ASPH. (24 mm in 35 mm format) almost belongs in the domain of superwide lenses. At the same time, the lens is optimized for maximum contrast rendition and top resolution from its widest aperture on, and it guarantees a constantly high level of quality from its closest focusing distance to infinity.
The extraordinary degree of correction of this optical design is reflected, for example, in its almost complete freedom from distortion. The Elmarit-S 30 f/2.8 ASPH. (CS) is also available with central shutter.
For creative image composition
Innovative central shutterfor maximum design freedom when using additional light
For creative image compositions
Excellent imaging performance over the entire range and at all aperture settings
Creative use of sharpness and blurring for the plastic extraction of motif details
Best image quality up to the edges due to aspherical optics
Weather- and dust-sealed lens
Of its 13 elements in nine groups, five are made of glasses with anomalous partial dispersion. Three of these are fluoride lens elements with particularly low dispersion for the correction of chromatic aberrations. Three elements with a particularly high refractive index and two aspherical elements minimize monochromatic aberration.
Only the rear group, containing six elements, moves during focusing, which, in this design, ensures excellent performance from infinity to its closest focusing range.
Modulation Transfer Function
The MTF is indicated both at full aperture and at f/5.6 and f/8 at long taking distances (infinity).
Shown is the contrast in percentage for 5, 10, 20 and 40 lp/mm across the height of the 35mm film format, for tangential (dotted line) and sagittal (solid line) structures, in white light. The 5 and 10 lp/mm will give an indication regarding the contrast ratio for large object structures. The 20 and 40 lp/mm records the resolution of finer and finest object structures.
Distortion & vignetting
Distortion is the deviation of the real image height (in the picture) from the ideal image height. The relative distortion is the percentage deviation. The ideal image height results from the object height and the magnification. The image height of 27.04mm is the radial distance between the edge and the middle of the image field for the format 30mm×45mm.