The Canon RF 1.4x or 2.0x teleconverters are not compatible with the RF 70-200mm F4L lens, or indeed the F2.8 version. They are currently only compatible with the RF 100-500mm f/4.5-7.1L IS USM (can only be used within 300-500mm range), the RF 600mm f/11 IS STM and the RF 800mm f/11 IS STM lenses. Focal Range Previously an 85mm f1.2 lens, 70-200mm f2.8, 24-70mm f2.8, etc., these lenses cost less than a Canon 5D, Nikon 850, etc. camera. Today, these lenses are equal to or more expensive than the camera itself. I have an R6II and an RF 85mm f1.2 or RF 70-200mm f2.8 cost the same or more. It was normal, in the past, for a camera body to cost more than Compare Canon RF 70-200mm f 2.8 L IS USM Lens vs Canon RF 100-500mm f 4.5-7.1 L IS USM Lens vs Sigma 70-200mm f 2.8 DG OS HSM Sports Lens for Sigma SA vs Canon RF 100mm f 2.8 L Macro IS USM Lens Panasonic S1 Panasonic Lumix DC-S1R Canon RF 50mm F1.2L USM Panasonic S Pro 70-200mm F4 OIS Canon RF 24-70mm F2.8L IS USM +3 more Reply Reply with quote Reply to thread Complain But with fewer elements in the construction, Sony’s significantly reduced the weight from just under 1.5kg to just over 1kg, saving almost a third. Indeed it even shaves 25g from the weight of the Canon RF 70-200 2.8 to become the lightest of its peer group. Tamron’s 70-180 2.8 is 225g lighter still, but has a shorter range. 12-26-2019 11:05 AM. "The EF 70-200 f/2.8 or the RF 50mm f/1.2 ". I have both for DSLR cameras. So, this is based on that fact. The choice isn't even a debatable, the Canon EF 70-200mm f/2.8L IS III USM Lens as a first lens. It is by far more friendly and will be tons more useful. Not simply portraits. Sony FE 24-70 GM f2.8 $1998 Sony FE 70-200 GM f2.8 $2398. That totals: $8,092. That [edit] is 5972 Pounds Sterling.. and the Nikons, at least the 70-200, are optically superior if not by a huge margin. Cheap glass will come to Z mount, and in the meantime their f4 zooms are also excellent. Sony E. weather-sealed (splashproof) Canon EF 70-200mm F/2.8L USM. Sony FE 70-200mm F2.8 GM OSS. The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes. Has a metal mount. Canon EF 70-200mm F/2.8L USM. Sony FE 70-200mm F2.8 GM OSS. However I do seriously recommend going for the f2.8 IS ii or iii as you gain a considerable amount of flare control which I find to be important for gigs. Also, image stabilisation is handy in poor light. I have the 70-200 f2.8 IS iii. If I could only have one body and one lens, the 70-200 would be the one. Canon RF 100-500mm F4.5-7.1L IS USM Review Sony FE 200-600mm F5.6-6.3 G OSS Review Tamron SP 70-200mm f/2.8 Di VC USD Review zg3H.