还记得，我曾在某标准变焦的体验中写道： 在日常的实际使用中，标准变焦用的更多的，是中长焦。 谁能想到，短短几年我就迎来了“打脸”时刻…… 印象当中， 无反时代迎来的首枚「超规格」镜头，是佳能在 2018 年发布的 RF 28-70mm F2.0 L USM。 其后，各大厂商便逐渐开始在新变焦上做更多的「超规格」试验。 只不过， 受到一堆众所周知的因素影响，「超规格」镜头想要“取代”原有规格成为新一 ...

Rheumatoid factor (RF) levels above a normal range can indicate autoimmune conditions, such as rheumatoid arthritis (RA). Rheumatoid factor (RF) is an immune system protein that attacks healthy cells.

The Canon RF ... Ultimately, the lens folds down to just 77 x 92mm (3 x 3.6") and weighs a mere 490g (1.1lb), which suits me just fine. And sure, the RF 28-70mm f/2L USM is faster and has an ...

Do you use a Canon EOS R mirrorless camera? From wide-angle to telephoto, these are the best lenses we've tested for the platform. Images, and the devices that capture them, are my focus.

If you're open to manual focus, you can also use virtually any vintage lens, it's just a matter of finding the All of Canon's R cameras and RF lenses include full-frame sensors. It's a departure ...

The Mega Millions jackpot has risen to $44 million for Tuesday's drawing after no one won the top prize on Friday night. If someone should match all six numbers in the Tuesday night drawing, they ...

The RF 16-28mm F2.8 IS STM is Canon's newly launched ultra-wide full-frame lens offering powerful creativity, a fast f/2.8 aperture, 5.5-stop optical image stabilization, and a compact design for ...

Jan. 28 (UPI) --Those born on this date are under the sign of Aquarius. They include: Advertisement -- Roman Catholic St. Thomas Aquinas in 1225 -- English King Henry VII in 1457 -- Cuban ...

Canon has announced the RF 16-28mm F2.8 IS STM, a fast wide-angle full-frame zoom that's meant to be a more budget-friendly option for people looking to shoot photos and videos. The lens is ...

Canon has announced the RF16-28mm F2.8 IS STM, a new full-frame RF mount wide-angle zoom lens for the EOS R mirrorless system. Equipped with a bright f/2.8 constant aperture, the RF16-28mm F2.8 IS ...