I’m definitely comfortable recommending the Fuji X100 series cameras as a platform for modification by the guys at Kolari Vision.
Fujifilm DSLR and Mirrorless Full Spectrum Conversion Service – Kolari Vision
review: Fuji X100 camera - photo shoot with a model - Tangents
The Original Fuji X100 – Open Source Photography
Brightin Star 10mm F5.6 Fisheye Manual Focus Prime Lens for Fujifilm XF-Mount Mirrorless Cameras, APS-C Ultra-Wide Angle Fixed Lens, Fit for XT5, XT4, XT30, XPRO3/1, XT200, XS10, XA7, XE4, XH1(Silver) : Electronics
Brightin Star 10mm F5.6 Fisheye Manual Focus Prime Lens for Fujifilm XF-Mount Mirrorless Cameras, APS-C Ultra-Wide Angle Fixed Lens, Fit for XT5, XT4, XT30, XPRO3/1, XT200, XS10, XA7, XE4, XH1(Silver)
Fuji X100T UV/IR Full Spectrum
Fuji X100 - Kolari Vision Full Spectrum Modified - First Impressions - 35mmc
The Fuji X100 Digital Camera Real World Review by Steve Huff
Fujifilm X100 img_001 (720) – Kolari Vision
Fujifilm X100 Review - Paultography
Fujifilm DSLR and Mirrorless Full Spectrum Conversion Service – Kolari Vision