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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 22 Dec 2013 (Sunday) 08:15
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Sigma 17-70 vs Tamron 17-50

 
Frodge
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Dec 22, 2013 08:15 |  #1

I think I have my choices down to these two lenses. The sigma would be good to go with my 70-300vc. I wouldn't lose any focal length in between. But what lens is better for color rendition and sharpness? Would it be justified to get one of these over my 18-55 is.


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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BrickR
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Dec 22, 2013 10:21 |  #2

The Sigma is wider, longer, and faster than the 18-55. No brainer.
The Tamron is constant 2.8 but the range is more restricted than the 17-70.
You will not lose any FL if pairing 17-70 with your 70-300.

I would say get the 17-70


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trewyn15
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Dec 22, 2013 10:31 |  #3

I may be getting the Tamron for christmas, I can update you with results on it.

I stand by tamron though, you're not going to miss much in that 50-70 range as you probably dont with your 55-70 right now.

I haven't used Sigma OS, but Tamron VC is top notch and their optics are wonderful, as you know with your 70-300vc.


Mitch
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kfreels
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Dec 22, 2013 12:20 |  #4

Both are significant improvement on the kit lens. The Tamron is faster, being a constant f2.8. It is also a tad sharper wide-open than the Sigma if you're a pixel peeper. But I found the zoom range too limiting on the Tamron and opted for the Sigma. I'm quite pleased with it. If I want to maximize sharpness I stop down half a stop and all is fine. CA on the new version is improved so I would definitely shoot for the new version and not the previous version. The Sigma has an issue with lens creep. If you are carrying with a sling strap, you want to get into the habit of locking the zoom before you let it hang.

What I like best about the Sigm is the "macro" capabilities. It's not a true macro but you can zoom out to 70mm and focus down to about 2 inches in front of the glass. You can also zoom out and step in just as close and focus which gives some versatility you just can't get with the Tamron. It opens up a lot of doors that aren't available with your kit lens or the Tamron. When you add the additional focal length up to 70mm, it's a tough lens to beat - especially for the money.

If you plan to shoot in the 50mm and lower range at f2.8 all the time, then I would give the Tamron serious consideration and maybe toss a coin. Otherwise I would get the Sigma. You may want to look through your existing images and see where the majority of your shots occur.


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jbrackjr
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Dec 22, 2013 12:48 |  #5

FWIW, I just picked up a used (excellent + condition) non VC Tamron 17-50 for $275. I've only had the lens for two days, but can say it is very sharp at 2.8 and well worth the money spent. Focusing on my 60D is spot on but slightly on the noisy side and it does hunt in low light. No lens creep.

Thought I would give it a try over my 15-85. Love the 15-85 but just thought I would try something faster. Time will tell.


Jim
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gremlin75
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Dec 22, 2013 13:09 |  #6

Both are grat lenses. The question really comes down to; Do you want a constant f2.8 or do you want an extra 20mm on the long end and "macro" capabilities?

Answer that and you'll know which lens to get!




  
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Frodge
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Dec 22, 2013 13:23 |  #7

I'm guessing the constant 2.8 is probably the most worthwhile in the long run.


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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Lexar
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Dec 22, 2013 15:21 |  #8

why not a sigma 17-50 OS?

Its suppose to be better then the Tamron with OS stabilization and f2.8


Canon 70D | 15-85IS | Σ17-50/2.8 | Σ30/1.4 | 40/2.8 Pancake | 100/2.0 | 55-250STM | 430EXII

  
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Frodge
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Dec 22, 2013 15:41 |  #9

I thought the sigma was not constant aperture......

Also, is it worth going from an 18-55 IS to either a sigma or tamron 17-50. I'm talking, is I worth the money when al is said and done?


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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MarshVegas
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Dec 22, 2013 16:24 |  #10

I just bought the Tamron 17-50 non VC to replace my kit 18-55, it'll be here Friday I hope. I'll let you know if it's worth it.




  
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mayt444
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Dec 22, 2013 17:51 as a reply to  @ MarshVegas's post |  #11

I bought the 18-55 IS STM and sold my Tamron 17-50 non VC. It was a downgrade in build quality but not so much in image quality. Having IS makes a lot of difference. I don't miss the 2.8.


Clay
Canon 70D, Canon G12 , Tamron SP 150-600mm Di VC USD, Sigma 17-70mm F2.8-4 DC Macro OS HSM C, Canon 18-55 IS STM, 55-250 IS, Canon 50mm 1.8 II.

  
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Frodge
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Dec 22, 2013 17:59 |  #12

Why don't you miss it?


_______________
“It's kind of fun to do the impossible.” - Walt Disney.
Equipment: Tokina 12-24mm, Canon 40mm 2.8, Tamron 17-50 2.8 XR Di, Canon 18-55mm, Canon 50mm 1.8, Tamron 70-300VC / T3I and 60D

  
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japanbran
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Dec 22, 2013 18:20 |  #13

I had both of them, Personally on my 60D the tamron seemed sharper. I ended up selling the sigma.


5D Mark III Gripped/60D Gripped/70-200mm f2.8/24-105 f4 L/100mm 2.8 USM Macro/50mm 1.4 USM/17-50 f2.8/and some flashes and stuff.

  
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gremlin75
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Dec 22, 2013 18:39 |  #14

Frodge wrote in post #16547423 (external link)
I thought the sigma was not constant aperture......

Also, is it worth going from an 18-55 IS to either a sigma or tamron 17-50. I'm talking, is I worth the money when al is said and done?

The sigma 17-50 f2.8 is a constant aperture. The sigma 17-70 f2.8-4 is not

Only you can answer if the money spent on a constant f2.8 lens is worth it over the 18-55 IS. With either of the 17-50 f2.8's you get better IQ and fast aperture which means shallower DOF and faster shutter speeds

It sound like you may not be sure why might need things like f2.8. If thats the case then don't spend the money till you know exactly what you need. Hell some people never 'need' a constant f2.8 lens and happily work with an f3.5-5.6




  
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moltengold
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Dec 22, 2013 18:48 |  #15

i don't know the sigma
but yesterday I bought the Tamron and this is my first shot
70D + Tamron SP AF 17-50mm f/2.8 XR Di II LD IF + Speedlite 580EX II

IMAGE: http://im38.gulfup.com/4VFJr.jpg

100% crop

IMAGE: http://im38.gulfup.com/r2Asx.jpg

| Canon EOS | and some canon lenses

  
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Sigma 17-70 vs Tamron 17-50
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