The Canon RF 24-105mm f4 L IS USM is the quintessential walkaround lens for Canon EOS R owners. As a former Canon DSLR owner, I’ve always had a complicated relationship with lenses like the Product Description. Canon EF 24 105mm lens delivers amazing image quality with advanced image stabilization. This EF 24 105mm lens is perfect for travel photography.If you want to take only one lens and not carry the entire kit, then the Canon EF 24 105mm f/4L IS II USM SLR Lens is an ideal pick for you. I knew it wasn’t top-of-the-line Canon, but it worked well for me. Along came the 24~105 offering portability (only a wee bit heavier than the 28~135), good zoom range and top quality at three times the price. Quandary: is it worth sinking about USD $1250 on top of the $400 I spent last year on the 28~135? The solution: test and see. On this review photographer Christopher Frost looks at two popular Canon zoom lenses the old and new EF 24-105mm f/4 to see what changed. The Canon EF 24-105mm f/4L IS USM has been around for a long time not just as a kit lens for some of Canon’s full frame cameras but also as a general purpose zoom lens. The newer Canon EF 24-105mm f/4 L IS 24-70 is sharper and faster and $1000 more expensive. You get what you pay for. If street is most important the low light benefit of the faster lens probably isn’t necessary. A lot of wedding photographers like the 24-70 for dark indoor photography. The RF 24-105 f4 kicks the EF 24-105 f4 ver.1 in the you know what. Canon RF 24-50mm F4.5-6.3 IS STM In-depth testing Latest Camera Reviews Beyond the studio Personally I will buy only 2 RF lenses when I get the R5: - RF 24-105 f/4 for general purpose/landscape/travel photography. The 35mm advantage over the 24-70 is not negligible and at 105mm f/4 your DoF will be as shallow as 70mm f/2.8. The 40mm f/2.8 pancake was the first. For taking pictures, STM is a bit slower than USM, but the difference is not great. The 24-105 mm f/3.5-5.6 IS STM is quick to focus in practice. The STM engine is a fraction quieter than the USM motor, and the accuracy turned out to be higher during our laboratory tests than with the 24-105 mm with USM motor. Canon's EF 24-105mm f4L is the ideal general-purpose zoom for owners of full-frame bodies, covering wide-angle to short telephoto with quick and quiet USM focusing, Image Stabilisation, decent manual focusing and 'L' quality; and as an L lens you also get a lens hood. Mounted on a cropped-body, it misses out on true wide-angle coverage, but The kit zoom is great - better than the EF 24-105 L. Adapted Canon glass works perfectly. Touch screen controls (ie, AF) are super fast - no lag. Jpegs sooc look great. I havent had time to mess with the Raw files in Lightroom, so not sure about dynamic range, etc. Been shooting some 4K with an adapted Canon EF 24mm (2.8 IS) and it really looks uzyZ.