I owned the Tamron 150-600, and my copy only started to approach the image quality of the 100-400 ii if I kept the focal length at or below 500mm, stopped down to f8. The one advantage to the Tammy was, as stated above, the access to all of the focus points from 400-500 fl. But it was pretty slow to focus and hunted in anything but pretty good light. Was a stop or two behind on IS as well. In general, if fast AF is a real need, then the Tamron isn't your bag.
Thanks for the response. So just so I understand does that mean that you did direct comparisons of the 100-400ii and the Tamron? You then got rid of the Tamron based on your findings? Do you have any shots that directly compare? Sorry if I misunderstood what you said.
Also did you see the shots I posted of the juncos at 552mm? I don't find them soft, but maybe my screen is no good . Please let me know what you think and I don't mind criticism.
I want to buy the Canon, have money in hand and am waiting on hard proof that it is better than the Tamron. I just have not seen it yet.
Here are a few others with the Tamron at 500 or higher for as close to a direct comparison as I can get.
https://www.flickr.com/photos/120553232@N02/15548798790/in/photostream/
https://www.flickr.com/photos/120553232@N02/15611898254/in/photostream/
https://www.flickr.com/photos/120553232@N02/15502558944/
Thanks for the response. So just so I understand does that mean that you did direct comparisons of the 100-400ii and the Tamron? You then got rid of the Tamron based on your findings? Do you have any shots that directly compare? Sorry if I misunderstood what you said.
Also did you see the shots I posted of the juncos at 552mm? I don't find them soft, but maybe my screen is no good . Please let me know what you think and I don't mind criticism.
I want to buy the Canon, have money in hand and am waiting on hard proof that it is better than the Tamron. I just have not seen it yet.
Here are a few others with the Tamron at 500 or higher for as close to a direct comparison as I can get.
https://www.flickr.com/photos/120553232@N02/15548798790/in/photostream/
https://www.flickr.com/photos/120553232@N02/15611898254/in/photostream/
https://www.flickr.com/photos/120553232@N02/15502558944/
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