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tamron vs sigma

5 Jul 2013 2:18PM
hi I need some help
i'm planning on buying a new lens and a student so cash in tight and don't want to make a mistake on the lens
the two i'm thinking off are
Tamron AF 18-270mm f/3.5-6.3 Di II VC PZD LD Aspherical IF Macro Zoom Lens with Built in Motor for Canon DSLR Cameras
Sigma 18-250mm f/3.5-6.3 DC Macro OS HSM Lens for Canon
has anyone got a yes or no to any of these two
thoughts please

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Ade_Osman 14 4.5k 36 England
5 Jul 2013 2:27PM
Both the Sigma have been reviewed on EPZ in the past, I think if it were me I'd plump for the focal length of the Tamron. An extra 20mm doesn't sound much, but it can make all the difference some days.....
pulsar69 13 1.6k 6 United Kingdom
5 Jul 2013 11:51PM
"An extra 20mm doesn't sound much, but it can make all the difference some days....."

Oh dear Blush
Ade_Osman 14 4.5k 36 England
6 Jul 2013 5:01AM

Quote:Oh dear Blush

Personally I wouldn't buy either Andrew......But the question was asked Tongue
andart 15 501 United Kingdom
6 Jul 2013 9:10AM
have a look at tamron 365 road test
seahawk 10 1.1k United Kingdom
6 Jul 2013 9:11AM
I have the Sigma - I tried both in the camera shop but felt the Sigma was better built. Optically not a lot to choose between them and in my opinion the extra 20mm of the Tamron is insignificant, especially as I felt the Sigma was slightly sharper at full zoom. The differences are not huge, however, so it will come down to what feels better in your hand.
Pushendu 4 13 India
9 Jul 2013 8:18AM
I am sorry for late reply, hope younhaven't made the purchase yet. Sigma lenses have better build quality and optics than Tamron for any lens model. Sigma is considered as 1.2 - 1.4 times better than Tamron. But honestly the new Tamron 24-70 2.8. And 70-200 are good enough. Can you quicky tell me your purpose. Because its really the lenses that make difference. If you are not buying for professional work, then I will suggest a 70-200 or 24-70. Depends upon your purpose, don't go for multipurpose lens ranging too much. They have shity optics and you will start hating it soon. My suggestion is a 50mm 1.8 by canon + 70-200 by sigma or tamron.
Thanks and Cheers!
mikehit 8 8.0k 13 United Kingdom
9 Jul 2013 8:46AM

Quote:Sigma is considered as 1.2 - 1.4 times better than Tamron

I would be interested to know what those numbers mean.
Pushendu 4 13 India
9 Jul 2013 10:46AM
Hmmm. Thanks for reading carefully. Well, its a scale used to compare the performance and optics of lenses, here Tamron scored 1 and sigma between 1.2 - 1.4 on average while canon scored 2.
So, on a scale of 10,
Canon - 10
Sigma - 6-7
Tamron - 5
Note, scaling used to compare only 3 brands.

Ao, if canon gives 100% efficient image quality, at same settings, lenses with similar focql length will give, Sigma 60-70% of canon, tamron 50% if canon.

mikehit 8 8.0k 13 United Kingdom
9 Jul 2013 1:44PM
I will rephrase the question: what are these numbers, how are they arrived at?
How do you have '60% image quality'?
arhb Plus
10 3.3k 68 United Kingdom
9 Jul 2013 2:03PM
I don't own any Tamron lenses, but I have returned a Sigma lens because of AF malfunction.
Sigma have a quality control reputation that has been discussed on epz more than once since I've been frequenting the site.
When you get a good Sigma lens, it is very good - I have had 3 Sigma lenses that have been excellent.
If you get the dodgy one that got through QC, it's a pain in the butt! This has happened once

I'm not aware of these issues with Tamron.
Pushendu 4 13 India
9 Jul 2013 6:05PM
Seems like you havent used any canon L series lens ever, please test it and sigma. You will come to know what I meant by 60-70% quality. Wink
Pushendu 4 13 India
9 Jul 2013 6:07PM
And, people who talk about facts and figures are stats people or accounts person, creative people should not get into these things.
snapbandit 13 2.2k 3 Northern Ireland
9 Jul 2013 6:11PM
just curious, who carried out these IQ tests? & where can we see/find the results & testing criteria?

would be interesting to see.
arhb Plus
10 3.3k 68 United Kingdom
9 Jul 2013 6:17PM
I mentioned QC = quality control, which is about testing finished products for functionality before the are sold to consumers.
Nothing to do with IQ = image quality

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