Total weight. When you are looking at a combination of a camera and a lens you must always consider the total weight. Each product weighs in at: Canon EOS 80D. 730 gram. Canon EF 24-105mm F4 L IS USM. 670 gram. Together they have a total weight of 1400 gram (equal to 3,09 lb). I agree with @Waddizzle. If your moving to Full Frame this would be a better choice compared to the EF-S 18-135mm. You'll be able to use the Full image circle of the lens compared to being restricted by the APS-C image circle of the 18-135mm lens. When being used on a Full Frame R Series camera. Whe .

canon ef 24 105mm f 4l is usm weight