Mike discovers a tiny Cold War spy camera that can be worn on the wrist. The Tessina 35 was the smallest 35mm camera ever made and a fine example has come in from the cold at London's Portobello Road market. Read how to spend £500.

Earlier this week I was strolling around Bushey Park in south-west London when I had my greatest photographic disaster of the year. I found a mob of deer. One obliging stag was washing his antlers in a rather unsavoury, muddy and smelly pool. Just the job, I thought, and fished out the camera of the day, the Leica X1 as it happened, from my Billingham

A new 12in iPad, an Apple keyboard and even a pencil: My first reaction is why would I want one of these combinations. Since I got the 12in MacBook the iPad Air 2 has been gathering dust. For me, the advantages of OS X, with its multi-tasking capabilities, in such a compact and light package far outweigh any attractions of the iPad. 

This evening I faced a dilemma. One half of me wanted to go to the London Mac Users' Group to watch the Apple presentation in the company of like-minded anoraks. The other was sorely tempted by an invitation to celebrate The Queen's longest-reign-in-British-history record at a rather superior dinner in the gloriously faded surroundings of the National Liberal Club in Whitehall.