Filter sizes
Lenses with a 43 mm filter thread
6 lens versions in our catalogue have a 43 mm filter thread, across 2 mounts. One set of 43 mm filters fits all of them.
Canon RF 2
- Canon RF16mm F2.8 STM26 mm equiv. · f/2.8 · 165 g
- Canon RF50mm F1.8 STM80 mm equiv. · f/1.8 · 160 g
Fujifilm X 4
- Fujifilm XF23mmF2 R WR35 mm equiv. · f/2 · 180 g
- Fujifilm XF30mmF2.8 R LM WR Macro45 mm equiv. · f/2.8 · 195 g
- Fujifilm XF35mmF2 R WR53 mm equiv. · f/2 · 170 g
- Fujifilm XC35mmF253 mm equiv. · f/2 · 130 g
Step-up rings
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To use 43 mm-thread lenses with larger filters you already own, a step-up ring screws into the lens and takes the larger filter: 43–46 mm, 43–49 mm, 43–52 mm. 43–46 mm ring 43–49 mm ring 43–52 mm ring
Filters smaller than 43 mm (39 mm, 40.5 mm) need a step-down ring, which darkens the corners on most lenses; we do not suggest it. Smaller-thread lenses can use 43 mm filters through a step-up ring: 39 mm lenses, 40.5 mm lenses.
Plan one filter size for your kit · Every filter size
Facts checked 9 Oct 2026 against the makers' specification pages. How we check
Questions
Which lenses take 43 mm filters?
6 lens versions in our catalogue: Canon RF16mm F2.8 STM, Canon RF50mm F1.8 STM, Fujifilm XF23mmF2 R WR, Fujifilm XF30mmF2.8 R LM WR Macro, Fujifilm XF35mmF2 R WR, Fujifilm XC35mmF2.
Can I use a 43 mm filter on a lens with a smaller thread?
Yes, through a step-up ring from the lens's thread to 43 mm. The lens hood usually no longer fits with the ring on.