These evolved after Provence. Although I do sometimes paint small e.g. “fields at Itteringham” and “Cows by a dyke”, its usually in the studio with about 6 paintings on the go at the same time. The great advantage of “small” outside is that it can be done in one hit “alla Prima” outside. Weather dependent in the Uk of course. And you are getting colours directly from the subject and, Being small, you have a better chance of finishing it before the light changes too much.