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12-17-2009, 05:34 PM   #16
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The Pentax 55-300 is a really sweet long zoom, sharper than any other long AF zoom I've tried, and well worth getting.

01-16-2010, 09:55 PM   #17
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here are two images.

the first is with a sigma 70-300mm (possibly non APO - as i picked it up 2nd hand)

the second one is using a pentax DA L 55-300mm.

Under proper light, there seems to be little to chose. The sigma is heavier, so I find it easier to use.
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Last edited by ariban; 01-16-2010 at 10:51 PM. Reason: typo
01-16-2010, 10:49 PM   #18
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Me and my typos. i meant pentax DA L 55-300mm
01-16-2010, 11:46 PM   #19
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That 55-300mm looks much worse than what I have seen - does the L version of less QC or something? May be off focused..?

01-17-2010, 01:47 AM   #20
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DA L 55-300 vs Sgma 70- 300 DG APO M

I have both,sigma was a gift,it seems sharper,in hard sort of way than the DA,hope my sister does'nt see this, but I like the DA
01-17-2010, 01:59 AM   #21
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Look I am no birder...

And I apologize to those who really are...

But I used the 55-300 on a bike ride with the little ones yesterday. These are handheld... but they are not too bad IMO.

My tamron 70-300 would have pf all over these guys...





01-17-2010, 02:07 AM   #22
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Nice shots! I especially liked the last one.
01-17-2010, 09:07 AM   #23
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I am not sure. The performance IMO is similar. the differnce I believe is in the White Balance.

The Pentax, a new lens, is light weight. If light is optimum both are good. Slight focus problems notwithstanding.

The pentax is good. Not great though.

01-17-2010, 12:38 PM   #24
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That's what I was trying to say,and couldnt find the words,To me ,it seems as if the sigma has
sacrificed's saturation somewhat for sharpness, were with the DA there is a good balance.
01-17-2010, 12:42 PM   #25
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There are many threads on this forum comparing the 55-300mm to the Sigma and Tamron 70-300mm and the vast majority indicate Pentax has the CA ressitance of the Sigma while exceeding Tamron sharpness.

Maybe sample variation, as some test sites had less than sharp 55-300mm's too.
01-17-2010, 05:20 PM   #26
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QuoteOriginally posted by ariban Quote
here are two images.

the first is with a sigma 70-300mm (possibly non APO - as i picked it up 2nd hand)

the second one is using a pentax DA L 55-300mm.

Under proper light, there seems to be little to chose. The sigma is heavier, so I find it easier to use.
could you do further testing?
01-17-2010, 05:32 PM   #27
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If there are any doubters of how good the Pentax is, browse through the plethora of threads posting images from this fine consumer telezoom.

e.g.:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/27085-da-55-300-mini-review.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/35644-da-55-30...5-6-di-ld.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/56959-pentax-d...h-$300-no.html
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/26845-da-55-30...y-joy-joy.html

Reviewers have consistently praised the Pentax for performing in all areas better than the Tamron and Sigma varieties.

So is it worth twice the price? That depends if your images are worth anything to you...
01-19-2010, 01:59 AM   #28
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QuoteOriginally posted by Pentaxor Quote
could you do further testing?
Will try.

I will get back with the findings
01-19-2010, 03:09 AM   #29
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I have both of these Lenses

The APO version of the Sigma 70-300 is by no means a bad lens. The center is pretty sharp at 300mm even if the edges are a bit soft. Colors and contrast are good and the macro feature is fun and useful. And the build feels sturdy. So it's a decent choice anyway and especially so if money is an issue. I was not disappointed with this lens, have no reason to get rid of it because it's my backup, and would never feel embarassed to be seen using it.

But the Pentax 55-300 is a better lens, it does produce sharper images and despite a few quibbles is the lens I use most often. (I shoot a lot of action and street type shots around a skydiving drop zone) And even though the extra range at the wide end is not great, I use it a great deal. My quibbles? - It feels a bit flimsy (the Sigma feels more solid to me) but in fairness the Pentax has taken a few good jolts and is none-the-worse. And the lens goes into focus hunt mode at in-opportune moments for no consistently apparent reason. (not excessively often but very annoying when it does).

Whether the Pentax is worth the price difference is entirely up to you, your wallet, how much of a premium you place on your telephoto images and how much quality you demand. You'll find when the utmost quality is critical, small incremental improvements can come with steep prices. The difference between this Pentax and this Sigma was worth it to me (and apparently many others). But while I can appreciate the quality improvement of say the Sigma 100-300 over my Pentax 55-300, the improvement is not one I need ATT and I'm not ready the fork out double the price of my 55-300 for it. (But if/when Pentax makes a 55-300 WR I'll probably scoop one up in a heart beat)
07-22-2010, 09:55 PM   #30
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I have only Sigma 70-300 and it has it's disadvantages, but I couldn't afford better at the time, but I'm very happy about it's macro ability, if the Pentax would be macro I would appreciate to be able to go down to 55mm.

http://farm5.static.flickr.com/4139/4803857985_745717d4b0_z.jpg

I just couldn't use a href or img src html tags, don't know how it works around here.

Last edited by eweliyi; 07-22-2010 at 10:05 PM.
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