Mornnb wrote in post #16170703
True but I don't agree with your percentages, the lens helps the presentation,in terms of bokeh quality, sharpness, colour, contrast etc. The lens is probably around 10%.
Sharpness is a factor of technique (including diet, trigger control, breathing, bracing, etc) a lot more than it is glass. Color and contrast are a factor of light, not the lens. Flat light = flat contrast. Strong light = strong contrast. Might you require a shallow depth of field for a certain shot? Sure. But in the grand scheme of things, the most important two aspects of ANY photograph are who/what the subject is, and how that subject is lit.
Follow some really good photographers work and listen to what they tell you about the photo ... they tell you how it was lit and how the model was posed/instructed. They rarely, if ever, talk about the body or lens that was used as that factor is often completely irrelevant.