My first thing I will mention on the new camera is the size difference. I have been shooting the smaller cameras for about 7 years so this X-T3 seems BIG. In comparison the X-T3 is about 5.5 ounces heavier than the X-T10 (30%), yet it is 13.5 ounces (40%) lighter than my Nikon D300. I’ll also mention that the XF16-80 f4.0 lens is much bigger than the XF18-55mm f2.0-4.0, weighing about 30% heavier. After saying that I must say the camera and lens fit nicely in my hands and comfortably. Oh, and the manual is twice as big!! Study time.