![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
The quick and dirty solution was to buy a clip-on macro lens set for my smartphone, which sounds like an appalling idea until you try it. (I gather that a fair bit of Attenborough-level close-up stuff is shot using iPhone lenses these days.) So what the hell, it was down to Mr Amazon for one of these things: https://www.amazon.co.uk/dp/B00CSJ50HY/. And stuffing heck, it's really rather good for a tenner. Cased in proper aluminium, not plastic, and it does wide angle and fisheye if you juggle the two lenses. Fits any mobile where the centre of the lens is no more than 30mm from the edge. So not a Microsoft Lumia or certain Huaweis, then.
You can, of course, spend £200 on a macro lens set for a mobile, and I expect its depth of field would be better, but I'd have one of these in my christmas stocking any day. Well, I would if I hadn't just bought one.
![Wink ;)](./images/smilies/icon_e_wink.gif)
BJ