> > What > > else differentiates this lens from just an EX series that will work > > >fine on a digital SLR? > >I think it's all. Nothing more or less to differentiate the lenses.
I believe this DG is mainly marketing bullshoes. Sigma wanted something (thus the 'DG' identifier along the 'also/especially for digital' slogan) which differentiates their lenses from the other lenses (they hope) and makes people buy them for D30 and such. It seems they made optically fast lenses which are wide angled, to be used as fast "normal" lenses which haven't much existed for digi-SLR owners sooner at *reasonable cost*. So they found (or wanted to find) a market niche, nothing more. To make this possible they perhaps didn't make everything to get the best possible optical performance wide open because of the cropping factor of digital cameras. Somehow I feel that at f2.8 or f4 and up from there they are similar performers as the older EX-series are (assuming you don't have a lemon). In the test which I mentioned in my previous mail the Canon 24/1.4L showed *worse* vignetting at f1.4 than the Sigma at f1.8 but at f2 or so they were equal (I should check to be 100% sure). Also the Canon 28/1.8 was not that great wide open as I quess all the owners know. I prefer Canon lenses for myself but I don't think we should trash others without comparing and noticing more then small differencies. Vesa _________________________________________________________________ Chat with friends online, try MSN Messenger: http://messenger.msn.com * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
