Viltrox EF-FX2 Affordable Canon EF Focal Reducer With Auto Focus

Viltrox released an updated version of their EF-FX1 that has a focal reducer in it as the Viltrox EF-FX2. It’s available at Amazon and B&H Phot0, but like all AF adapters, it will likely take some tweaking in the coming months via firmware update. You can purchase the Viltrox EF-FX2 at Amazon and B&H Photo.

Press release, specs, and demos below

EF-FX2 adapter ring can transfer Canon EF series lens to Fuji X micro single body

Product Description
Only the EF-FX2 adapter ring can perfectly transfer the Canon EF series lens to the Fuji X micro single body. The focal length is in the originalMultiply by 0.71 (equivalent focal length = actual focal length × 0.71), the aperture is increased by 1 level, and 4 sets of 4 optical lenses are built in.EXIF signal transmission, auto focus, adjustable aperture and other functions can be realized at the same time of transfer, and the firmware can be upgraded through the USB interface.

* With auto focus function; * Reduce the imaging focal length. The actual focal length after using EF-E is 0.71 times of the original focal length. * The aperture can be accurately moved through the adapter ring to perform the corresponding action; * Galvanized alloy technology, stable and reliable; * The signal transmission adopts gold-plated PIN pin, which greatly improves its conduction performance; * The bottom of the adapter ring is equipped with a 1/4 screw port for easy mounting on a tripod or other mounting bracket;

Product parameters
Product number EF-FX2 adapter ring Compatible lens Canon EF bayonet lens Compatible camera Fuji X micro single camera Focus mode auto focus Focal length coefficient 0.71x Optical lenses 4 groups of 4 pieces Firmware upgrade USB upgrade interface Tripod slot CU 1/4″ x 1 (detachable) Maximum diameter and length 68mm × 27mm weight About 145 grams (without cover) The front cover Camera cover Back cover Lens cover

  • With auto focusing function;
  • Can increase the lens 3 f-stop, increasing the amount of light into the virtual background, can better highlight the theme;
  • Reduced imaging focal length, the actual focal length after using EF-FX2 for 0.71 times the focal length.
  • Zinc alloy technology, stable and reliable;
  • Signal transmission using PIN gold needle, greatly enhance its transmission performance;
  • Ring at the bottom with 1/4 screws, which can easy installed on the tripod or other fixed bracket;


  Model   EF-FX2 adapter mount
  Compatible lenses   Canon EF series lenses
  Compatible cameras   Fuji X-mount mirrorless
  Focus mode   Auto focus
  Focal Lenth Multiplier   0.71x
  Optical  glasses   4 groups, 4 glasses
  Firmware upgrade   USB upgrade port
  Tripod Socket   Cu1/4″× 1
  Diameter and Length   68mm×27mm
  Weight   Approx. 145 g (excluding cap)
  Front cap   Camera cover
  Rear cap   Lens Dust cap

No.   Compatible Lenses (Canon Zoom) No.    Compatible Lenses (Canon Prime Lenses) 
1   Canon EF 11-24mm F4.0L USM 26   Canon EF 14mm f/2.8 L
2   Canon EF 16-35mm f2.8L II 27   Canon EF 24mm f1.4L II USM
3   Canon EF 16-35mm f2.8 L III USM 28   Canon EF 24mm f2.8
4   Canon EF 16-35mm f4.0 L IS USM 29   Canon EF 24mm f1.4L
5   Canon EF 17-40mm f4 30   Canon EF 28mm f1.8
6   Canon EF 20-35mm f2.8 L 31   Canon EF 35mm f1.4L
7   Canon EF 20-35mm f3.5-4.5 USM* 32   Canon EF 35mm f2.0L
8   Canon EF 24-70mm f4L IS USM 33   Canon EF 40mm f2.8 STM
9   Canon EF 24-70mm f2.8L II USM 34   Canon EF 50mm f1.8 II
10   Canon EF 24-105mm f4L IS 35   Canon EF 50mm f1.4 USM
11   Canon EF 24-85mm f3.5-4.5 USM* 36   Canon EF 50mm f1.2L USM
12   Canon EF 24-105mm f3.5-4.5* 37   Canon EF 50mm f2.5
13   Canon EF 28-80mm f3.5-5.6 II* 38   Canon EF 50mm f1.8 STM
14   Canon EF 28-135mm f3.5-5.6 IS * 39   Canon EF-S 60mm f2.8 USM
15   Canon EF 70-200mm f2.8L IS II USM 40   Canon EF 85mm f1.8 USM
16   Canon EF 70-200mm f4L 41   Canon EF 85mm f1.2L II USM
17   Canon EF 70-300mm f4-5.6 IS USM* 42   Canon EF 100mm f/2.0
18   Canon EF 70-300mm f4.5-5.6 DO IS USM* 43   Canon EF 100mm f/2.8 Macro 
19   Canon EF 70-200mm f4L IS USM 44   Canon EF 135mm f/2.0L
20   Canon EF 70-300mm f4-5.6L IS USM* 45   Canon EF 180mm f/3.5 L
21   Canon EF-S 10-22mm f3.5-4.5 USM* 46   Canon MACRO EF 180mm f/3.5L
22   Canon EF-S 15-85mm f3.5-5.6 IS USM* 47   Canon EF 200mm f2.8L
23   Canon EF-S 18-200mm f3.5-5.6 IS* 48   Canon EF 300mm f4L IS
24   Canon EF-S 18-55mm f3.5-5.6 IS STM* 49   Canon EF 400mm f4.0 DO IS USM
25   Canon EF-S 18-135mm f3.5-5.6 IS STM* 50   Canon EF 400mm f5.6L
51   Canon EF 500mm f4L IS USM
 No.    Compatible Lenses ( Tamron )  No.    Compatible Lenses ( SIGMA )
52   TAMRON SP 15-30mm f2.8Di USD 65   SIGMA  10-20mm f3.5  DC HSM 
53   TAMRON AF 17-50mm f2.8 Di-II LD  66   SIGMA  10-20mm f4-5.6 HSM *
54   TAMRON 18-270MM F3.5-6.3 * 67  SIGMA  18-35mm f1.8  DC 
55   TAMRON SP24-70mm f2.8 Di- VC USD G2 68   SIGMA  24-35mm f2 DG
56   TAMRON SP24-70mm f2.8 Di- USD A007 69   SIGMA  24-70mm f2.8 DG
57   TAMRON SP28-75mm f2.8 MACRO 70   SIGMA  50-150mm f2.8 APO DC HSM
58   TAMRON  28-300mm f3.5-6.3 Di VC PZD* 71   SIGMA  70-300mm f4-5.6 DG*
59   TAMRON SP 70-300mm f4-5.6 Di VC * 72   SIGMA  120-300mm f2.8 DG
60   TAMRON SP100-400mm f4-6.3 Di VC USD* 73   SIGMA  24mm f1.4 DG
61   TAMRON 150-600mm f5-6.3* 74   SIGMA  35mm f1.4 DG
62   TAMRON 45mm f1.8  DI VC USD 75   SIGMA  85mm f1.4 DG
63   TAMRON SP 85mm f1.8 Di VC USD
No.    Compatible Lenses ( YN )
76   YN EF 50mm f1.8
77   YN EF 14mm f2.8
78   YN EF 35mm f2.0
79   YN EF 100mm f2.0
80   YN EF 50mm f1.4
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