Need help figuring out Sigma lenses and how they are named.

How does the naming work for Sigma lenses

I know for canon EF-S lenses can only be used on the 1.6x crop sensors.

I'm looking to buy the Sigma 10-20mm f/3.5 EX DC HSM ELD SLD Aspherical Super Wide Angle and would want to use it on a 1D mark II and mark III. Will this lens work with the 1D bodies? If not what will I'm looking for something ultra wide?

Thanks

DC stands for designed for crop bodies only. Go to the SIgma site, they will explain all terms to you there.

You probably want the Sigma 12-24. I think the 10-20 will work, but you might have to zoom into 14-15mm to get rid of the vignetting since it was designed for 1.6x not 1.3x.

DC = EF-s
EX = L
HSM = USM
OS = IS
IF = Internal focus (lens doesn't move when focusing)
SLD = super low dispersion I think
ELD = extra low dispersion, I think
ASP = aspherical
APO = uses SLD glass

Like others said, go to the sigma site and it will explain it. Most (all?) DC lenses are EF mount, but don't project a full image circle. You can google and find if it will work on an APS-H sensor. Sometimes the longer focal lengths work fine and the shorter lengths vignette.

Cyrix_2k wrote in post #8851660
DC = EF-s
EX = L
....

Except that DC lenses will fit on full-frame cameras without fear of mirror damage since they are EF mounts, not EF-S. Also, some Sigma EX lenses are DC lenses. Currently, no Canon L lenses are EF-S

^Did I not say "Most (all?) DC lenses are EF mount, but don't project a full image circle?"

Please read my full post. It's rather short. Sigma's EX is the equivalent to Canon's L and only refers to build standards. It is simply the designation for "pro" lenses. Nothing more, nothing less. To say that EX is not an L because some EX lenses project a smaller image circle falls subject to post hoc. If you interpret your statement in a strict sense, you actually disagree with yourself considering the DC lenses are EF and all L lenses thus far are EF mount...

Cyrix_2k wrote in post #8853944
^Did I not say "Most (all?) DC lenses are EF mount, but don't project a full image circle?"

Please read my full post. It's rather short. Sigma's EX is the equivalent to Canon's L and only refers to build standards. It is simply the designation for "pro" lenses. Nothing more, nothing less. To say that EX is not an L because some EX lenses project a smaller image circle falls subject to post hoc. If you interpret your statement in a strict sense, you actually disagree with yourself considering the DC lenses are EF and all L lenses thus far are EF mount...

My intent was not to argue nor to criticize your post. It was merely to clarify. Perhaps I am too strict in my use of the term "equal".

Cyrix_2k wrote in post #8853944
^Did I not say "Most (all?) DC lenses are EF mount, but don't project a full image circle?"

Please read my full post. It's rather short. Sigma's EX is the equivalent to Canon's L and only refers to build standards. It is simply the designation for "pro" lenses. Nothing more, nothing less. To say that EX is not an L because some EX lenses project a smaller image circle falls subject to post hoc. If you interpret your statement in a strict sense, you actually disagree with yourself considering the DC lenses are EF and all L lenses thus far are EF mount...

Relax. Your use of "most (all?)" shows uncertainty...runninma​nn simply clarified things. And I wouldn't say that Sigma EX is the equivalent of Canon L...most L lenses are weather sealed, none of Sigma's are (to the best of my knowledge). Some may not need that feature, but if you're someone that does you can't get it from Sigma, EX or not.

runninmann wrote in post #8856943
My intent was not to argue nor to criticize your post. It was merely to clarify. Perhaps I am too strict in my use of the term "equal".

ok, we're cool then. I thought I was pretty clear with my initial post.

BTW, here's what Wikipedia says for "L"

The "L" officially stands for "Luxury", a reference to the lenses' high price and build quality.[1]

and Sigma for EX

They're as good as synonymous. I think the Canon L line is typically better than Sigma's EX line, but each has its own merits.

Cyrix_2k wrote in post #8851660
DC = EF-s
EX = L
HSM = USM
OS = IS
IF = Internal focus (lens doesn't move when focusing)
SLD = super low dispersion I think
ELD = extra low dispersion, I think
ASP = aspherical
APO = uses SLD glass

Like others said, go to the sigma site and it will explain it. Most (all?) DC lenses are EF mount, but don't project a full image circle. You can google and find if it will work on an APS-H sensor. Sometimes the longer focal lengths work fine and the shorter lengths vignette.

APO = Apochromatic
EX = EX finish, its their nice velvetty finish on their EX-line lenses, and yes EX is supposed to be their "L" line, but they also have some stinkers marked EX.
DC = doesn't mean EF-S, only Canon makes lenses in EF-S mount, DC means the lens is designed for the smaller image circle of crop sensors, it will mount on any EF mount tho.
DG = designed for full frame.

nureality wrote in post #8858193
APO = Apochromatic
EX = EX finish, its their nice velvetty finish on their EX-line lenses, and yes EX is supposed to be their "L" line, but they also have some stinkers marked EX.
DC = doesn't mean EF-S, only Canon makes lenses in EF-S mount, DC means the lens is designed for the smaller image circle of crop sensors, it will mount on any EF mount tho.
DG = designed for full frame.

Thanks I was wondering if they could be mounted to any EF mount canon or just the 1.6x crop bodies.

DC can be considered equivalent to EF-s, even though it's EF mount since those lenses won't work properly on anything but crop sensors. I'd guess that DC stands for "Digital Crop" or "Digital Compact"

DG = digital & projects the full image circle. The older lenses (such as the first 70-200 f2.8) by sigma were FF but not marked DG because they didn't have the additional coatings on the rear element.