60D - Canon 17-85mm vs. Tamron 17-50mm VC ?

Started 10 months ago | Discussion thread
Cclr
Regular MemberPosts: 148
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Re: The Tamron 17-50 VC version is really a great lens
In reply to ultimitsu, 9 months ago

Fabulous resized results, ultimitsu, with the 17-55 IS in low light at 1/5 sec, 17mm, f/2.8 ISO 1600.

I've added a quick snap from yesterday at 1/25 sec, 17mm, f/2.8 ISO 400, with the Tamron 17-50 VC and T4i.

ultimitsu wrote:

These images look nice, however they do not assist your point -

1, they are taken at F5.6 to F8, this is a F2.8 lens, and it is the F2.8 sharpness that is the center of the issue. if F5.6 to F8 sharpnes is all that matters then canon 18-55 IS would suffice.

2, they are taken in 1/400 to 1/1000 SS, that does not indicate how good IS is.

3, they are all 1800x1200, that is 1/8 the full resolution. with a bit of post-processing, even a mediocre lens would look quite sharp when downsized this much.

Here is a 1/5s F2.8 image from 17-55 IS. it is not full res but at iso1600 you wouldnt want to see full res anyway.

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

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