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09-28-2010, 01:53 PM   #1
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Speaking Sigma HSM only: 50-150mm f/2.8 -vs- 70-200mm f/2.8 , please comment

If you look at my lens line-up in my sig, you'll notice the huge hole I have in my focal length coverage, especially in AF (jumps to 300mm from 75mm). And mostly primes; tho I really am a 'zoom kind'a guy'. Ironic, isn't it.

So for various reasons, primarily speed, noise, and ease of MF control, I'm pretty close to concluding that I'll go for the Sigma 70-200/2.8. Yes, yes, I know full well about the Tamron, but I'm thinking I won't be going for it due to the screw-focus and actions one has to perform to change to AF; which is the #1 and almost only complaint I have about the 28-75/2.8. The quick MF focus override on my Sigma 300/2.8 is a joy to have and use. Plus, B&H owner reviews seem far more positive on the 70-200/2.8 than owners here.

But then I was reminded there's a 50-150mm f/2.8 option too. There's a great thread on it on this forum. It's lighter. And that got me thinking maybe that would suit. But is it sharper and/or does if AF focus better/quicker?

Also, if I wanted the length and could afford the stop of light, I'd use it with the Tamron 1.4x TC w/the Pz contacts. Of course, if I go for the 70-200/2.8 I already have that focal length covered at f/2.8 and I could do the same using that TC and end-up with something possibly close to the screw-driven Sigma 100-300 f/4; this again is my preference. But I'm willing to be talked into the 50-150/2.8.

So, hoping those with experience with either and moreso both to share, and if you've used either or dare I say both with the Tamron or Kenko 1.4x Pz TC well that's icing on the cake!

Thanx for the thoughts and comparo's if possible.

09-28-2010, 02:44 PM   #2
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I haven't used the 70-200 mm lens so can't really compare it directly with the 50-150 but I do have the later and can say I am very happy with it. I had originally bought Pentax 50-135 SDM but decided to return it after thinking more about the SDM problems. I then got the Sigma and can honestly say it is a great lens. It is sharp and fast with a great bokeh and the results have been absolutely fantastic. Below is a shot with it:

10-03-2010, 08:42 PM   #3
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Thanx for the thoughts Naim.

Otherwise, little love for the topic [me?] on PF. :ugh:

I'm still on the fence. I almost think I need to get the 70-200/2.8 now tho, as since Sigma seems to be moving the OS in their lenses I'm worried it might not be long before it's discontinued.
10-04-2010, 09:45 AM   #4
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Hi m80,
I don't have the 50-150 but recently got the 70-200 HSMII and can give my impressions. I love it!! Most of my photographs thus far have been 'playing' with it so nothing to post but: my copy is sharp, little to no CA, is very quick AND accurate to focus, and I love the full-time manual focus over-ride. The HSM is quiet. I use it with my K7. I was not interested in the newer HSM/OS (twice the price) and found the HSM II was out-of-stock for a while but when BH Photo listed it recently I picked it up quickly. The only slight negative is weight - it's a little hefty at 3 lbs. Build quality is excellent, focus and zoom rings move smoothly (no creep) and, well, I just couldn't be happier with it. HTH


10-04-2010, 10:05 AM   #5
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I think what I have to do is take my K10D and Tamron 1.4x Pz TC down to whoever has both in stock, Adorama or B&H, and try both next time I spend a few days in NYC. I am leaning towards the 70-200/2.8. Not that I ever sell anything, but that it covers full-frame it's likely to have better re-sale too.
10-04-2010, 10:22 AM   #6
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I've owned all 3 of those lenses and for the convenience/weight, the 50-150mm won. The Tamron was the sharpest and had the best bokeh but its whine frightened the animals and made heads turn. The Sigma 70-200mm was super quiet with fast AF, not as sharp as the Tamron, decent bokeh. Both of the 70-200mm were a bit of a nuisance to carry around all day and bulky. The 50-150mm just worked out better (for me). Very fast and accurate AF and whisper quiet, decent bokeh. Its a tuff decision and taking the tc to test them is your best option.

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