Check out the best Canon RF lenses for whatever you shoot, whether you're a full frame or APS-C shooter (I've included the APS-C equivalent focal lengths for each suggestion, so you know how the ...

Designed for front of house applications, Bizet is available in tuneable white (500W) or fixed cool white (600W) and ensures superior colour rendering, boasting a CRI of 96-98 and a TM30 Rf of 94-96 ...

IES在2015年发布的对于光源显色能力的新的评价方法 ，此评价体系简称 TM-30-15。 双指标：评价光源显色不再仅仅使用一个指标，而是由两个指标——Rf 和 Rg 组成。 主要区别是：保真度指数Rf，概念上类似于CRI，评价待测光源与标准光源照射不同色样的差异性 ...

Does Regions Financial (RF) have what it takes? Let's find out. He's a coach empowering youth to dream bigger. Discover how a Regions team member helped him do the same. NORTHAMPTON, MA / ACCESS ...

The Canon RF 200-800mm f/6.3-9 IS USM is the reigning superzoom champion in terms of focal range and is impressively lightweight and compact for its reach. However, its mediocre maximum aperture does ...

“It is also a nonsurgical method of tightening the skin. RF can help to minimise the appearance of wrinkles; help improve sun damage and boost collagen production in the skin”. As mentioned ...