Used Sigma 400mm 5.6 AF (+ TC 1.4X) VS Tamron 150-600mm .. IQ and Weight ?

Started Jun 13, 2014 | Questions thread
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Lassoni Regular Member • Posts: 492
Used Sigma 400mm 5.6 AF (+ TC 1.4X) VS Tamron 150-600mm .. IQ and Weight ?

I don't want to write too much, but basically, I think getting a 400mm prime could be much lighter + better image quality solution. It's probably pretty close to being comparable to Canon's 400mm 5.6. Both the "Tony Northrup" https://www.youtube.com/watch?v=1fmMG5jgDwk&list=PLwIVS3_dKVpsjSZrQ7H-Nw8GQ7ZuDYyaD tamron review , andhttp://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=278&Camera=453&Sample=0&FLI=1&API=1&LensComp=929&CameraComp=453&SampleComp=0&FLIComp=5&APIComp=0 test indicate, that atleast in canon's case, it seems to be sharper than Tamron. (Canon could also be used with TC 2x to 800mm, and it would still give better results than any Nikon 300mm or 80-400mm TC-ing ... basically @ 800 it's slightly softer than Tamron @ 600)

The idea of Sigma was reinforced when I found that a person has tested the said lens with D800http://www.csse.monash.edu.au/~carlo/Sigma-AF-400mm-f5.6-APO-A.html . I found these pretty impressive image quality wise. It seems good with the TC 1.4 , so it probably has similiar performance as canon? Maybe go 800mm too?

Prime would weight 800grams less than the tamron, would imo be much easier to handle. It's the fact that canon weights less and also happens to be sharper that this Sigma could be good potential. Does anyone have experience of this sigma, maybe compared it to the tammy?

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