Help with a lens sigma wide angle

[mercmanuk]

the Sigma 15-30mm f3.5/4.5 Aspherical EX lens, with the rear filters are these any good, i have the 10-20mm which is wicked, but this one seams a Little tamer on the wide, and could be of more use, with structural, buildings and people with out the pointy faces on close up, is this lens considered a good wide angle or do the rear filters cause a problem, also how would you protect the glass at the front.

Regards Mark.

 

[simonkit]

the Sigma 15-30mm f3.5/4.5 Aspherical EX lens, with the rear filters are these any good, i have the 10-20mm which is wicked, but this one seams a Little tamer on the wide, and could be of more use, with structural, buildings and people with out the pointy faces on close up, is this lens considered a good wide angle or do the rear filters cause a problem, also how would you protect the glass at the front.

Regards Mark.

Here's the photozone review for the Canon mount version.. sounds to me as though the distortion on the 10-20 would probably be less than the 15-30 at equal focal lengths

http://www.photozone.de/canon-eos/311-sigma-af-15-30mm-f35-45-ex-dg-lab-test-report--review

simon

 

[towershot]

A couple of shots on the first page (seascapes) with this lens,but the back elements seem normal to me ,No filters or owt,the front element sticks right out,but is protected by a built in hood that you can,t take off.
No filters will screw on so you would have to blue tack them on.

http://www.flickr.com/photos/rickuspics/

PS. lens used on my 35mm film Nikon F2A photomic.

 

[mercmanuk]

A couple of shots on the first page (seascapes) with this lens,but the back elements seem normal to me ,No filters or owt,the front element sticks right out,but is protected by a built in hood that you can,t take off.
No filters will screw on so you would have to blue tack them on.

http://www.flickr.com/photos/rickuspics/

PS. lens used on my 35mm film Nikon F2A photomic.

Just had a look they are very good and just what i am looking for, the 10-20 i have is just to wide, and flat these have more depth to them, thats made my mind up some what , anyway take in raw, all that can be done after

Regards Mark.