The Canon RF 16mm F2.8 STM Lens vs. Canon RF 15-35mm F2.8 L IS USM Lens comparison shows the prime lens to be dramatically smaller and lighter than the zoom. Correspondingly, the RF 16 uses smaller filters (43mm vs. 82mm) and has a higher maximum magnification (0.26x vs. 0.21x). The RF 15-35 has image stabilization, an AF/MF switch, separate Canon has announced the RF 10-20mm F4 L IS STM, a rectilinear ultra-wide zoom lens for RF-mount cameras. Despite the addition of image stabilization, the new lens comes in at half the weight of Canon's previous ultra-wide zoom, the EF 11-24mm F4 L USM. Is there anyone working and playing with the new Canon EF 24mm f/2.8 IS USM Wideangle prime lens, on a crop body like the 7D??? For what i have read it is a stunning lens. I have a 40stm pancake and a 70-200 f/4 and i feel this will be lens i am missing. hb5w.