It is not a simple plug/play effort
I have a Panasonic 20mm 1.7 that I was going to use for astro stuff and general wide angles
Not only that, but its large enough for cards, banknotes in multiple currencies, and has a nice security feature where you can store bills behind a hidden flap
For us, this design offers a just-right balance of simplicity and features: The two zippered side pockets are a great substitute for a bulky lid, the carrying system is minimalist yet comfortable, and the external attachment points get the job done (for skis, ice tools, and crampons) without feeling overly obtrusive when not in use
Osprey Nebula 32 Backpack Our test results: Fits most water bottles 40 ounces and under , including Owala, YETI, Hydro Flask, and Nalgene bottles