Originally posted by GUB I gained a creative boost when I changed camera instead of lens. I bought a Pentax Q and experimented with legacy lens on it. There was no way you could get as sharp an image from these lenses as from FF or apsc (In practise their resolution was essentially quartered) so you had to concentrate on other qualities.
Using the Q7 and a cheap Chinese CCTV lens for a forum challenge was a turning point for me, for much the same reasons you mention. Resolution and aberrations were dreadful, plus the focal length wasn't what I would typically shoot at (it was a 35mm lens, so on the Q7, equivalent to 165mm on 35mm full frame) and due to adverse weather I was forced to shoot indoors most of the time. After a few days I found myself taking photos I would never have previously attempted or even thought of. A couple of them are actually among my favourite photos I've taken. So, for me, working within the limitations of a particular lens and camera forced me to look for and at things differently.