Lenses optimized for visible light often exhibit low-contrast and central hotspots at smaller apertures in the infrared. The anti-reflective glass coatings and matte black finishes that work well in normal photography may be reflective at longer wavelenghs. I've attempted to collect all extant information on native m4/3 lens infrared performance from a prior list by camera conversion service Kolari Vision, a comprehensive internet search, and tests with my own lenses. While no lens offers perfect infrared performance, better performing lenses offer decent contrast and the near absence of central hotspots at larger apertures. My criterion in this list (where information is available), is good performance at f/8 and below. Good Performers Olympus 12mm f/2 Olympus 60mm f/2.8 Macro (hotspot @ f/9) Olympus 9-18mm f/4-5.6 Olympus 14-42mm f/3.5-5.6 ED Olympus 14-42mm f/3.5-5.6 II R Olympus 40-150mm f/4-5.6 Panasonic 8 mm f/3.5 (hotspot @ f/10) Panasonic 14 mm f/2.5 Panasonic Leica 45mm f/2.8 Macro Panasonic 7-14mm f/4 (hotspot @ f/9) Panasonic 14-42mm f/3.5-5.6 Panasonic 14-45mm f/3.5-5.6 Panasonic X 45-175mm f/4-5.6 Poor Performers Olympus 12-50mm f/3.5-6.3 Olympus 17mm f/2.8 Olympus 45mm f/1.8 Olympus 75mm f/1.8 (low contrast & hotspot @ f/4.5) Panasonic 14-140mm f/4-5.8 (hotspots from 14-25mm) Panasonic 45-200mm f/4-5.6 (low contrast) Panasonic Leica 25mm f/1.4 (hotspot @ f/5) SLR Magic Hyper Prime 12mm f/1.6 Voigtlander 25mm f/0.95 Mixed reviews (please let me know if you have these) Olympus 45mm f/1.8 (one report of hotspot @ f/9) Panasonic 12-35mm f/2.8 For my own tests, I used a full-spectrum GX1 with 850nm (Wratten 87C, B+W 093, Schott RG850) and 790nm (Wratten 87, Lee 87) long-pass filters, taking multiple exposures at all apertures of blue sky (> 90° from the sun's direction) framed by light colored clouds or leaves. Loss of contrast and hotspots show very strongly in these conditions at wavelenghs above 800nm. *** currently editing a mosaic showing how hotspots vary with aperture for inclusion here *** If anyone has used other native m4/3 lenses with infrared filters, or on infrared/full spectrum converted cameras, I'd like to add your report in order to make this listing as comprehensive as possible.