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12-16-2013, 05:19 PM   #1
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Pentax 55-300 f4-5.8 vs Tamron 70-200 f2.8

To start with i am aware there is fair bit of discussion about these two lenses and i do own both (DA-L for Pentax). I generally stay in the range of 100-200mm

Just wanted to get the opinions of people about this comparison.

From my tests i found Tammy being little bit sharper up to f8-f9 also much faster auto focus. But Pentax is quite light + price (DA-L ones are less than 200 British Pounds in Ebay)

When you consider prices of both lenses Pentax seems to be a great deal. Now your turn to share ideas!

12-16-2013, 05:32 PM   #2
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I really don't think there is much of a comparison, different lenses for different purposes. If you want inexpensive, light and can live with slow go with the Pentax. If you want fast, and heavy then go Tamron. The Tamron is twice the price roughly, even more against the DAL version of the Pentax.

I cannot imagine anyone who likes the features of one being happy with the other. I've never used the Tamron, but for what it is the 55-300 is an excellent value. I've replaced mine with the DA*60-250 now and I am very happy with that.
12-16-2013, 06:22 PM   #3
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QuoteOriginally posted by Gurcem Eugene Zekai Quote
To start with i am aware there is fair bit of discussion about these two lenses and i do own both (DA-L for Pentax). I generally stay in the range of 100-200mm

Just wanted to get the opinions of people about this comparison.

From my tests i found Tammy being little bit sharper up to f8-f9 also much faster auto focus. But Pentax is quite light + price (DA-L ones are less than 200 British Pounds in Ebay)

When you consider prices of both lenses Pentax seems to be a great deal. Now your turn to share ideas!
Apples and oranges, you're basically comparing a pro-grade fixed-aperture zoom to a consumer zoom. Both have their pros and cons

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12-16-2013, 06:23 PM   #4
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There's generally not much point in using the Tammy if it doesn't give you excellent IQ in the ~f/4 (or maybe even faster) range. But I suspect it does.

The DA55-300 is a nice lens (especially for the price), but you'll get much better subject isolation using the Tammy between ~f/3.5 and f/4.5. This should be it's strength, and unless you're also constantly shooting in low light, it's the main reason to own this lens.

12-16-2013, 06:35 PM   #5
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I don't have the 55-300, but the Tamron is almost like a great picture wizard...It seems I can take a picture of my shoes and it will come out great.

A little bump in the shadows, and WHAMMO: (at f4/200mm)

12-16-2013, 08:21 PM   #6
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Sharpness alone, my DAL 55-300 does a very good job, and almost no or very minimal CA. i heard tamron telephoto zoom suffer purple fringing wide open
12-16-2013, 08:42 PM   #7
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QuoteOriginally posted by rp_dxn Quote
Sharpness alone, my DAL 55-300 does a very good job, and almost no or very minimal CA. i heard tamron telephoto zoom suffer purple fringing wide open
http://farm9.staticflickr.com/8161/6976802438_24fcf4a5b8_o.jpg
Nonsense. The Tamron 70-200 is sharper than the DA 55-300 at all apertures, and I have never had CA issues.
12-16-2013, 08:47 PM   #8
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well, i never said pentax 55-300 is sharper than tammy? please read

