Canon RF卡口本的SIGMA 18-50mm F2.8 DC DN｜Contemporary，其光学结构和另外三个版本一致，皆采用10群13枚的镜组结构设计，其中包含1枚SLD超底色散镜片、3枚非球面镜片，能提供优异的画质表现。当与APS-C片幅的EOS R系列相机衔接，拥有等效约29-80mm的焦段范围，并且全焦段皆有恒定F2.8的最大光圈，非常适合...
SIGMA日前于官网公布Canon RF卡口版本的16mm F1.4、23mm F1.4、30mm F1.4、56mm F1.4定焦镜的发售日期，分别会落在12/5及1月。自从SIGMA在今年4月宣布推出Canon RF卡口版本的六款APS-C片幅镜头后，目前18-50mm F2.8 DC DN | Contemporary和10-18mm F2.8 DC DN | Contemporary已经陆续上市。而如...
Sigma has announced that it will release Canon RF mount options to 6 of its APS-C Contemporary lensesWhen you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: Sigma) Since the launch of the Canon EOS R system, C...
Earlier this week, Canon Rumors reported that Sigma has created a roadmap for Canon RF lenses and that this roadmap will be unveiled in “early 2020.” According to Canon Rumors, “distributors have received some early information about Sigma’s plans,” though nothing has been released to ...
When both Canon and Sigma decide they can make money doing that. My guess is that Canon wants more in licensing fees than Sigma or anybody else is willing to pay. Canon's problem with RF-S was that just about every R7 reviewer said that the camera is grea...
一直都没有开放授权第三方镜头厂生产RF-mount镜头的Canon，日前突然打破这项“传统”。而首批会推出RF-mount镜头的品牌，将会是SIGMA和TAMRON两家。不过初期确定以APS-C片幅镜头为主，至于日后会不会推出全画幅无反相机专用的RF-mount镜头，目前并不得而知。SIGMA日前在官网宣布，预计最快将于2024年7月开始推出以下6...
【顾俊】适马Sigma 40mm f1.4 Art,目前为止最好的Art ( VS Canon RF 50L & EF 35L ii )。听TED演讲,看国内、国际名校好课,就在网易公开课
苏宁易购为您提供适马(SIGMA)镜头和佳能(Canon)RF 24-105mm F4 L IS USM 全画幅微单标准变焦镜头 全画幅微单红圈镜头 佳能卡口 适合EOS RP EOS R微单相机参数对比,让您了解适马(SIGMA)镜头和佳能(Canon)RF 24-105mm F4 L IS USM 全画幅微单标准变焦镜头 全画幅微单红圈镜头
为什么Canon RF 50mm f/1.2L USM优于Sigma 40mm f/1.4 DG HSM Art? 最短焦距的光圈大14.29% ? f/1.2vsf/1.4 0.2f更宽的光圈在最大焦距 ? f/1.2vsf/1.4 250 g 重量差距 ? 950 gvs1.2 kg 最长焦距多10 mm ? 50 mmvs40 mm 0.04x 放大倍数更多 ...
the current wide angle DSLR Sigma lenses are either too heavy (bulky), not the right focal length. I'm hoping for an RF14-35 II with internal zoom. That will take some years. Perhaps Sigma released an internal zoom Canon FF mirrorless wide-angle lens before then. Then that is of cours...