How I fixed my lens’s focus with kitchen foil and a pair of scissors

Shimming a lens adapter
My Voigtländer 35mm f/2.5 Color Skopar works brilliantly on my A7 II via an adaptor – or it would if the infinity index on the lens actually corresponded to infinity. (Image credit: Rod Lawton)

Much as I love lenses with focus distance scales, you can’t always trust them. On modern autofocus lenses it doesn’t matter so much because really they’re designed for autofocus anyway and, if you do use MF, you’ll probably use the viewfinder or live view to focus. There’s such a short focus throw on today’s lenses that any distance scales, even if they exist, are just approximations. Typically, you might get a few marked distances up to 3m, say, but between that and infinity you’re on your own.

Does it matter? Well it does if you’re like me and prefer a hard end stop at infinity so that you can focus distant subjects by touch.

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Rod Lawton

Rod is an independent photography journalist and editor, and a long-standing Digital Camera World contributor, having previously worked as DCW's Group Reviews editor. Before that he has been technique editor on N-Photo, Head of Testing for the photography division and Camera Channel editor on TechRadar, as well as contributing to many other publications. He has been writing about photography technique, photo editing and digital cameras since they first appeared, and before that began his career writing about film photography. He has used and reviewed practically every interchangeable lens camera launched in the past 20 years, from entry-level DSLRs to medium format cameras, together with lenses, tripods, gimbals, light meters, camera bags and more. Rod has his own camera gear blog at but also writes about photo-editing applications and techniques at