Sigma 400mm f / 2.8 DG OS HSM oghere elere anya

Sigma emeela patent ọhụụ kacha ọhụrụ na telephoto maka igwefoto DSLR zuru ezu. Ọ na-enye 400mm gbadoro anya n'ogologo yana oghere kachasị nke f / 2.8 ma a ga-agbakwunye ya na usoro egwuregwu nke ụlọ ọrụ ahụ.

Anya elekere kachasị ọhụrụ nke Sigma ga-ewebata bụ otu akụkụ dị obosara nke nwere oghere dị 24mm na oghere f / 1.4 kachasị elu. Ọ bụ ekpughere na mbido February 2015, nri tupu mmalite nke CP + Camera & Photo Imaging Show 2015 ihe omume.

Mgbe ụlọ ọrụ hinted na ihe ntanetị 24-70mm f / 2.8 nwere ike ibu onye ochichi n'oge na-adighi anya, o nwebatala uzo ozo di iche, nke gha abu uzo nke uzo ozo. Isi mmalite ndị dị na Japan achọpụtala na Sigma ejirila ngwa ngwa 400mm f / 2.8 DG OS HSM mee ka ụdị egwuregwu dị iche iche, nke a ga-elebara anya na ndị na-ese foto.

Nke a bụ otú oghere Sigma 400mm f / 2.8 DG OS HSM si ele anya n'ime.

Patent maka Sigma 400mm f / 2.8 DG OS HSM oghere anya na-egosi na Japan

Otu n'ime ndị mebere lens nke atọ kachasị otuto, Sigma, nwere ike iji ngwaahịa ọzọ were ụwa na mberede. Kemgbe ọ kewasịrị usoro ntinye ya n'okwu atọ, ụlọ ọrụ ahụ ebuputala ngwa ngwa nke ukwuu.

Maka oge a, usoro egwuregwu ahụ nwere nkeji abụọ: 150-600mm f / 5-6.3 DG OS HSM na 120-300mm f / 2.8 DG OS HSM. Ha abụọ bụ ụdị mbugharị telephoto, mana nke atọ nwere ike ịbụ ọkwa telephoto.

Achọpụtala patent lens Sigma 400mm f / 2.8 DG OS HSM na Japan. Dị nnọọ ka ụmụnne ya, e mepụtara ya maka igwefoto DSLR nwere ihe mmetụta zuru oke ma ọ na-abịa juputara na arụnyere ngwa ọrụ iji belata mmetụta nke ịkwa amị igwefoto ma nye ndị na-ese foto ohere ịse foto dị ukwuu ọbụlagodi na obere ọkụ ọnọdụ.

A na-ekwu na oghere ahụ nwere ebe dịkarịsịrị elekwasị anya nke mita 2.7, yabụ ndị ọrụ ga-enwe ike ịchekwa ezigbo ndị ha na-achị n'oge oge ịse foto.

Anya Sigma 400mm f / 2.8 na-arụ ọrụ nlebara anya n'ime

Edere patent maka oghere Sigma 400mm f / 2.8 DG OS HSM na Septemba 4, 2013 ma kwado ya na Eprel 9, 2015.

The optic si esịtidem imewe mejupụtara 16 ọcha kewara 12 iche iche. Ọ gụnyere ihe anọ FLD (F Low Dispersion) element na ELD (Extraordinary Low Dispersion) element.

N’akụkụ usoro mgbochi ịma jijiji, oghere ahụ na-egosipụtakwa usoro dị n’ime. Nke a pụtara na oghere elekere dị n’ihu anaghị agagharị mgbe ọ na-elekwasị anya, njirimara nke ndị na-ese foto nabatara na-eji nzacha na ngwa ndị ọzọ na anya ha.

Ọ ga-abụ ihe na-akpali mmasị ịhụ ngwaahịa a na ahịa. Agbanyeghị, ọ gaghị adị ọnụ ala, yabụ ị nwere ike ịmalite ịchekwa ugbu a. Kedu ụzọ ọ bụla, ọ ka nwere ike ịnwe ogologo ụzọ ị ga-esi site na patent gaa ngwaahịa n'ezie, yabụ, ejidela ume gị na ya.