I also think there is a self-fulfilling action occurring, where manufacturers are aware the majority of their customers are male and then target advertisements, brochures, products, etc. toward men - this then leads to the implication that these products are for men and alienates women who might be interested, as it is seen as a "guy-thing". Thus, if all dslr's advertisements show men operating them and women operating smaller P&S's, the implication is that men should use dslr's and women should use P&S's. I remember trying to sell a dslr camera to a woman with delicate hands and should could not hold it and push the buttons - exact opposite to my large hands, I physically cannot operate a lot of P&S's because my fingers are too large to push only one button at a time. Look at any camera brochure, either men are using the dslr's or if a woman is, she is using a consumer model and is shooting either children or flowers while the men are using the pro models and are shooting sports or portraits.
This is most noticeable in children's toys, where who is seen playing with the toy influences other children into believing that's who should be playing with it. However, many studies have shown that if you show children the same made-up job and men are doing it, more children believe women can't do it than if you show a woman doing it, they still believe men could do it but shouldn't. I actually see a lot of Foucault's power narrative at play in photography, both who does it and how they do it.