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VIP
Posts: 11,711
Registered: ‎08-13-2015

Re: Canon mount dapter eos ef R vignettes


@ebiggs1 wrote:
I believe the DC name is Sigma’s note for crop sensor cameras. DN is for mirrorless.
I can’t remember mounting a DC on my FF body so I don’t know if it will.

Canon uses a red dot for EF lens mounts, and a white square for EF-S lens mounts.  Sigma uses neither.  Sigma uses a white dot that aligns with Canon's red dot on a camera body.  All of their lenses are made this way.

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"Doctor told me to get out and walk, so I bought a Canon."
VIP
Posts: 11,711
Registered: ‎08-13-2015

Re: Canon mount dapter eos ef R vignettes

[ Edited ]

Sigma 18-200mm.  Notice the white dot, which aligns with the Canon red dot.

 

CB851422-0FDD-45F4-8D96-EFCF18742435.jpeg

 

Why spend the extra money to make two diffferent mounts, when using just one gets the job done?

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"Doctor told me to get out and walk, so I bought a Canon."
Forum Elite
Posts: 14,025
Registered: ‎12-07-2012

Re: Canon mount dapter eos ef R vignettes

"Why spend the extra money to make two diffferent mounts, when using just one gets the job done?"

 

Perhaps so, however, Sigma does indicate which camera model their lenses are designed for. DG is for full frame while DC is for the cropper series. DN is their new designation for mirrorless. Example my 120-300mm F2.8 DG OS HSM Sport is designed as a FF lens. Indicated by the "DG" in its name. Although it will mount on a cropper and perform flawlessly.

 

I have not, or at least I can't ever remember doing so, mounted a DC lens on any of my FF cameras. I would hope that people would realize it is not the best idea and specifically why Sigma makes the name different for each line. I actually don't ever think I have owned any EF-S/DC lenses at all.  I have used a very few but I don't remember owning any. They are just not built well enough to satisfy my requirements.

EB
EOS 1DX and 1D Mk IV and several lenses!
VIP
Posts: 8,034
Registered: ‎11-13-2012

Re: Canon mount dapter eos ef R vignettes

Only Canon lenses have an EF-S mount. All third party lenses use the EF mount, but if they are designed for the APS-C bodies they will usually vignette at the wider focal lengths. 

John Hoffman
Conway, NH

1D X Mark III, Many lenses, Pixma PRO-100, MX472, LR Classic
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