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I have moved this article back to "Sigma Corporation" since that is the name the company itself uses. We don't abbreviate if the company doesn't; doing so regardless is not WP convention. Matthew Brown (Morven) (T:C) 09:24, 24 September 2006 (UTC)[reply]
According to Sigma's website, the DG denotation is a bit different than what is described here (a coating):
http://www.sigmaphoto.com/popup.asp
DG (DG Lens)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
logic (talk) 01:50, 22 March 2008 (UTC)[reply]
Sigma Cp. also produces SLR external flashes for Sigma , Canon and Nikon Slrs —Preceding unsigned comment added by Kernelmode (talk • contribs) 08:32, 11 October 2008 (UTC)[reply]
You have a nice list of current Sigma lens models, but what of the discontinued lenses? That is why I visited in the first place. I was trying to find out more about the Sigma 400mm Prime apo, f5.6 (only) telephoto lens and others, possible treasures to be found on the used market, for my use on Sony dslr equipment. Bpjohns (talk) 05:21, 17 October 2008 (UTC)[reply]
SIGMA Discontinued Lens Chart:
http://www.sigmaphoto.com/discontinued-lens-chart
--212.255.42.241 (talk) 03:08, 26 December 2011 (UTC)[reply]
Producthistory 35-mm-Film:
--212.255.42.241 (talk) 03:01, 26 December 2011 (UTC)[reply]
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this article does not mention that Sigma among others sell EF mount lenses that are crop for EF-S mounts they market them at EF DG full frame and EF DC Aps-c sensor Canon does not do this all Canon EF lenses are full frame the EF-S lenses are Aps-c I contacted Canon and they said they do not recommend third party lenses I was a little disappointed as even my Photography teacher knows about this issue as well as the many youtube videos showing the vignette of the lens this is not a mounting defect as you can not put a EF-S lens onto a EF mount but you can do the opposite and that left a window of opportunity these third party's are trying to exploit there are not cheap alternatives to Canon products you have to pay the same price to get the full frame lenses "EF DG" please consider adding this to the article if you are not a sigma employee who wrote it19dreiundachtzig (talk) 20:26, 27 July 2020 (UTC)[reply]
