duda sobre objetivos

**aereo192** · 07/10/12, 11:07:12

hola buenas a todos solo queria saber si alguien me puede explicar en los objetos tamron que la es la diferencia entre un objetivo aspherical y otro que no lo sea, he mirado en la web de tamron y no encuentro nada,
gracias de antemano.

**Ambrotipo** · 08/10/12, 19:19:44

El aspherical, minimiza, más las aberraciones que pueda tener la lente, cosa que en el otro no, vamos que es más moderna y subsana ciertos errores que pueden tener las lentes, además de optimizarlas para digital..a grandes rasgos.

**aereo192** · 08/10/12, 21:32:19

Gracias por contestar

**u420067** · 09/10/12, 12:20:50

De un catálogo de Tamron de 2008:

ASL
Hybrid Aspherical Elements

Provide the Ultimate in Image Quality and Compactness
More compact lenses with the same speed: It’s all in the barrel

Tamron uses several hybrid aspherical lens elements in the 18-250mm, 17-50mm, 28-
75mm, 28-300mm (XR Di and VC) and other lenses bearing the Aspherical designation. These innovative optics allow us to achieve the ultimate in image quality, and at the same time produce lenses that offer remarkable zoom ranges in extraordinarily compact packages, By perfecting these cutting-edge advances
for series production, Tamron has advanced the state of optical design, and virtually
eliminated spherical aberration and image distortion from the high-power-zoom series.
Through the effective application of Hybrid Aspherical Technology, one lens element can take the place of multiple elements without compromising performance. This is what allows us to produce remarkably compact long-range lenses that deliver a uniformly high level of image quality at all focal lengths and apertures.

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