One never knows what the subject of a photo will be. Carry one lens and you’ll need another on the day. That’s life. Here’s what I’ve ended up with as a small “travel kit”. It’s enough to take out on a day to capture everything but wide angle shots (something seldom done unless travelling). Concerts? Covered, no matter the lighting conditions. Wildlife? Mostly. 300mm is fine if you creep close enough.

Panasonic G85 Body
Panasonic 20mm f/1.7 prime (pancake) lens. ~40mm equiv.
Panasonic 45-150mm f/4-5.6 zoom lens. ~90-300mm equiv.
Voigtlander Nokton 42.5mm f/0.95 prime. ~85mm equiv.

It’s not perfect. There’s large gap from the 20mm to 42.5mm, nothing wide and an overlap around the latter length. It can be fixed (and a ton of weight saved) by swapping the Voigtlander for a standard 12-60mm kit lens or the like.

But the Voigtlander is a party trick of sorts. Shove the camera on full manual and have away in almost any condition (in bright light a ND filter is often needed). Candlelight concert? Covered. It will shoot in very low lighting conditions. And the depth of field and compression can be excellent.

Though I’ll confess, I’m not yet worthy of this piece of kit, one keeps trying.

If just heading out with a body, the 20mm pancake lens stays on. So slim I can pop the camera into my laptop bag and forget about it. Zoom = Feet!