Third Party Speedlites For Canon EOS: Sigma Electronic Flashes - Canon EOS Technoclopedia

Hot Shoe Speedlites
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Zoom1 (mm) Zoom Type Guide No.1 (m) Auto Metering2 Fill Flash AF Beam (m) Manual Features3 HSS4 RPT (Hz) Flash Duration (s) Reload5 (s)
Standard | Rapid Fire
Head Movement (°)
vert. | horiz.
Master6 Slave6 Groups/Ch. Ratio Trigger Input Size (mm) Weight (g) Powered by Production Comments Tests/Reviews
Sigma EF-430 ST EO     (18*) 28 - 80 motorized (21) 30 - 43 TTL no yes 2CS, M (≥1/16), FEC (±2); Z No 1 - 10 1/30000 - 1/100 ≤4/6   0 - 90   no no (S1/S2 ?)       115.5 x 107 x 75.5 280 4x AA 1997 *the wide panel is optional; with EOS 700, 750 and 850 only full TTL auto mode is available (no manual, Tv, Av etc.)  
Sigma EF-500 ST EO       (17) 28 - 105 motorized (20) 30 - 50 TTL no yes M (≥1/16) No   1/700 ≤4/6   yes yes no no       139 x 117 x 77 320 4x AA 2001    
Sigma EF-500 DG ST EO-ETTL     (17) 28 - 105 motorized (20) 30 - 50 E-TTL no 0.7 - 9 M (≥1/16) No   1/700 ≤4/6   -7 - 90 -180 - 90 no no       139 x 117 x 77 320 4x AA 2002 incompatibilities with EOS 50D (and 5D Mk II?) - no update available; the "DG" in the model's name foresides of the flash is printed in white letters like the rest  
Sigma EF-500 DG ST EO-ETTLII [F15]   (17) 28 - 105 motorized (20) 30 - 50 E-TTL no yes   No   1/700 ≤4/6   yes yes no no       139 x 117 x 77 320 4x AA   incompatibilities with EOS 50D reported by Sigma Service (also with EOS 5D Mk II?), update available; the "DG" in the model's name foresides of the flash is printed in gold letters, the rest in white  
Sigma EF-530 DG ST EO-ETTLII [529/F16] (17) 24 - 105 motorized (20) 28 - 53 E-TTL no 0.7 - 9 M (≥1/16) No   1/700 ≤4/6   -7 - 90 -180 - 90 no no       139 x 117 x 77 305 4x AA 2007 incompatibilities of the series up to SN 1045700 with EOS 50D reported by Sigma Service, update available  
Sigma EF-610 DG ST EO-ETTLII [743/F19] (17) 24 - 105 motorized (23) 34 - 61 E-TTL no 0.7 - 9 M (≥1/16) No     ≤4/6   -7 - 90 -180 - 90 no no       139 x 117 x 77 320 4x AA 2010 with EOS 700, 750 and 850 only full TTL auto mode is available (no manual, Tv, Av etc.)  
Sigma EF-430 Super EO       (18) 28 - 80 motorized (21) 30 - 43 E-TTL no yes                 no S1/S2           4x AA      
Sigma EF-500 Super EO [F08]     (17) 28 - 105 motorized () - 50 TTL no 0.7 - 9 M (≥1/64) yes 1 - 100 1/700 ≤4/6   -7 - 90 -180 - 90 yes* S1/S2*/**       139 x 117 x 77 335 4x AA 2001 *this is taken from the Minolta version: there is no real remote TTL or master flash feature, instead you put the flash on the camera for measurements, then unmount it to put it into position and remote release it by the
built-in camera flash or another Speedlite mounted to the camera - there is no real remote TTL or whatsoever; **compatible with EF-430 ST/Super as slaves only (?)
 
Sigma EF-500 DG Super EO-ETTL [F10]     (17) 28 - 105 motorized (20) 30 - 50 E-TTL no 0.7 - 9 2CS, M (≥1/128), FEC (±3), Z yes 1 - 199 1/700 ≤4/6   -7 - 90 -180 - 90 yes yes 3grp, 4ch     139 x 117 x 77 335 4x AA 2002 incompatibilities with EOS 50D (and 5D Mk II?) - no update available  
Sigma EF-500 DG Super EO-ETTLII [F14]     (17) 28 - 105 motorized (20) 30 - 50 E-TTL no (Center AF) 2CS, M (≥1/128), FEC, Z yes         yes yes yes yes       139 x 117 x 77 335 4x AA   incompatibilities with EOS 50D reported by Sigma Service (also with EOS 5D Mk II?), update available Photonotes EF-500 DGS vs. SL 550EX
Sigma EF-530 DG Super EO-ETTLII [525/F17] (17) 24 - 105 motorized (20) 28 - 53 E-TTL no 0.7 - 9 2CS, M (≥1/128), FEC (±3), Z yes 1 - 199 1/700 ≤4/6   -7 - 90 -180 - 90 yes yes 3grp, 4ch     139 x 117 x 77 335 4x AA 2007 incompatibilities of the series up to SN 1047200 with EOS 50D reported by Sigma Service, update available  
Sigma EF-610 DG Super EO-ETTLII [738/F18] (17) 24 - 105 motorized (23) 34 - 61 E-TTL no 0.7 - 9 2CS, M (≥1/128), FEC (±3), Z yes 1 - 199 1/700 ≤4/6   -7 - 90 -180 - 90 yes yes 3grp, 4ch     139 x 117 x 77 330 4x AA 2010 features wireless TTL and modeling flash  
Sigma EF-630 EO-ETTLII [932/F50]     (17) 24 - 200 motorized (21) 29.5 - 63 E-TTL no 0.7 - 10 2CS, M (≥1/128), FEC, Z yes       yes -7 - 90 -180 - 180 yes yes       148.4 x 121.5 x 79.4 490 4x AA 2017 features wireless TTL and modeling flash  

Ring Flashes
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Zoom (mm) Zoom Type Guide No. (m) Auto Metering2 Fill Flash AF Beam (m) Manual Features3 HSS4 RPT (Hz) Flash Duration (s) Reload5 (s)
Standard | Rapid Fire
Head Movement (°)
vert. | horiz.
Master6 Slave6 Groups/Ch. Ratio Trigger Input Size (mm) Weight (g) Powered by Production Comments Tests/Reviews
Sigma EM-140 DG EO [F30] 80° none 14 E-TTL no yes (20sec) 2CS, M (≥1/64), FEC (±3) yes 1 - 199   ≤4/6   -/- -/- yes no 2grp+all, 4ch supported   see comments 430 4x AA 2005 incompatibilities up to SN 2054400 with EOS 50D reported by Sigma Service, update available; size of control unit: 136 x 83 x 77, size of flash ring: 129 x 127 x 31; compatible with filter sizes 55 - 62, 72 & 77  

Accessories
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Function/Details Weight (g) Powered by Production Comments Tests/Reviews
Sigma Flash USB Dock       unit was first mentioned in the EF-630's announcement - is used like the existing USB Dock for lenses to update firmware via Sigma Optimization Pro; the dock will be sold separately; no further information available     ann. in 2016    

General Notes:
1.) Sigma's Remote capable flashes are compatible with Canon's classic wireless TTL system (sometimes reported buggy though).
2.) Also see pending entries. Additions are welcome.
 
Online Resources:
 
Catalogs & Manuals
 
Sigma Global (lenses only)
Sigma Photo USA (lenses only)
 
 
Discontinued Lenses (via archive.org)
Press Releases