The Distagon T* 2/25 enables creative photography with interesting perspectives – even in difficult lighting conditions. Without a tripod, exquisitely sharp, wide-angle shots work every time. The large angular field creates a dynamic yet natural effect. With excellent image quality from the widest aperture onwards, the Distagon T* 2/25 achieves great results – from interiors to stunning outdoor expanses.
Useful features such as two aspheric lens elements surfaces to correct distortion and a floating elements design ensure that you can vividly capture details framed from your own, unique perspective.
|Focal length||25 mm|
|Aperture range||f/2.0 – f/22
|Focusing range||0.25 m – ∞
|Number of elements/groups||11/10|
|Angular field, diag./horiz./vert.||81°/71°/51°|
|Coverage at close range||219 x 144 mm|
|Filter thread||M 67 x 0.75|
|Dimensions (with caps)||ø 71-73 mm, length 95-98 mm|
|Weight||570g - 600g|
|Camera mounts||EF mount (ZE), F Mount (ZF.2)
When wide angle views go to extremes and beg the control via an SLR viewfinder, which means that the back focal distance has to be much larger than the focal length, a retrofous design called Distagon is the right choice.
|Distagon with 11 lens elements in 10 groups|
|Lens with aspheric optical surface|
|Lens made of special glass with anomalous partial dispersion|
|"Floating Elements" design|
The aspherical lens design ensures consistent imaging performance throughout the entire focusing range as well as sharpness to the periphery of the image. The asphere's more complex surface profile can reduce or eliminate spherical aberration and also reduce other optical aberrations compared to a simple lens.
State-of-the-art camera techniques and high-resolution digital image sensors increasingly demand more from the lenses. The modern floating element design compensates aberrations of the Carl Zeiss SLR lenses at different distance settings. This is accomplished by changing the axial distance of single lens elements or element groups to each other. The adjustment of the element distance is coupled to the distance setting so that it always results in the right correction. The mechanical design of these lens elements is very complex and the workmanship must be particularly exact – both specialties of Carl Zeiss.
Dramatic perspectives and a view from extraordinary image angles – SLR lenses from Carl Zeiss open up new composition possibilities. Distortion would disrupt the composition because straight lines, whose image does not go through the image center, would be reproduced with a curved shape. This annoying effect is accordingly and largely compensated through elaborate optical designs at all focal lengths.
Photographers want to guide the observer through the image. Minimal depth of focus is often used as a design element. This keeps the background intentionally blurred to keep the attention of the observer on the main subject. These different representations of the blurred areas, as well as the quality of the transition, are referred to as the Bokeh of a lens. The finely tuned features of the optical design on Carl Zeiss SLR lenses ensure a particularly harmonious effect of the blurred areas of the image. The nine diaphragm blades and the resulting, virtually circular aperture on Carl Zeiss SLR lenses are crucial to favorable rendition of highlights in the fore and background.
Great low-light shots start with a great lens for your DSLR camera. A high-speed lens captures as much light as possible. A lens with a wide maximum aperture offers the best results in difficult lighting conditions.
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