Wide conversion kit (PR-10)

0.78x wide lens plus NiSi's locking adapter for your body in one box, for well under half the Ricoh lens alone: 28mm to about 21mm on the GR III and GR IV, 40mm to about 31mm on the IIIx.

NiSi's answer to the GW-4, and the value play in this category: the lens and the locking adapter for your body come together for well under half what the Ricoh lens alone costs, so there is nothing else to buy. Three kits, one per body: the GR III kit (PR-11 adapter) and the GR IV kit (PR-8 adapter) take 28mm to about 21mm; the GR IIIx kit (PR-12 adapter) takes 40mm to about 31mm. The adapters lock mechanically, which matters here - the recurring complaint about NiSi's older friction-fit adapters was them working loose, and this is the design that fixes it. Newer than the Ricoh option, so there is less long-term owner reporting behind it. The GR IV kit is also, for now, the only way to buy NiSi's PR-8 adapter on Amazon.

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