12-16-2013, 08:50 PM   #9
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The sharper part is for others. The part referencing you is the CA/purple fringing.
12-16-2013, 09:09 PM   #10
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QuoteOriginally posted by rp_dxn Quote
Sharpness alone, my DAL 55-300 does a very good job, and almost no or very minimal CA. i heard tamron telephoto zoom suffer purple fringing wide open
That would be the Tamron 70-300 F4-5.6. A lens more or less directly comparable to the DA 55-300. It is known as the "Purple Monster"...
12-17-2013, 09:11 PM   #11
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QuoteOriginally posted by boriscleto Quote
That would be the Tamron 70-300 F4-5.6. A lens more or less directly comparable to the DA 55-300. It is known as the "Purple Monster"...
Correct. At one point I owned the Tamron 70-300mm f/4-5.6 Di LD Macro, and I can say it had very good resolution, but a lot of purple fringing. I have the Tamron 70-200mm f/2.8 Di LD (IF) Macro now, and it has terrific resolution and no significant purple fringing at all. It also behaves well with a 1.5x teleconverter, which basically turns it into a 105-300mm f/4 lens.
12-18-2013, 07:18 AM   #12
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QuoteOriginally posted by boriscleto Quote
That would be the Tamron 70-300 F4-5.6. A lens more or less directly comparable to the DA 55-300. It is known as the "Purple Monster"...
I have one of those also, it is "ok for the money"... at $129. much purple and the images are overall kind of "muddy"...
I only use on my "truck camera"... for those shots where a cell phone camera would do but I have a DSLR handy!
12-18-2013, 08:30 AM   #13
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QuoteOriginally posted by skid2964 Quote
I have one of those also, it is "ok for the money"... at $129. much purple and the images are overall kind of "muddy"...
I only use on my "truck camera"... for those shots where a cell phone camera would do but I have a DSLR handy!
It's not that bad, especially from 70-200mm:

Tamron AF 70-300mm f/4-5.6 LD Di macro (Pentax K) - Review / Lab Test Report

As you can see, from 200mm-300mm there is a drop in contrast and resolution and an increase in purple fringing, so it's not a lens to use at 300mm without stopping down and post-processing the images.
12-18-2013, 02:19 PM   #14
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QuoteOriginally posted by Adam Quote
Apples and oranges, you're basically comparing a pro-grade fixed-aperture zoom to a consumer zoom. Both have their pros and cons
Yeah, what Adam said... this thread has my attention especially if you noticed the other thread I have going, but I think a still better thread would be the DA 60-250 F4 vs/ Tamron 70-200 2.8
I know the range is not exact, nor the f stop, but Pentax doesn't make the FA80-200 F2.8 anymore, and if you can find one you are buying an old AF lens... I know some people love the old FA, and others say the king has no cloths... So for relevence sake as to what is commonly available, I'd rather stick to the DA 60-250 vs/ the tamron.

I've been trying to find every photo gallery I can that lets you choose lens/camera combo, not just reviews. I've looked at photo's till my head hurts. And from what I see, what I call photo's that have that special look, come more from the Tamron than the DA. The thing thats not fair in that statement, is that it's a lot harder to find galleries with as many samples from the 60-250, and those samples are dependent on the photographers skills.

I'd really like to see some work from a skilled photographer that owns both, and read their opinion.
12-18-2013, 03:30 PM   #15
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QuoteOriginally posted by Gurcem Eugene Zekai Quote
To start with i am aware there is fair bit of discussion about these two lenses and i do own both (DA-L for Pentax). I generally stay in the range of 100-200mm

Just wanted to get the opinions of people about this comparison.

From my tests i found Tammy being little bit sharper up to f8-f9 also much faster auto focus. But Pentax is quite light + price (DA-L ones are less than 200 British Pounds in Ebay)

When you consider prices of both lenses Pentax seems to be a great deal. Now your turn to share ideas!
Take your Tammy in for repair, because it must be broken. The Tamron 70-200 shouldn't be just a "bit" sharper than your DA 50-300, it should be one of the sharpest zooms you will ever own. I've owned the DA 55-300 and currently own the Tamron and the Tamron out-resolves the sensor on my K-5 at F/4 to F/5.6 where as the DA 55-300 is very soft compared to it at just about all focal ratios. Plus the Tamron has nearly almost no CA and absolutely beautiful bokeh. Things that I can't say about the Pentax, and shouldn't be able to since its a good amount cheaper and is just a consumer lens (should be comparing the 60-250 F4). As said above, the Tamron is like a picture wizard...



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