Micro Four Thirds
Ask: /ask/which-micro-four-thirds-camera-should-i-buy
One mount shared by OM System, Olympus and Panasonic: every lens fits every body, and lenses are small because the sensor is.
Its short flange takes almost any old manual lens through a cheap adapter, at twice the focal length in full-frame terms.
Cameras
OM System OM-3 Astro
OM System PEN
OM System OM-3
OM System OM-5 Mark II
OM System OM-1 Mark II
Panasonic Lumix G97
Panasonic Lumix GH7
Panasonic Lumix G100D
Panasonic Lumix G9 II
OM System OM-1
OM System OM-5
Panasonic Lumix GH6
Olympus PEN E-P7
Panasonic Lumix GH5 II
Olympus OM-D E-M1 Mark III
Olympus OM-D E-M10 Mark IV
Panasonic Lumix BGH1
Panasonic Lumix G100
Olympus OM-D E-M1X
Olympus OM-D E-M5 Mark III
Olympus PEN E-PL10
Panasonic Lumix G95
Olympus PEN E-PL9
Panasonic Lumix GH5S
Panasonic Lumix GX9
Olympus OM-D E-M10 Mark III
Panasonic Lumix G9
Panasonic Lumix GH5
Panasonic Lumix GX850
Olympus OM-D E-M1 Mark II
Olympus PEN E-PL8
Olympus PEN-F
Panasonic Lumix G85
Panasonic Lumix GX85
Olympus OM-D E-M10 Mark II
Olympus OM-D E-M5 Mark II
Panasonic Lumix G7
Panasonic Lumix GX8
Olympus OM-D E-M10
Olympus PEN E-PL7
Panasonic Lumix GH4
Panasonic Lumix GM5
Olympus OM-D E-M1
Olympus PEN E-P5
Panasonic Lumix GM1
Panasonic Lumix GX7
Olympus OM-D E-M5
Olympus PEN E-PL5
Olympus PEN E-PM2
Lenses
Laowa Aksen 17.5mm f/1.7 5-10X Ultra Macro APO
Laowa Aksen 45mm f/2.8 1-5X Ultra Macro APO
TTArtisan 50mm f/2
TTArtisan Tilt 50mm f/1.4
7Artisans 4mm f/2.8 Fisheyelike 6mm
7Artisans 6mm f/2like 9mm
7Artisans 7.5mm f/2.8 Fisheye IIlike 11mm
TTArtisan 7.5mm f/2 Fisheyelike 11mm
Laowa 9mm f/2.8 Zero-Dlike 14mm
7Artisans 10mm f/3.5like 15mm
TTArtisan 10mm f/2 ASPHlike 15mm
7Artisans 12mm f/2.8 IIlike 18mm
Sigma 16mm f/1.4 DC DN Contemporarylike 24mm
TTArtisan 17mm f/1.4like 26mm
7Artisans 18mm f/6.3 IIlike 27mm
Sigma 19mm f/2.8 DN Artlike 28mm
TTArtisan 23mm f/1.4like 34mm
7Artisans 25mm f/0.95like 38mm
7Artisans 25mm f/1.8like 38mm
TTArtisan 25mm f/2like 38mm
Sigma 30mm f/1.4 DC DN Contemporarylike 45mm
Sigma 30mm f/2.8 DN Artlike 45mm
7Artisans 35mm f/0.95like 52mm
7Artisans 35mm f/1.2 IIlike 52mm
7Artisans 35mm f/1.4like 52mm
TTArtisan 35mm f/1.4like 52mm
TTArtisan Tilt 35mm f/1.4like 52mm
TTArtisan 40mm f/2.8 Macrolike 60mm
7Artisans 50mm f/0.95like 75mm
7Artisans 50mm f/1.2like 75mm
7Artisans 50mm f/1.4 Tilt-Shiftlike 75mm
7Artisans 50mm f/1.8like 75mm
TTArtisan 50mm f/0.95like 75mm
TTArtisan 50mm f/1.2like 75mm
Sigma 56mm f/1.4 DC DN Contemporarylike 84mm
7Artisans 60mm f/2.8 Macro IIlike 90mm
Sigma 60mm f/2.8 DN Artlike 90mm
Olympus M.Zuiko 7-14mm f/2.8 PROlike 14-28mm
Panasonic Lumix G 7-14mm f/4like 14-28mm
Panasonic Leica DG 8-18mm f/2.8-4like 16-36mm
Olympus M.Zuiko 8-25mm f/4 PROlike 16-50mm
OM System M.Zuiko 9-18mm f/4-5.6 IIlike 18-36mm
Panasonic Leica DG 10-25mm f/1.7like 20-50mm
Panasonic Lumix G 12-32mm f/3.5-5.6like 24-64mm
Panasonic Leica DG 12-35mm f/2.8like 24-70mm
Panasonic Lumix G X 12-35mm f/2.8 IIlike 24-70mm
Yongnuo YN12-35mm f/2.8-4Mlike 24-70mm
OM System M.Zuiko 12-40mm f/2.8 PRO IIlike 24-80mm
Olympus M.Zuiko 12-45mm f/4 PROlike 24-90mm
Olympus M.Zuiko 12-50mm f/3.5-6.3 EZlike 24-100mm
Panasonic Leica DG 12-60mm f/2.8-4like 24-120mm
Panasonic Lumix G 12-60mm f/3.5-5.6like 24-120mm
