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Old Apr 24, 2010, 12:29 AM   #1
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Default How many lens?

I have got some spare cash that i have been saving for a new lens.
I'm looking for a lens that covers the 18-250mm, it can be lower or/and higher focal length, but at least in between that amount.

The camera I have now is a sony alpha a550.
I;ve been looking for the 18-250 sigma and 18-270 tamron, but they all have their positive and negative sides.

Any other comments of on other brands of lenses.

The only thing I'm not sure is, should I get a super zoom or should i buy 2 separate lenses (eg 17-70mm and a 28-300mm) or even three, that will all have the sharpest and least distortion and chromatic aberration?

My budget is between 600 and 700 USD.

Thanks
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Old Apr 24, 2010, 12:51 AM   #2
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the 28-300 is a super zoom also. What lens do you have now?
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Old Apr 24, 2010, 1:59 AM   #3
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Quote:
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the 28-300 is a super zoom also. What lens do you have now?
At the moment I have 2 kit lenses that came with the camera.
A 18-55mm and a 55-200mm from sony.
But i think they are very low quality lenses.
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Old Apr 24, 2010, 2:01 AM   #4
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I was also looking for a wide angle sigma 10-20mm for landscape pictures.
Do you know if this lens is good?
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Old Apr 24, 2010, 2:06 AM   #5
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Well the 28-300 would be a bit redundant in ranges as you have the 18-55 and 55-200. But pretty much all the superzooms will have this issue.

I would lean toward getting a 70-300 if you want more reach. But if you want the convience of a super zoom I would look seriously at the tamron 18-270 over the sigma. At the long end the extra 20mm does mean allot.

PS

Also with the crop body of the a550, the 18 would be allot more useful then 28 for the short end. Giving you a better wide angle then the 28-300 would give you.
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Old Apr 24, 2010, 2:21 AM   #6
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I was also looking for a wide angle sigma 10-20mm for landscape pictures.
Do you know if this lens is good?
The tokina 11-16mm is a better wide angle at a constant 2.8 over the sigma 10-20 with 3.5, fast lens with the tokina
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Old Apr 24, 2010, 5:27 AM   #7
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Quote:
Originally Posted by shoturtle View Post
The tokina 11-16mm is a better wide angle at a constant 2.8 over the sigma 10-20 with 3.5, fast lens with the tokina
The Tokina is not available for the Sony Alpha mount.
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Old Apr 24, 2010, 5:42 AM   #8
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The Sony 18-55 and 55-200 lenses you've got aren't bad, and they're better than the lenses you're considering:

Sony 18-55mm f/3.5-5.6 DT SAM SAL-1855 (Tested)
Sony 55-200mm f/4-5.6 DT SAM SAL-552002 (Tested)

... versus ...

Sigma 18-250mm f/3.5-6.3 DC OS HSM (Tested)
Tamron 18-250mm f/3.5-6.3 Di II LD Aspherical IF Macro AF (Tested)
Sony 18-250mm f/3.5-6.3 DT SAL-18250 (Tested)

BTW, the Tamron 18-270 isn't available for the Sony Alpha mount. Also, the Sigma has optical image stabilization, which would be redundant on your A550.

Superzoom lenses have significant distortion at the wide end, significant chromatic aberration at the long end, and are soft throughout their zoom range. Your A550 is good enough to show those flaws prominently. You're better off with multiple lenses of less ambitious zoom ranges.

If you're dissatisfied with the kit lenses you've got, there are better lenses available, like the Tamron 17-80/2.8, Sigma 18-50/2.8 and 17-70/2.8-4.5, Sony/Zeiss 16-80/3.5-4.5, Sony 70-300 'G' and Tamron 70-300 Di LD.
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Old Apr 24, 2010, 7:12 AM   #9
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Thanks TCav.
I think i will keep the 55-200mm lens for longer and just get a new shorter focal length for now.
If you remember you helped me choose the sony 16-80mm but i lost the bid on ebay. but now i can afford a new one.
I will go through the links you posted and will make a decision.

BTW you know so much about cameras, I'm glad you share your knowledge!!

Thanks for the help!!
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Old Apr 24, 2010, 7:46 AM   #10
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You are very kind. I assure you that I'm standing on the shoulders of giants, some of whom are right here.
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