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Help!
I'm trying to decide between a new Sigma 17-70 f/2.8-4 C and a used Canon 15-85 f/3.5-5.6. I originally bought a used Canon 15-85 which was sent back due to having fungus. When i had the lens i did a few comparison shots against the kit 18-55 and to be honest it wasn't as good as i had expected. This is why i am now considering a new Sigma 17-70. The f/2.8 is also appealing as taking pictures of the dog etc indoors it would be handy. Some reviews say the Sigma is really sharp apart from wide open at 17mm, decent IQ etc and then i read another which says the total opposite and that the Canon is miles better.
Has anyone had both these lenses and have any direct comparisons of the two?
Here are two comparison pictures i took with the 18-55 and 15-85. Both taken with a 550d on a tripod at 35mm and f/8. These are 100% crops, what are peoples thoughts on the 15-85? Obviously the grass area is much better on the 15-85, but the top corners look slightly sharper on the 18-55, and the centre is pretty similar.
18-55 Corner 4
1855Corner4-1000 by skipraider666, on Flickr
15-85 Corner 4
1585Corner4-1000 by skipraider666, on Flickr
18-55 Corner 1
1855Corner-1000 by skipraider666, on Flickr
15-85 Corner 1
1585Corner-1000 by skipraider666, on Flickr
18-55 Corner 3
1855Corner3-1000 by skipraider666, on Flickr
15-85 Corner 3
15-85Corner3-1000 by skipraider666, on Flickr
18-55 Corner 2
1855Corner2-1000 by skipraider666, on Flickr
15-85 Corner 2
1585Corner2-1000 by skipraider666, on Flickr
I'm trying to decide between a new Sigma 17-70 f/2.8-4 C and a used Canon 15-85 f/3.5-5.6. I originally bought a used Canon 15-85 which was sent back due to having fungus. When i had the lens i did a few comparison shots against the kit 18-55 and to be honest it wasn't as good as i had expected. This is why i am now considering a new Sigma 17-70. The f/2.8 is also appealing as taking pictures of the dog etc indoors it would be handy. Some reviews say the Sigma is really sharp apart from wide open at 17mm, decent IQ etc and then i read another which says the total opposite and that the Canon is miles better.
Has anyone had both these lenses and have any direct comparisons of the two?
Here are two comparison pictures i took with the 18-55 and 15-85. Both taken with a 550d on a tripod at 35mm and f/8. These are 100% crops, what are peoples thoughts on the 15-85? Obviously the grass area is much better on the 15-85, but the top corners look slightly sharper on the 18-55, and the centre is pretty similar.
18-55 Corner 4
1855Corner4-1000 by skipraider666, on Flickr
15-85 Corner 4
1585Corner4-1000 by skipraider666, on Flickr
18-55 Corner 1
1855Corner-1000 by skipraider666, on Flickr
15-85 Corner 1
1585Corner-1000 by skipraider666, on Flickr
18-55 Corner 3
1855Corner3-1000 by skipraider666, on Flickr
15-85 Corner 3
15-85Corner3-1000 by skipraider666, on Flickr
18-55 Corner 2
1855Corner2-1000 by skipraider666, on Flickr
15-85 Corner 2
1585Corner2-1000 by skipraider666, on Flickr