Olympus M.Zuiko 12-100mm f/4 IS PROlike 24-200mm
Olympus M.Zuiko 12-200mm f/3.5-6.3like 24-400mm
OM System M.Zuiko 14-42mm f/3.5-5.6 IIIlike 28-84mm
Olympus M.Zuiko 14-42mm f/3.5-5.6 EZlike 28-84mm
Panasonic Lumix G 14-42mm f/3.5-5.6 IIlike 28-84mm
Panasonic Lumix G X PZ 14-42mm f/3.5-5.6like 28-84mm
Panasonic Lumix G 14-140mm f/3.5-5.6 IIlike 28-280mm
Olympus M.Zuiko 14-150mm f/4-5.6 IIlike 28-300mm
Tamron 14-150mm f/3.5-5.8 Di IIIlike 28-300mm
Panasonic Leica DG 25-50mm f/1.7like 50-100mm
Panasonic Lumix G 35-100mm f/4-5.6like 70-200mm
Panasonic Lumix G X 35-100mm f/2.8 IIlike 70-200mm
OM System M.Zuiko 40-150mm f/4 PROlike 80-300mm
Olympus M.Zuiko 40-150mm f/2.8 PROlike 80-300mm
Olympus M.Zuiko 40-150mm f/4-5.6 Rlike 80-300mm
Panasonic Lumix G 45-150mm f/4-5.6like 90-300mm
Panasonic Lumix G X PZ 45-175mm f/4-5.6like 90-350mm
Panasonic Lumix G 45-200mm f/4-5.6 IIlike 90-400mm
OM System M.Zuiko 50-200mm f/2.8 IS PROlike 100-400mm
Panasonic Leica DG 50-200mm f/2.8-4like 100-400mm
Olympus M.Zuiko 75-300mm f/4.8-6.7 IIlike 150-600mm
Panasonic Lumix G 100-300mm f/4-5.6 IIlike 200-600mm
OM System M.Zuiko 100-400mm f/5-6.3 IS IIlike 200-800mm
Panasonic Leica DG 100-400mm f/4-6.3 IIlike 200-800mm
Olympus M.Zuiko 150-400mm f/4.5 TC1.25x IS PROlike 300-800mm
OM System M.Zuiko 150-600mm f/5-6.3 ISlike 300-1200mm
Laowa 4mm f/2.8 Fisheye MFTlike 8mm
Laowa 6mm f/2 Zero-D MFTlike 12mm
Laowa 7.5mm f/2 MFTlike 15mm
Olympus M.Zuiko 8mm f/1.8 Fisheye PROlike 16mm
Panasonic Lumix G 8mm f/3.5 Fisheyelike 16mm
Olympus 9mm f/8 Fisheye Body Cap Lenslike 18mm
Panasonic Leica DG 9mm f/1.7like 18mm
Laowa 10mm f/2 Zero-D MFTlike 20mm
Voigtländer Nokton 10.5mm f/0.95 Asphericallike 21mm
Olympus M.Zuiko 12mm f/2like 24mm
Panasonic Leica DG 12mm f/1.4like 24mm
Panasonic Lumix G 14mm f/2.5 IIlike 28mm
Olympus 15mm f/8 Body Cap Lenslike 30mm
Panasonic Leica DG 15mm f/1.7like 30mm
Laowa 17mm f/1.8 MFTlike 34mm
Olympus M.Zuiko 17mm f/1.2 PROlike 34mm
Olympus M.Zuiko 17mm f/1.8like 34mm
Olympus M.Zuiko 17mm f/2.8like 34mm
Yongnuo YN17mm f/1.7Mlike 34mm
Voigtländer Nokton 17.5mm f/0.95 Asphericallike 35mm
Laowa Argus 18mm f/0.95 MFT APOlike 36mm
OM System M.Zuiko 20mm f/1.4 PROlike 40mm
Panasonic Lumix G 20mm f/1.7 IIlike 40mm
Laowa Argus 25mm f/0.95 MFT APOlike 50mm
Olympus M.Zuiko 25mm f/1.2 PROlike 50mm
Olympus M.Zuiko 25mm f/1.8like 50mm
Panasonic Leica DG 25mm f/1.4 IIlike 50mm
Panasonic Lumix G 25mm f/1.7like 50mm
Voigtländer Nokton 25mm f/0.95 Type IIlike 50mm
Yongnuo YN25mm f/1.7Mlike 50mm
Voigtländer Super Nokton 29mm f/0.8 Asphericallike 58mm
Olympus M.Zuiko 30mm f/3.5 Macrolike 60mm
Panasonic Lumix G 30mm f/2.8 Macrolike 60mm
Panasonic Leica DG 42.5mm f/1.2like 85mm
Panasonic Lumix G 42.5mm f/1.7like 85mm
Voigtländer Nokton 42.5mm f/0.95like 85mm
Yongnuo YN42.5mm f/1.7M IIlike 85mm
Olympus M.Zuiko 45mm f/1.2 PROlike 90mm
Olympus M.Zuiko 45mm f/1.8like 90mm
Panasonic Leica DG 45mm f/2.8 Macrolike 90mm
Laowa 50mm f/2.8 2X Ultra Macro APOlike 100mm
Olympus M.Zuiko 60mm f/2.8 Macrolike 120mm
Voigtländer Nokton 60mm f/0.95like 120mm
Olympus M.Zuiko 75mm f/1.8like 150mm
OM System M.Zuiko 90mm f/3.5 Macro IS PROlike 180mm
Panasonic Leica DG 200mm f/2.8like 400mm
Olympus M.Zuiko 300mm f/4 IS PROlike 600mm