Thanks everyone for taking up the offer and treating the matter in good spirit.
If I ever get to start off another of these challenges, I'll add that fact that "while we don't enforce the rules, we expect everyone to stick to them - it's an important part of the challenge that you limit yourself to your chosen gear for a month"; and then I'll add a couple of Barries thoughts (which, you'll find, I tried to express in my first post in the "Who's in" thread as well).
Now, as Barrie say, onwards and upwards:
I find the 75mm limitation both really challenging and very rewarding - the Summarit is very, very good and renders a great image, but I find framing with the 75mm frame lines tricky - though I think I'm getting there. The lens's bokeh is an incitement to use it wide open constantly - which means not doing the lens justice, but could be a theme. All three images I've posted so far were (coincidentally) shot wide open, so I could still make it work. I'll decide by the end of the week to further restrict my options.
The lens has one quirk that I find less than ideal: The aperture ring turns at the slightest touch; I often find myself with a much smaller aperture than I intended to use. It's a handling thing, I just have to slide my hand further back on the focusing ring, but the way I carry my camera, it can happen when I shift the grip for shooting.
Now that work load eases considerably (yesterday was the last big push), I'll be able to be more selective as well as more prolific in my shooting; I'll pick up speed during the next couple of days. I'm very much looking forward to that.
M.