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05-06-2011, 12:18 AM   #1
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canon 70-200 4l pentax alternative

I had that lens a while ago and it was optically perfect at all range of zoom and aperture. Is there something similar for pentax. Sigma70-200 2,8 HSM II is good but for what I've raead - at 200mm(where I use it the most) crommatic abberation is a major problem, and isn't the sharpest of them all. So the canon one is selling for 750$ now- and I am seriously considering not switching to Pentax if I can't get a good telezoom lens for that money

05-06-2011, 01:37 AM   #2
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I use a Pentax 70 - 210mm on a Pentax SFXn, Pentax LX, Pentax K10D & K20D optically perfect and with the crop factor you get a little extra focal.
People often dismiss these older lenses, but optically speaking, they are often better than modern lenses, optically.
Should be able to find a good second hand one, I have had mine from new.
05-06-2011, 01:56 AM   #3
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The Tamron 70-200 is very good, as is the Pentax 60-250mm. The truth is that Pentax doesn't really have an equivalent of the canon l 70-200mm, so the Tamron will probably be your best bet.
05-06-2011, 07:41 AM   #4
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I think most would say the DA*60-250/4 would be the equivalent of the Canon. A significantly wider focal length range, but same aperture, similar build quality, arguably similar IQ (I've never seen a direct comparison).

But note if you're seeing the 70-200/4 L for $750, that would have to be the older one without stabilization. If that's your budget, then the Pentax 60-250 would be out of the question, but either of the 70-200/2.8's (Tamron or Sigma) could be an option.

05-06-2011, 04:41 PM   #5
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There is no alternative. The EF 70-200/4L (IS or not) are unique. You would be fooling yourself if you think any Pentax zooms could match them optically, AF or IS.
05-06-2011, 05:29 PM   #6
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QuoteOriginally posted by wlachan Quote
There is no alternative. The EF 70-200/4L (IS or not) are unique. You would be fooling yourself if you think any Pentax zooms could match them optically, AF or IS.
I have to agree. A couple months ago, purely out of curiosity, I bought a Canon 70-200/4L IS (and a Canon 5D body to try it out with). It really outstanding in terms of optics, build, AF and IS.

In terms of physical size and build quality, the DA*50-135 is similar. However the AF of the DA*50-135 is very slow in comparison and unless you're comparing Pentax crop to Canon FF, it's a pretty focal length different range.

The DA*60-250 is closer in terms of range and it has the same max aperture. The DA*60-250 gives you a little more reach and a little more width, which is nice. The AF speed of the 60-250 is better than the 50-135, but not at the level of the 70-200/4L. The build of the 60-250 is very good, but as it is not internal zooming, it doesn't feel as smooth and some people don't like the fact that it changes length as you zoom (myself included).

The Tamron 70-200 is an option as well. It's probably the best value, and optically it's excellent and a stop faster than the 70-200/4L. However, the build quality and AF speed are a couple steps behind the Canon 70-200/4L and it's physically a lot bigger (but smaller than a Canon 70-200/2.8, which is a more fair comparison).
05-09-2011, 12:15 AM   #7
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???

I've even heard that because of the simpler build- 70-200 4l without the stabilization is the sharpest one. I'm comparing canon T2i and pentax k-r at Canon T2i vs Pentax K-r . k-r obviously has better color depth, dynamic range, and image quality(how big a difference that would be in printed photos for exhibitions). However, in street photography and wildlife, fast AF is everything.
QuoteOriginally posted by dgaies Quote
I have to agree. A couple months ago, purely out of curiosity, I bought a Canon 70-200/4L IS (and a Canon 5D body to try it out with). It really outstanding in terms of optics, build, AF and IS.

In terms of physical size and build quality, the DA*50-135 is similar. However the AF of the DA*50-135 is very slow in comparison and unless you're comparing Pentax crop to Canon FF, it's a pretty focal length different range.

The DA*60-250 is closer in terms of range and it has the same max aperture. The DA*60-250 gives you a little more reach and a little more width, which is nice. The AF speed of the 60-250 is better than the 50-135, but not at the level of the 70-200/4L. The build of the 60-250 is very good, but as it is not internal zooming, it doesn't feel as smooth and some people don't like the fact that it changes length as you zoom (myself included).

The Tamron 70-200 is an option as well. It's probably the best value, and optically it's excellent and a stop faster than the 70-200/4L. However, the build quality and AF speed are a couple steps behind the Canon 70-200/4L and it's physically a lot bigger (but smaller than a Canon 70-200/2.8, which is a more fair comparison).
05-09-2011, 01:39 AM   #8
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QuoteOriginally posted by miljenko23 Quote
However, in street photography and wildlife, fast AF is everything.
in this case Pentax is not your friend, unless you won't go for the older FA series lenses which AF fast. There you have FA*80-200, which has a reputation of a stellar performer but is a brick of a lens

PS: some of my best street shots came from MF lenses, so not, fast AF is not necessary when doing streets

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