The 24-70mm F2.8 L, 24-105mm F4 L, and 28-70mm F2 L cover the range. Each has its strengths—the 28-70mm F2 opens to a wider aperture than most other zooms (though it is a bit bulky). Compare Canon EF 24-105mm f 4L IS II USM Lens vs Canon EF 24-105mm f 3.5-5.6 IS STM Lens vs Canon EF 24-70mm f 4L IS USM Lens vs Canon EF 24-105mm f 4L IS USM Lens White Box Press ‎ ↵ Enter ‎ for Accessibility for blind people who use screen readers The Rokinon 14mm f/2.8 IF ED UMC Lens has a 1 stop faster aperture than either the 24-70 or 24-105. The time a shutter is open effects how much star trails are going to be introduced. The faster the lens is the shorter time it ias to be open for exposure. Tim Campbell can explain this more better than I. The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes. Has a metal mount. Sony E PZ 18-105 mm F4 G OSS. Sony FE 24-70mm F2.8 GM. A metal mount is generally superior to a plastic mount as it is more durable. weight. has a silent focus motor built into the lens. Canon EF 24-70mm F/4L IS USM. Canon EF-S 18-135mm f/3.5-5.6 IS USM. Lenses with built-in focus motor focus faster and more quietly than lenses without a focus motor which rely on the camera's body focus motor. minimum focus distance. IVa6a.