Yeah!!! there is Hope for all EF Mount User!!!! :blah:
It is held on 2004 September 28th - October 2nd, the photo cinchona 2004 (Germany: Kernel city) being similar, corporation タムロン (Representative President: Ono Mori man), digital single-lens reflex camera (APS-C size suitable *) private advanced super wide angular zoom lens
' SP AF11-18 mm F/4.5-5.6 Di II LD Aspherical [ IF ] '
We announce. * Below (APS-C size suitable) it abbreviates
' SP AF11-18 mm F/4.5-5.6 Di II LD Aspherical [ IF ] ', it is the digital single-lens reflex camera private super wide angular zoom lens which タムロン developed for the first time. It corresponds to the needs of the digital single-lens reflex camera user which overtakes wide angular expression, it actualizes the size whose efficiency and the balance which can be relied on are good.
It did the optical design which is considered in use with the digital single-lens reflex camera, added and the large aperture glass mold aspheric surface and the compound aspheric surface, uniqueness adopted special 硝 material such as dispersion and high refractive index high dispersed lens low, generously actualized high descriptive efficiency.
*Di II (Digital l y integrated design): The digital single-lens reflex camera (with the APS-C size suitable) private lens, the optical design which is considered in quality of the digital camera is adopted.
* The digital single-lens reflex camera and 35 mm films which are larger than APS-C size suitable (the silver salt) you cannot use for single-lens reflex image pickup element size.
1. Digital single-lens reflex camera private lens birth.
With the digital single-lens reflex camera private design, focal length of the lenses for 35 mm film 17-28 actualizing the super wide angular zoom lens which covers the angle of view which almost is equal to mm. It can enjoy wide angle of view expression the digital single-lens reflex camera private lens which this time was developed simultaneously 18-200 combining with mm.
2. Adopting the optical design which is considered in quality of the digital camera.
HID (high refractive index high dispersion) the lens * 1 and LD (uniqueness low dispersion) the lens * 1 was adopted, on the axis which becomes the drag of high picture quality conversion and magnification ratio chromatic aberration was thorough was revised. Furthermore, 1 high accuracy large aperture glass mold aspherical lens, 2 compound aspherical lenses you used, revised aberrations such as spherical aberration, coma and distortion quite actualized high descriptive efficiency.
* HID (High Index High Dispersion/high refractive index high dispersion) glass
* LD (Low Dispersion/uniqueness it is low dispersion) the glass
3. Angle of the light which incidence is done was considered in the image pickup element, the optical design which is optimum to the digital single-lens reflex camera
It considers even in influence of the aberration fluctuation, with zoom in order from the picture center to around in the image pickup element to supply the angle of the light which incidence is done inside the fixed range, it adopts the optical design which is considered.
4. Controlling the decrease of the peripheral light intensity
Decrease of the peripheral light intensity is controlled substantially by comparison with the lens which is designed to the one for former film camera, picture uniform description is actualized from the center to around.
5. Actualizing high resolution efficiency
As a lens of SP Di II class, the picture quality which is superior in high resolution efficiency, high contrast efficiency and change of cross level was actualized.
6. In order to do the ghost flare measure which it is thorough, adopting internal surface coating positively.
In order to hold down the picture quality decrease with reflection and the influence of the image pickup element with the light from the lens front surface, adoption and internal surface coating of the multiple coat which was developed anew (multiple coat to the lens pasting together aspect) you have adopted positively.
7. The star hood which is superior in shade characteristic standard equipment
Because the descriptive efficiency whose coming out is good with clearing is actualized, the harmful light ray which shines from outside angle of view and is packed square of the picture it was and standard it equipped the star hood which is cut with the effective form which is suited for the frame.
8. As "a Di II" series adopting the design which expresses "the high performance and the Kousei density impression," matches to the new digital generation lens.
Adopting the ring of gold color for the ring part which becomes an important point in regard to design. Visibility and improvement of design as "a Di II" lens series were assured.
Adopting new rubber pattern in the zoom focusing ring. When installing in the camera, one bodily sensation, you have considered in the operation impression.
Model name A 13
Focal length 11-18mm
Angle of view 103-75° (APS-C size suitable)
Lens constitution 15 12 groups
Shortest photographing distance 0.25m (zoom all)
Filter diameter 77mm
Total length 78.6mm*
Largest diameter 83.2mm*
Mass 375 g (design outline value *)
Contraction feather quantity 7
Smallest contraction F/22
Standard accessory Star hood
Corresponding mount Nikon AF/CANON for AF/Konica Minolta AF