The image from the Canon 28-105mm f/3.5-4.5 gets smaller as focused more closely. This effect is stronger at the longer focal lengths with this lens. Color Rendition performance top. Towel in shade, 14 December 2014. ( Canon 7D Mk II at ISO 100, Canon EF 28-105mm USM II at 28mm, f/7.1 at 1/160.) bigger. The RF 24-105mm F4L IS USM is a professional-quality versatile zoom lens with a compact design – made possible by the new EOS R system lens mount – perfect for photographers and filmmakers shooting a range of subjects in various locations. Featuring fast and near-silent Nano USM focusing, this L-series zoom is built with a powerful 5-stop Thanks for the review. I really need to figure out my next move. I'm a big fan of the 24-70mm f/2.8L II that I own but never considered it a replacement for the 24-105mm f/4. For a lot of reasons I ended up with the 24-105/4L IS Mk 1, 24-70/2.8L II, and the 24-70/4L IS. When they anounced the new 24-105/4L IS II I sold both my f/4s. The RF 24-105mm f/4L IS USM is a professional standard zoom lens for Canon's new full-frame mirrorless camera system. Featuring a Nano Ultrasonic Motor for smooth, precise and quiet continuous auto-focusing, Fluorine coatings on the front and rear lens elements, 9 rounded diaphragm blades for smoother bokeh, a zoom lock switch to prevent lens creep, and image stabilisation offering a claimed 5 Unleash your inner photographer with this Canon digital camera kit. Its 30.3-megapixel full-frame CMOS sensor delivers high-resolution images in even low-light conditions, and the included 24-105mm lens lets you take wide-angle shots and portraits. This Canon digital camera kit records video in up to UHD 4K resolution to capture every detail. An advanced one-lens solution, the EF 24-105mm f/4L IS II USM is a Canon L-series zoom covering wide-angle to short-telephoto focal lengths and featuring a constant f/4 maximum aperture. The version II of this popular lens sports a redeveloped optical design, which includes four aspherical elements to significantly reduce distortion and At 24 mm the 24-105 mm lens is definitely better at the edges at f4 and f5.6. This finding is slightly surprising to me as f4 is the maximum aperture for the 24-105 mm lens, whereas the 24-70 mm is stopped down by one stop. By f8 the lenses are hard to tell apart. They are equally good at the centre. The 24-105 L delivers a sharper image at 50mm f/4, but at 70mm the 24-70 f/4L is back up to near equality with the 24-105 L. These two lenses perform more similarly at f/5.6 and at f/8 their results are nearly identical. The difference is negligible at f/11. The 24-70 has less distortion, especially at 24mm. S3CK.