About lensmount
lensmount is a cross-brand camera lens-mount and adapter compatibility reference. Every common DSLR ↔ mirrorless and rangefinder ↔ mirrorless adaptation path is mapped here, with flange focal distance, autofocus level, image stabilisation pass-through, aperture-control method, infinity-focus feasibility, and crop factor surfaced for each combination.
Why this site exists
The search-engine top ten for “[X mount] to [Y mount] adapter” is dominated by camera-manufacturer own-brand pages, commerce listings, and brand-by-brand blog posts. None of them ship a neutral, scannable matrix that answers the user's real question: “I have this body and these lenses — what's the best adapter and what do I lose?” lensmount fills that gap.
How the data is built
Each compatibility cell is computed from the two mounts' flange focal distances and electronic protocols. The feasibility rule is straightforward: a mechanical adapter needs at least 2 mm of flange clearance; a focal-reducer (Speed Booster) can correct up to ~12 mm of flange deficit; mirrorless lenses cannot be mounted onto DSLR bodies because the rear element collides with the mirror box. On top of the computed base, curated overrides layer in documented smart-adapter SKUs — Canon EF-EOS R, Nikon FTZ II, Sony LA-EA5, Sigma MC-11 / MC-21, Metabones, Viltrox, Fringer EF-FX and EF-GFX, Voigtländer M-mount, Techart LM-EA9, and others.
What we don't do
- No affiliate links. Adapter SKUs are named for reference. lensmount earns nothing from your purchase.
- No buy buttons. Verify availability and current pricing on the manufacturer or your retailer of choice.
- No vendor sponsorship.No adapter maker pays to influence what this site shows. If a vendor's SKU is omitted, it's because we couldn't verify the compatibility claim from public documentation — not because of a commercial relationship.
Contact
Spot an error, see a missing SKU, or want a mount added? Email corrections to hello@lensmount.hk2.ai. Include a public source we can cite (a manufacturer compatibility chart, a published teardown, or a reproducible AF test).