佳能 EF-S 10-22mm F/3.5-4.5 USM 镜头专为APS-C尺寸EOS数码单镜头反光相机设计开发的超广角变焦镜头，相当于16-35mm的视角，有两种3片非球面镜片和一片超级超低色散镜片，整个变焦范围内保持优异的成像质量，采 佳能 EF 14mm f/2.8L USM 镜头是L系列镜头中最广角及焦距最 ...

From a sweeping ultra-wide 15mm to a "wide-standard" 35mm, the Canon RF 15-35mm f/2.8L IS USM lens could be the perfect travel/architecture/street companion, especially with its fast f/2.8 maximum ...

The Canon 7D's built-in flash has a guide number rating of 39 feet (12 meters) at ISO 100, translating to a range of about 14 feet at ISO 100 with an f/2.8 lens ... 28mm @ f/3.5 135mm @ f/5.6 ...

Canon announced three new hybrid lenses in the RF70-200 F/2.8 L IS USM Z, RF24mm F/1.4 L VCM, and RF50mm F/1.4 L. The Canon RF-S7.8mm F/4 STM Dual Lens, a lens first teased during the Apple WWDC ...

Samyang Optics 135mm F2.0 ED UMC is a manual focus telephoto lens for full frame sensor sizes. It expresses vibrant color and soft out-focusing area which makes it the best lens to shoot portrait ...

135mm的焦段允许拍摄者可以在比较远的距离进行拍摄，这样既不会对被摄人物造成压迫感，又能保持相互之间交流的自然性。配合大光圈（如F2.8或更 ...

Canon continues to command a huge market share of the camera industry and for good reason: it makes some of the best DSLR, mirrorless and compact cameras available. Naturally, there's no one Canon ...

Images, and the devices that capture them, are my focus. I've covered cameras at PCMag for the past 13 years, which has given me a front row seat for the DSLR to mirrorless transition, the ...

then an EF-2 tornado touched down at about 5:40 p.m. that moved northeast from Evansville to southwest Jefferson County. Winds reached up to 135 mph in the Evansville tornado. Tornadoes can occur ...

Two years ago, EF Hutton was riding high. The bank was the top dealmaker in the speculative world of special-purpose acquisition companies, making millions taking risky startups such as Donald ...

Even its 400mm f/2.8 is light enough to hand-hold for extended periods. Sony's lineup of lenses covers a range of scenarios, and it has several for sports, including the FE 85mm f/1.4, the 135mm f ...

Four turbofans, mounted under 35-degree swept wings, power the KC-135 to takeoffs at gross weights of up to 322,500 pounds. A cargo deck above the refueling system can hold a mixed load of ...