The GR IV with Ricoh's Highlight Diffusion Filter built in: switch it on and bright highlights bloom softly, for a mellow, film-like glow without screwing a diffusion filter onto the lens. The trade is the standard model's 2-stop ND filter, which the HDF version drops. Everything else matches the GR IV: 25.7MP APS-C sensor, 28mm-equivalent f/2.8 lens, phase-detect AF, 6-stop IBIS and a 262g pocketable body with no built-in viewfinder.
Select up to 2 cameras to compare against the Ricoh GR IV HDF. It's always pinned as the baseline.
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