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PostPosted: Wed Jan 06, 2010 7:00 pm 
I'm looking at buying some fast zooms for my Pentax kit.

1) Pentax 16-50mm and Pentax 50-135mm
This is my first choice. I like the fact that they're weather sealed, they have excellent build quality and since they're Pentax lenses the K-7 is able to automatically correct distortions and CAs. I'm slightly concerned as there have been many reported focusing issues and lens motor failures on the internet.

2) Tamron 17-50mm and Sigma 70-200mm
The Tamron is reknown for excellent image quality. The build quality isn't so hot, but it is less than half the price of the Pentax 16-50mm so I can't quibble with that! The Sigma 70-200mm is a known lens to me as I have it on the Canon and I can't complain. The extra reach compared to the Pentax 50-135 is also very welcome. The main downside to these third party lenses is the lack of weather sealing and the inability of the camera to automatically correct distortions and CAs.

I guess I'm after opinions. Pentax? Third party? A mixture of both? Weddings and portraits are what I do.


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PostPosted: Thu Jan 07, 2010 9:44 pm 
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Location: France
Bonsoir Philip,

I'm sorry but I can't help... since I have both the Pentax DA* :arrow: 16-50mm and :arrow: 50-135mm. Both are really outstanding lenses.

One hint: :arrow: consider the :arrow: 60-250mm instead of the 50-135mm.

Aperture is f/4 instead of f/2.8 but the K-7 can easily cope with that, and you get incredible telephoto zoom. Remember: 250mm is actually 250 x 1.5 = 375mm :!:

I know budget is also a good decision-maker :wink:

Best regards,

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--- rei_vilo
Pentax K-5 + BG4 + DA* 16-50 + DA* 50-135 + DA* 60-250 + AF-540FGZ
reivilophotography.weebly.com


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PostPosted: Thu Jan 07, 2010 11:59 pm 
Phil,

Let me just share this.

Image

Image

I think your choice is clear my friend.


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PostPosted: Fri Jan 08, 2010 4:39 am 
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Location: France
@Slick3358

You're 100% right :) It was so obvious I just forget to mention it :?


@Phil

In real conditions, read the true story of The Test I Never Wanted To Perform - Today I Had To :wink:

_________________
--- rei_vilo
Pentax K-5 + BG4 + DA* 16-50 + DA* 50-135 + DA* 60-250 + AF-540FGZ
reivilophotography.weebly.com


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PostPosted: Fri Jan 08, 2010 8:00 am 
I'll take the number 1 if i can afford it. I never like 17-50mm because of inconsistent quality control and AF. Sigma is fine, but it turns out that I like 50-135mm (70-200mm) focal length more because it is more versatile especially inside small room/tight space.

for portrait, I think you will need at last f/2.8, so i don't recommend 60-250mm f4 although it is a very good lens for outdoor photography.

btw did u make a move from Canon or you still maintain it?


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PostPosted: Fri Jan 08, 2010 5:32 pm 
I think I'll get the 50-135 and then see. It's a very useful range after all.

@Enche
I have pretty much decided on the move from Canon to Pentax. Can't afford to maintain two systems so with the money I get I can get some nice glass :)


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PostPosted: Fri Jan 08, 2010 6:56 pm 
The 50-135mm F/2.8 is one the lenses I will buy if I'll ever own a Pentax camera. It's an amazing lens. The internal focusing makes it perfect for street & jurnalism & the IQ is superb. I saw countless samples.

(The Tokina version might be a tiny bit sharper,but it lacks the weather sealing & speed of the Pentax.)


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 Post subject: Hmmm...
PostPosted: Fri Feb 26, 2010 12:18 pm 
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Location: Virginia Beach, VA
Well Slick3358, either you hate pentax or you are demonstrating it is weather, more like waterproof???? : )

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