01-29-2013, 04:26 PM
New 30mm F1.4 DC HSM by Sigma has a very different optical design with front element much smaller.
Looks like a simplified version of their latest FF 35 F1.4:
http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/features.html
Old 30/1.4:
![[Image: 300-lens-contstruction.jpg]](http://www.sigmaphoto.com/client/images/products/300-lens-contstruction.jpg)
New 30/1.4:
![[Image: construction_thumb.gif]](http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/images/specifications/construction_thumb.gif)
FF 35/1.4:
![[Image: construction_thumb.gif]](http://sigma-global.com/en/lenses/cas/product/art/a_35_14/images/specifications/construction_thumb.gif)
MTF time!
Old 30/1.4:
![[Image: 300-mtf-chart.gif]](http://www.sigmaphoto.com/client/images/products/300-mtf-chart.gif)
New 30/1.4:
![[Image: mtf.gif]](http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/images/data/mtf.gif)
FF 35/1.4:
Looks like a simplified version of their latest FF 35 F1.4:
http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/features.html
Old 30/1.4:
![[Image: 300-lens-contstruction.jpg]](http://www.sigmaphoto.com/client/images/products/300-lens-contstruction.jpg)
New 30/1.4:
![[Image: construction_thumb.gif]](http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/images/specifications/construction_thumb.gif)
FF 35/1.4:
![[Image: construction_thumb.gif]](http://sigma-global.com/en/lenses/cas/product/art/a_35_14/images/specifications/construction_thumb.gif)
MTF time!
Old 30/1.4:
![[Image: 300-mtf-chart.gif]](http://www.sigmaphoto.com/client/images/products/300-mtf-chart.gif)
New 30/1.4:
![[Image: mtf.gif]](http://www.sigma-global.com/en/lenses/cas/product/art/a_30_14/images/data/mtf.gif)
FF 35/1.4:
![[Image: mtf.gif]](http://sigma-global.com/en/lenses/cas/product/art/a_35_14/images/data/mtf.gif)